1. Rules for Classification
The definitions of the T, N, and M categories correspond to the FIGO stages. Both systems are included for comparison.
The classification applies to carcinomas and malignant mixed mesodermal tumours. There should be histological verification with subdivision by histological type and grading of the carcinomas. The diagnosis should be based on examination of specimens taken by endometrial biopsy.
The following are the procedures for assessing T, N, and M categories:
T categories. Physical examination and imaging including urography and cystoscopy
N categories. Physical examination and imaging including urography
M categories. Physical examination and imaging.
The FIGO stages are based on surgical staging. (TNM stages are based on clinical and/or pathological classification.)
2. Anatomical Subsites
1. Isthmus uteri (C54.0)2. Fundus uteri (C54.3)
3. Regional Lymph Nodes
The regional lymph nodes are the pelvic (hypogastric [obturator, internal iliac], common and external iliac, parametrial, and sacral) and the para-aortic nodes.4. TNM Clinical Classification
4.1. T - Primary Tumour
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4.2. N - Regional Lymph Nodes
NX. Regional lymph nodes cannot be assessed
N0. No regional lymph node metastasis
N1. Regional lymph node metastasis
4.3. M - Distant Metastasis
MX. Distant metastasis cannot be assessed
M0. No distant metastasis
M1. Distant metastasis
5. pTNM Pathological Classification
The pT, pN, and pM categories correspond to the T, N, and M categories.pN0. Histological examination of a pelvic lymphadenectomy specimen will ordinarily include 10 or more lymph nodes. If the lymph nodes are negative, but the number ordinarily examined is not met, classify as pN0.
6. G Histopathological Grading
For histopathological grading see: Creasman WT, Odicino F, Maisoneuve P, Beller U, Benedet JL, Heintz APM, Ngan HYS, Sideri M, Pecorelli S. FIGO Annual Report on the results of treatment in gynaecological cancer. Vol. 24. Carcinoma of the corpus uteri. J Epidemiol Biostat 2001;6:45-86.7. Stage Grouping
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8. Summary
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