Melanocytic nevus staging
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Melanocytic nevus Microchapters |
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Diagnosis |
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Case Studies |
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Melanocytic nevus staging On the Web |
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American Roentgen Ray Society Images of Melanocytic nevus staging |
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Risk calculators and risk factors for Melanocytic nevus staging |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Qurrat-ul-ain Abid, M.D.[2]
Overview
Staging
| Mucinous cystadenocarcinoma TNM staging | |
|---|---|
| Stage | Description |
| Tumor Grading (T) | |
| TX | Primary tumor cannot be assessed |
| T0 | No evidence of primary tumor |
| Tis | Carcinoma in situ: intraepithelial or invasion of lamina propria |
| T1 | Tumor invades submucosa |
| T2 | Tumor invades muscularis propria |
| T3 | Tumor invades through the muscularis propria into the pericolorectal tissues |
| T4a | Tumor penetrates to the surface of the visceral peritoneum |
| T4b | Tumor directly invades or is adherent to other organs or structures |
| Regional Lymph Nodes (N) | |
| NX | Regional lymph node cannot be assessed |
| N0 | No regional lymph node metastasis |
| N1 | Regional lymph node metastasis |
| N1a | Metastasis in 1 regional lymph node |
| N1b | Metastasis in 2-3 regional lymph nodes |
| N1c | Tumor deposit(s) in the subserosa, mesentery, or nonperitonealized pericolic or perirectal tissues without regional nodal metastasis |
| N2 | Metastasis in 4 or more lymph nodes |
| N2a | Metastasis in 4-6 regional lymph nodes |
| N2b | Metastasis in 7 or more regional lymph nodes |
| Distant Metastasis (M) | |
| M0 | No distant metastasis |
| M1 | Distant metastasis |
| M1a | Metastasis confined to 1 organ or site (eg, liver, lung, ovary, nonregional node) |
| M1b | Metastases in more than 1 organ/site or the peritoneum |