Roman Numeral Staging, I-IV and Recurrent Cancers
(also called Stage Grouping)
Staging depends on cancer cell type. Specific cell types may use des-ignations such as A-D for prostate or colon, rather than I-IV.
I Small localized cancers, usually curable
II Locally advanced and/or involvement of lymph nodes
III Locally advanced and/or involvement of lymph nodes
IV Inoperable or metastatic
Recurrent After all visible tumor eradicated
Locally
recurrent In area of primary tumor
Distant
recurrent Metastases (interchangeable with stage IV)
Subcategories of stage groupings are delineated by capital letters (e.g., IIB, IIIC). When using stage grouping, if the combination of tumor-node-metastasis elements is not in the stage grouping table, the case should be considered unstageable, or categorized as stage group
99.
Solid Tumor Staging
Tumor-Node-Metastasis (TNM) Category (also called American Joint Committee [AJC]), American Joint Committee on Cancer [AJCC] and l'Union Internationale Contre le Cancer [UICC]). Staging is not relevant for occult carcinoma, which is designated TX N0 M0.
TNM Staging
T Primary tumor, size, and invasiveness
TX Primary tumor cannot be assessed.
T0 No evidence of primary tumor
Tis Carcinoma in situ (carcinomas represent the only type of cancer that can be classified
as being 'in situ,' because only carcinomas have a basement membrane. Thus,
sarcomas are never described as being in situ.)
T1-T4 Presence of tumors. Higher numbers indicate increased size, extent, or degree of
penetration. Each cancer type has specifics to classify under the number.
N Regional lymph nodes, presence or absence. Variable value
NX Regional lymph nodes cannot be assessed.
N0 No regional lymph node metastasis
N1-N3 Regional lymph node metastasis. Higher numbers indicate greater involvement.
M Distant metastasis, presence or absence of distant metastasis, including lymph
nodes that are not regional
MX Distant metastasis cannot be assessed.
M0 No distant metastasis
M1 Distant metastasis
Clinical and Pathologic Staging
a Autopsy
c Clinical
p Pathologic
r Recurrent
y During or after multimodality treatment
Other Descriptors
GX, G1-G4 Histopathologic grade
LX, L0, L1 Lymphatic vessel invasion
RX, RO-R2 Residual tumor
SX, SO-S2 Scleral invasion, serum markers
VX, V0-V2 Venous invasion
Roman Numeral/TNM Subsets (type-specific, examples only)
Lung Cancer
Stage 0 Carcinoma in situ
Stage IA T1 N0 M0
Stage IB T2 N0 M0
Stage IIA T1 N1 M0
Stage IIB T2 N1 M0; T3 N0 M0
Stage IIIA T3 N1 M0; T1 N2 M0; T2 N2 M0; T3 N2 M0
Stage IIIB T4 N0 M0; T4 N1 M0; T4 N2 M0; T1 N3 M0; T2 N3
M0; T3 N3 M0; T4 N3 M0
Stage IV Any T, Any N, M1
Adapted from Vaporciyan AA, Nesbitt JC, Lee JS, et al. Cancer of the Lung. In: Bast RC, Kule DW, Poliock RE, et al., eds. Cancer Medicine, 5th ed. Hamilton: BC Decker Inc; 2000:1227-1292.
Specific Cancers, Staging And Classification
Breast Tumors Clinical Classification (TNM)
TX Primary tumor cannot be assessed.
TO No evidence of primary tumor found.
Tis Carcinoma in situ: intraductal carcinoma, or lobular carcinoma in situ, or
Paget disease of the nipple with-no tumor (Note: Paget disease associated
with a tumor is classified according to the size of the tumor.)
T1 Tumor < 2 cm in greatest dimension
T1a <0.5 cm in greatest dimension
T1b 0.5 cm but <1 cm in greatest dimension
T1c >1 cm but not >2 cm in greatest dimension
T2 Tumor >2 cm but not >5 cm in greatest dimension
T3 Tumor >5 cm in greatest dimension
T4 Tumor of any size with direct extension to chest wall or skin
T4a Extension to chest wall
T4b Edema (including peau d'orange), or ulceration of the skin of the breast or satellite
skin nodules confined to the same breast
T4c Findings of both 4a and 4b
T4d Inflammatory carcinoma
Note: Chest wall includes ribs, intercostal muscles, and serratus anterior muscle, but not pectoral muscle. Inflammatory carcinoma of the breast is characterized by diffuse, brawny induration of the skin with an erysipeloid edge, usually with no underlying palpable mass. If the result of skin biopsy is negative and no localized measurable primary cancer is found, the T category is pTX when pathologically staging a clinical inflammatory carcinoma (e.g., T4d). Dimpling of the skin, nipple retraction, or other skin changes, except those con-sidered as T4b and 4d, may occur in T1, T2, or T3 cases without affecting the classification.
NX Regional lymph nodes cannot be assessed.
N0 No regional lymph node metastasis
N1 Metastasis to movable ipsilateral axillary node(s)
N2 Metastasis to ipsilateral axillary node(s) fixed to one another or to
other structures
N3 Metastasis to ipsilateral internal mammary lymph node(s)
MX Presence of distant metastasis cannot be assessed.
M0 No distant metastases are found.
M1 Distant metastases are present.
Breast Cancer Staging
Stage 0 Carcinoma in situ of the breast (ductal carcinoma in situ [DCIS]
lobular carcinoma in situ [LCIS])
Stage I T1, N0, M0 <2 cm in diameter, does not touch the skin, does not touch the
muscles, and has not invaded the lymph nodes anywhere.
Stage II >2 cm in diameter but <5 cm in diameter, does not
touch the skin, and does not touch the muscles. or Any size <5 cm but has spread to
the lymph nodes in the axilla
Stage IIa T0-1, N1, M0; T2, N0, M0
Stage IIb T2, N1, M0; T3, N0, M0
Stage III >5 cm in diameter
and/or
Spread to lymph nodes fixed to one another, or to the surrounding tissue (e.g., skin,
muscle, blood vessels)
or
Breast cancers of any diameter that involve skin, the ribs of the chest wall, or the
internal mammary lymph nodes beneath the middle part of the ribs No spread to
other organs No spread to bones away from the chest area No spread to lymph
nodes far from the breast
Stage IIIa T0-2, N2, M0, or T3, N1-2, M0
Stage IIIb T4, N (any), M0; T(any), N3, M0
Stage IV T(any), N(any), M1 Any size tumor, metastasized to organs or lymph nodes
away from the breast
Pathologic Staging (pTN) Breast Tumor
pT Primary tumor (correspond to the T categories) Primary carcinoma
No gross tumor at the margins of resection
Tumor size is a measurement of the invasive compo-nent. Example: A
large in situ component of 4 cm and a small invasive component of 0.5 cm = pTl a.
PN Regional lymph nodes (correspond to P categories) Breast tumor
Resection and examination of at least the low axillary lymph resection ordinarily
includes six or more lymph nodes.
pNX Regional lymph nodes cannot be assessed (not removed for study or
previously removed).
pNO No regional lymph node metastasis
pNI Metastasis to movable ipsilateral axillary node(s)
pN1 a Only micrometastasis (none >0.2 cm)
pN1b Metastasis to lymph node(s), any >0.2 cm
pN1bi Metastasis to one to three lymph nodes, any >0.2 cm and all <2.0 cm
in greatest dimension
pN1bii Metastasis to four or more lymph nodes, any >0.2 cm and all <2.0 cm
in greatest dimension
pN1biii Extension of tumor beyond the capsule of a lymph node metastasis <2.0 cm
in greatest dimension
pN1biv Metastasis to a lymph node £2.0 cm in greatest dimension
pN2 Metastasis to ipsilateral axillary lymph nodes fixed to one another or
other structures
pN3 Metastasis to ipsilateral internal mammary lymph node(s)
Scarff-Bloom-Richardson (SBR) Grading System, Breast Tumor
(also known as: (BR) Bloom-Richardson [BR] grading system, Modified BR, Elston-Ellis modification of BR grading system). BR grading scheme is a semi-quantitative grading method for invasive (no special type) breast cancers, based on three morphologic features: degree of tumor tubule formation tumor mitotic activity, and nuclear pleomorphism of tumor cells (nuclear grade). Seven possible scores are condensed into three BR grades. The three grades then translate into:
Bloom-Richardson Differentiation/BR Grade
Combined scores
3, 4, 5 Well-differentiated (BR low grade)
6,7 Moderately differentiated (BR intermediate grade)
8,9 Poorly differentiated (BR high grade)
Melanoma
Melanoma Stage Information
The microstage of malignant melanoma is determined on result of his-tologic examination by the vertical thickness of the lesion in millime-ters (Breslow classification) and/or the anatomic level of local inva-sion (Clark classification). The Breslow thickness is more repro-ducible and more accurately predicts subsequent behavior of malig-nant melanoma in lesions >1.5 mm in thickness and should always be reported. Accurate microstaging of the primary tumor requires careful histologic evaluation of the entire specimen by an experienced pathol-ogist. Estimates of prognosis should be modified by sex and anatomic site as well as by clinical and histologic evaluation.
Clark Level of Invasion
Histologic classification is based on resection of entire lesion.
Restrictions: Does not take nodal involvement into consideration; deals only with primary tumor. Uniformity of staging not always reproducible because of variations in the depth of layers of the skin. Cannot be applied accurately to melanomas affecting the palms and soles. Histologic difference exists between growth patterns of superfi-cial spreading and nodular malignant melanomas.
Level I Confined to epidermis (in situ); never metastasizes; 100% cure rate
Level II Invasion into papillary dermis; invasion past basement membrane (localized)
Level III Tumor filling papillary dermis (localized), and com-pressing the reticular dermis
Level IV Invasion of reticular dermis (localized)
Level V Invasion of subcutaneous tissue (regionalized by direct extension)
Breslow Depth of Invasion
Pathologic staging based on measurement of tumor invasion of dermis using the micrometer on the microscope; more reproducible than Clark levels.
Categories Actual measurement of depth of lesion is recorded
Cases are grouped for study as follows
0.75 mm Comparable with Clark level II
>0.75-1.5 mm Comparable with Clark level III
>1.5-4.0 mm Comparable with Clark level IV
>4.0 mm Comparable with Clark level V
Clinical Staging for Malignant Melanoma
Used for staging of melanomas that have spread beyond the primary tumor or do not have adequate tissue for pathologic examination
Clinical staging includes results of tests and examinations as well as pathologic findings. Clinical staging parallels summary staging
Stage I Localized, without metastases to distant or regional nodes (allows localized disease
<5 cm. from initial tumor within primary lymphatic drainage area
Stage II Regionalized, involvement of regional nodes
Stage III Disseminated, visceral, or lymphatic metastases or multiple cutaneous
or subsequent metastases
Reference to stage in melanoma cannot be assumed to be clinical, Clark, or Breslow unless specifically identified as such.
From Cancer staging module: melanoma staging schemes. SEER's Training Web Site. Available at http://training.seer.cancer.gov/mod-ule_staging_cancer/unit03_sec04_part05_melanoma.html. Accessed June 23, 2006.
TNM Staging of Melanoma
Primary tumor (T)
TX Primary tumor cannot be assessed (e.g., shave biopsy or regressed melanoma).
T0 No evidence of primary tumor
Tis Melanoma in situ
T1 Tumor £1.0 mm thick with or without ulceration
T1a Tumor £1.0 mm thick and Clark level II or III, no ulceration
T1b Tumor £1.0 mm thick and Clark level IV or V or with ulceration
T2 Tumor >1.0 mm but not >2.0 mm thick with or without ulceration
T2a Tumor >1.0 mm but not >2.0 mm thick, no ulceration
T2b Tumor >1.0 mm but not >2.0 mm thick, with ulceration
T3 Tumor >2.0 mm but not >4 mm thick with or without ulceration
T3a Tumor >2.0 mm but not >4 mm thick, no ulceration
T3b Tumor >2.0 mm thick, but not >4 mm, with ulceration
T4 Tumor >4.0 mm thick with or without ulceration
T4a Tumor >4.0 mm thick, no ulceration T4b Tumor >4.0 mm thick, with ulceration
Regional lymph nodes (N), Melanoma
NX Regional lymph nodes cannot be assessed.
N0 No regional lymph node metastasis
N1 Metastasis to 1 lymph node N1a Clinically occult (microscopic) metastasis
N1b Clinically apparent (macroscopic) metastasis
N2 Metastasis to 2 or 3 regional nodes or intralymphatic regional metastasis
without nodal metastases N2a Clinically occult (microscopic) metastasis
N2b Clinically apparent (macroscopic) metastasis N2c Satellite or in-transit metastasis
without nodal metastasis
N3 Metastasis in 4 or more regional nodes, or matted lymph nodes, or in-transit metastasis
or satellite(s) with metastatic regional node(s)
(Note: Micrometastases are diagnosed after elective or sentinel lym-phadenectomy; macrometastases are defined as clinically detectable lymph nodes metastases confirmed by therapeutic lymphadenectomy, or when any lymph node metastasis exhibits gross extracapsular extension.)
Distant Metastasis (M), Melanoma
MX Distant metastasis cannot be assessed.
M0 No distant metastasis
M1 Distant metastasis
M1a Metastasis to skin, subcutaneous tissues, or distant lymph nodes
M1b Metastasis to lung
M1c Metastasis to all other visceral sites or distant metastasis at any site associated with
elevated levels of serum lactic dehydrogenase
Clinical Staging, American Joint Committee on Cancer Stage Groupings, Melanoma
Clinical staging includes microstaging of the primary melanoma and clinical and/or radiologic evaluation for metastases. By convention, it should be assigned after complete excision of the primary melanoma with clinical assessment for regional and distant metastases.
Stage 0 Tis, N0, M0
Stage IA T1a, N0, M0
Stage IB T1b, N0, M0; T2a, N0, M0
Stage IIA T2b, N0, M0; T3a, N0, M0
Stage IIB T3b, N0, M0; T4a, N0, M0
Stage IIC T4b, N0, M0;
Stage III Any T, N1, M0; Any T, N2, M0; Any T, N3, M0
Stage IV Any T, any N, M1
Pathologic Staging, American Joint Committee on Cancer Stage Groupings
With the exception of patients with clinical stage 0 or stage IA lesions (who have a low risk of lymphatic involvement and do not require pathologic evaluation of their lymph nodes), pathologic staging includes microstaging of the primary melanoma and pathologic infor-mation about the regional lymph nodes after sentinel node biopsy and, if indicated, complete lymphadenectomy.
Stage 0 Tis, N0, M0
Stage IA T1a, N0, M0
Stage IB T1b, N0, M0; T2a, N0, M0
Stage IIA T2b, N0, M0; T3a, N0, M0
Stage IIB T3b, N0, M0;T4a, N0, M0
Stage IIC T4b, N0, M0
Stage IIIA T1-4a, N1a, M0; T1-4a, N2a, M0
Stage IIIB T1-4b, N1a, M0; T1-4b, N2a, M0; T1-4a, N1b, M0; T1-4a, N2b, M0;
T1-4a/b, N2c, M0;
Stage IIIC T1-4b, N1b, M0; T1-4b, N2b, M0; T1-4b, N2c, M0; Any T, N3, M0
Stage IV Any T, any N, M1
Adapted from Melanoma of the skin. In: American Joint Committee on Cancer, AJCC Cancer Staging Manual, 6th ed. New York, NY: Springer; 2002: 209-220.
System-Specific Cancer Classification, Gastrointestinal/Genitourinary
Colorectal Cancer Staging: Dukes Staging (also called: Astler-Coller, Turnbull, modified Astler-Coller [MAC]).
Originally staging for rectal cancer only; first Kirklin and then Astler and Coller added colon and rectal cancers; Turnbull included stage for unresectable tumors and distant metastases.
Dukes staging (the generic term) is based on pathologic examination and resection of the tumor; measures the depth of invasion through the mucosa and bowel wall. It does not take into account level of nodal involvement or the grade of the tumor.
Dukes: Stage A
Categories: Confined to mucosa
Stage: I
TNM Category: T1 or T2, N0 M0
Dukes: Stage B
Categories: Varies by system
Stage: II
TNM Category: T3 or T4, N0 M0
Dukes: Stage C
Categories: Positive lymph nodes
Stage: III
TNM Category: Any T, N1/N2, M0
Dukes: Stage D
Categories: Distant metastases
Stage: IV
TNM Category: Any T, Any N, M1 (Turnbull system only)
Modified from American Joint Committee on Cancer, AJCC Cancer Staging Manual, 5th ed. Philadelphia: Lippincott-Raven;1998.
Bladder Cancer Staging: Jewett Staging (also called Marshall, Jewett-Marshall Staging, and American Urologic System [AUS]).
Histologic staging based on depth of invasion through the bladder wall. It does not consider grade of tumor, local recurrence rate, or multicentricity of tumors. A deep resection is mandatory for this method.
Jewett Categories:
Stage A Submucosal invasion but no involvement of muscle
Stage B Bladder wall or muscle invasion
Stage B1 Superficial
Stage B2 Deep
Stage C Extension through serosa into perivesical fat (around bladder)
Stage D Lymph node and distant metastases
Stage D1 Regional nodes
Stage D2 Distant nodes and other distant metastases
AJCC Tumor notation T1 - T4 is equivalent to Jewett stages A through D, respectively
N (node) and M (metastases) are part of Jewett stage D.
Prostate Cancer Staging: American or American Urologic System: Staging has been translated to TNM extent of disease notation by the American Joint Committee.
Stage A Can be subdivided based on the number of cell clusters (foci)
seen on microscopic examination.
Stage B Difference between Stage A and Stage B is whether nodule(s) are
clinically palpable (or visibly seen) in prostate.
Stage C Dividing line between Stage B and Stage C is micro-scopically
evident capsular invasion.
Stage D Determinant is presence of metastatic disease identi-fied either
clinically or microscopically.
Gynecologic Cancers
International Federation of Gynecologists and Obstetricians (FIGO) Gynecologic Cancer Staging: Based on clinical data including exami-nation and colposcopy.
FIGO Stage Characteristics (cervical cancer)
Stage 0 Carcinoma in situ, intraepithelial carcinoma; cases of stage 0 should not be
included in any therapeutic sta-tistics for invasive carcinoma.
Stage I Carcinoma is strictly confined to the cervix (extension to the corpus
should be disregarded)
Stage IA Invasive cancer identified only microscopically. (All gross lesions, even
with superficial invasion, are con-sidered stage IB cancers). Invasion is limited to
mea-sured stromal invasion of £5 mm deep taken from the base of the epithelium,
either surface or glandular, from which it originates. Vascular space involvement,
either venous or lymphatic, should not alter the staging).
Stage IA1 Measured invasion of stroma £3 mm deep and £7 mm wide
Stage IA2 Measured invasion of stroma >3 mm and £5 mm deep and £7 mm wide
Stage IB Clinical lesions confined to the cervix or preclinical lesions >IA Stage IB1
Clinical lesions £4 cm in size
Stage IB2 Clinical lesions >4 cm in size
Stage II Carcinoma extends beyond the cervix but has not extended onto pelvic wall;
carcinoma involves the vagina, but not as far as the lowest third
Stage IIA No obvious parametrial involvement
Stage IIB With parametrial involvement
Stage III Carcinoma has extended onto the pelvic wall; on rectal examination no space
between the tumor and the pelvic wall is free from cancerous involvement;
tumor involves the lowest third of vagina; all cases involving hydronephrosis
or a nonfunctioning kidney should be included, unless such findings are
known to be due to other causes
Stage IIIA No extension onto the pelvic wall, but involvement of the lowest
third of the vagina
Stage IIIB Extension onto the pelvic wall or hydronephrosis or nonfunctioning
kidney
Stage IV Carcinoma has extended beyond the true pelvis or has clinically
involved the mucosa of the bladder or rectum
Stage IVA Spread of the growth to adjacent organs
Stage IVB Spread to distant organs
Histopathologic grades (G), unless otherwise detailed
Gx Grade cannot be assessed
Gl Well-differentiated
G2 Moderately differentiated
G3 Poorly differentiated or undifferentiated
Adapted from Benedet JL, Bender H, Jones H 3rd, Ngan HY, Pecorelli S. FIGO staging classifications and clinical practice guide-lines in the management of gynecologic cancers. FIGO Committee on Gynecologic Oncology. Int J Gynaecol Obstet. 2000 Aug;70(2):207-312.
Lymph/Blood Cancers Classifications And Categories
Lymphomas: Hodgkin and Non-Hodgkin Lymphoma
Ann Arbor Classification (originally proposed for Hodgkin, but now also used for Non-Hodgkin Lymphoma)
Stage I Involvement of a single lymph node region
Stage IE A single extralymphatic organ or site
Stage II Involvement of two or more lymph node regions on same side of
diaphragm
Stage II3 Number of lymph node regions involved may be indi-cated by a subscript.
Stage IIE Localized involvement of extralymphatic organ or site and of one or more
lymph node regions on the same side of the diaphragm
Stage III Involvement of lymph node regions on both sides of diaphragm
Stage IIIE Localized involvement of extralymphatic organ or site
Stage IIIS Involvement of spleen Stage IIISE Both stage IIIE and IIIS. Also
written Stage III+SE
Stage IV Diffuse or disseminated multifocal involvement of one or more extralymphatic
organs or tissues with or with-out associated lymph node enlargement.
or
Isolated extralymphatic organ involvement with distant (nonregional)
nodal involvement.
Stage IVE Used when extranodal lymphoid malignancies arise in tissues separate
from, but near, the major lymphatic aggregates
Extralymphatic sites of involvement use letter code and plus sign (+).
N nodes
H liver
L lung
M bone marrow
S spleen
P pleura
O bone
D skin
Lymphoma and Non-Hodgkin Lymphoma Categories
A Without well-defined generalized symptoms
B With well-defined generalized symptoms: unexplained loss of >10% of body
weight in the 6 months before diagnosis; unexplained fever with temperatures
exceeding 38°C; and drenching night sweats
Revised European American Lymphoma (REAL) Classification System
REAL Hodgkin Lymphoma Categories
Excellent prognosis: Average 5-year survival rate of 70%
Good prognosis Average: 5-year survival rate of 50-70%
Fair prognosis Average: 5-year survival rate of 30-49%
Poor prognosis Average: 5-year survival rate of <30%
Hodgkin Lymphoma (Hodgkin Disease) Classification
Nodular lymphocyte-predominant Hodgkin lymphoma
Classical Hodgkin lymphoma: nodular sclerosis, mixed cellularity,
and lymphocyte depletion
B-Cell Neoplasm Classification
Precursor B-cell lymphoblastic leukemia/lymphoma
Mature B-cell neoplasms
B-cell chronic lymphocytic leukemia/small lymphocytic lymphoma
B-cell prolymphocytic leukemia Lymphoplasmacytic lymphoma
Mantle cell lymphoma
Follicular lymphoma
Cutaneous follicle center lymphoma
Marginal zone B-cell lymphoma (MALT type, nodal, and splenic type)
Hairy cell leukemia
Diffuse large B-cell lymphoma
Burkitt lymphoma
Plasmacytoma and plasma cell myeloma
T-Cell Neoplasm Classification
Precursor T-cell lymphoblastic lymphoma
Mature T-cell and natural killer-cell neoplasms
T-cell prolymphocytic leukemia
T-cell large granular lymphocytic leukemia
Aggressive natural killer-cell leukemia
Mycosis fungoides and Sezary syndrome
Angioimmunoblastic T-cell lymphoma
Peripheral T-cell lymphomas
Adult T-cell leukemia/lymphoma
Anaplastic large cell lymphoma
Primary cutaneous CD30+ T-cell lymphoproliferative disorders
Subcutaneous panniculitislike T-cell lymphoma
Entropathy-type intestinal T-cell lymphoma
HepatospIenic T-cell lymphoma
Note: The REAL lymphoma classification system relies on immunophenotypic markers and on unusual proteins secreted by can-cerous white blood cells. The REAL system includes NHL and other hematologic cancers that share these markers: Hodgkin lymphomas, plasma cell myeloma, and chronic lymphocytic leukemia.
Working Formulation System Categories (Lymphoma)
High grade grows very quickly and causes serious symptoms.
Intermediate grows more rapidly than low grade and causes serious symptoms.
Low grade grows more slowly and produces fewer symptoms.
Leukemia Classification
French-American-British (FAB) Categories: Cell classification by types and subtypes, also sometimes referred to as Bennett system
Acute lymphocytic leukemia (diagnosed primarily in children), three subtypes
Acute myelogenous leukemia (the most common type of leukemia, diagnosed in both children and adults), eight subtypes
Chronic myelogenous leukemia (diagnosed primarily in adults)
Chronic lymphocytic leukemia (diagnosed primarily in adults) uses different classification system
Acute Lymphocytic Leukemia (ALL), Primarily Pediatric Patients (also called Acute Lymphoblastic Leukemia
L1 Mature-appearing lymphoblasts (T cells or pre-B cells), small with uniform genetic
material, regular nuclear shape, nonvisible, little cytoplasm.
L2 Immature and pleomorphic lymphoblasts (T cells or pre-B cells, large and variable in size,
variable genetic material, irregular nuclear shape, one or more large nucleoli,
and variable cytoplasm.
L3 Lymphoblasts (B cells; Burkitt cells) large and uniform, genetic material finely stippled
and uniform, nuclear shape is regular (oval to round), one or more prominent nucleoli,
cytoplasm is moderately abundant.
T-cell type: Thymus is involved. May lead to superior vena cava syndrome)
Acute Myelogenous Leukemia (AML), Pediatric and Adult Patients (also called acute nonlymphocytic Leukemia or ANL)
M0 Undifferentiated acute myelogenous leukemia. Bone marrow cells show no
significant signs of differentia-tion (allow maturation to obtain
distinguishing cell characteristics).
M1 Myeloblastic leukemia with/without minimal cell mat-uration. Bone marrow
cells show some signs of granu-locytic differentiation.
M2 Myeloblastic leukemia with cell maturation. Maturation of bone marrow
cells is at or beyond the promyelocyte (early granulocyte) stage; varying
amounts of maturing granulocytes may be seen; often associated with a
specific genetic change involving translocation of chromo-somes 8 and 21.
M3, M3 variant
[M3V] Myelocytic leukemia. Most cells are abnormal early granulocytes, between myeloblasts and myelocytes in stage of development; contain many small particles.
The cell nucleus may vary in size and shape. Bleeding and blood clotting problems
(e.g., disseminated intravascular coagulation, are commonly seen with this form of
leukemia. Good responses have been observed after treatment with retinoids.
M4E, M4 variant
with eosinophilia
[M4E]) Monocytic leukemia. Bone marrow and circulating blood have variable amounts
of differentiated granulo-cytes and monocytes. The proportion of monocytes and
promonocytes in bone marrow is >20% of all nucleat-ed cells. The M4E variant
also contains abnormal eosinophils in bone marrow.
M5 Monocytic leukemia (two forms). First characterized by poorly differentiated
monoblasts with lacy-appear-ing genetic material; second, differentiated form
char-acterized by a large population of monoblasts, promonocytes, and monocytes;
proportion of mono-cytes in the bloodstream
may be higher than in the bone marrow. M5 leukemia may infiltrate skin and gums;
prognosis in such patients worse.
M6 Erythroleukemia characterized by abnormal erythro-cyte-forming cells,
which comprise over half of the nucleated cells in the bone marrow.
M7 Megakaryoblastic leukemia Blast cells look like immature megakaryocytes or
lymphoblasts; may be distinguished by extensive fibrous tissue deposits
(fibrosis) in the bone marrow.
In addition, patients sometimes develop isolated tumors of the myeloblasts, such as isolated granulocytic sarcoma, or chloroma. Patients with chloroma frequently develop AML.
Chronic Myelogenous Leukemia (CML), Primarily Adult Patients
Chronic >5% blast cells and promyelocytes in blood and bone marrow; marked by
increasing overproduction of gran-ulocytes; generally only mild symptoms;
responds well to conventional treatment.
Accelerated >5% but <30% blast cells. Cells exhibit Philadelphia chromosome and other
chromosomal abnormalities; more abnormal cells are produced; patients with
noticeable symptoms (e.g., fever, poor appetite, weight loss) may not respond
as well to therapy.
Blast >30% blast cells in blood and bone marrow; blast cells frequently invade
other tissues and organs. The disease transforms into an aggressive, acute
leukemia (70% acute myelogenous leukemia, 30% acute lym-phocytic leukemia)
Chronic Lymphocytic Leukemia (CLL)
American Society of Anesthesiologists (ASA) Preoperative Assessment and Grading (also called Dripps-ASA, which reduced seven components to five).
ASA Grade Definition
I Normally healthy person
II Mild systemic disease that does not limit activity
III Severe systemic disease that limits activity but is not incapacitating
IV Incapacitating systemic disease that is constantly life-threatening
V Moribund, not expected to survive 24 hours with or without surgery
Eastern Cooperative Oncology Group (ECOG) Performance Status (also called Zubrod scale. See WHO Performance Scale.
Grade
0 Fully active, able to carry on all predisease activities
1 Restricted in physically strenuous activity but ambulatory and able to carry out work of
a light or sedentary nature (e.g., light house work, office work)
2 Ambulatory and capable of all self-care but unable to carry out any work activities. Up
and about >50% of waking hours
3 Capable of only limited self-care, confined to bed or chair >50% of waking hours
4 Completely disabled. Cannot carry on any self-care. Totally confined to bed or chair
5 Dead
Adapted from Owen MM, et al. Toxicity and response criteria of the Eastern Cooperative Oncology Group. Am J Clin Oncol. 1982;5:649-655.
World Health Organization (WHO) Performance Scale (also
called Zubrod scale; sometimes called ECOG).
Measures levels of patient capability. For example, an inpatient get-
ting metabolic studies done may be fully capable of performing nor-
mal activities but will remain in bed by personal choice. Such a
patient should be coded 0, "normal."
0 Normal activity
1 Symptoms, but nearly fully ambulatory
2 Some bed time, but needs to be in bed <50% of normal daytime
3 Needs to be in bed >50% of normal daytime 4 Unable to get out of bed
Karnofsky Performance Status Scale
Criteria Definition
100% Normal, no complaints; no evidence of disease
90% Able to carry on normal activity; minor signs or symp-toms of disease
80% Normal activity with effort; some signs or symptoms of disease; able to carry
on normal activity and to work
70% Cares for self; unable to carry on normal activity or to do active work
60% Requires occasional assistance, can care for most per-sonal needs
50% Requires considerable assistance and frequent medical care
40% Disabled; requires special care and assistance
30% Severely disabled; hospital admission is indicated although death not imminent
20% Very sick; hospital admission necessary; active supportive treatment necessary
10% Moribund; fatal processes progressing rapidly
0 Dead
Reference: Stedman's Medical Dictionary