Merkel cell cancer staging
Merkel cell cancer Microchapters |
Diagnosis |
---|
Treatment |
Case Studies |
Merkel cell cancer staging On the Web |
American Roentgen Ray Society Images of Merkel cell cancer staging |
Risk calculators and risk factors for Merkel cell cancer staging |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Ahmad Al Maradni, M.D. [2]
Overview
The staging of Merkel cell cancer is based on the TNM staging system.
Staging
- According to the TNM staging system, merkel cell cancer is classified into 4 stages based on the following:
- Tumor size
- Involvement of lymph nodes, and
- Metastasis
- The stages of Merkel cell carcinoma are shown in the table below:
Stage | Primary Tumor (T) | Lymph Node (N) | Metastasis (M) |
0 | In situ |
|
|
IA | ≤2 cm |
|
|
IB | ≤2 cm |
|
|
IIA | >2 cm |
|
|
IIB | >2 cm |
|
|
IIC | Invades bone, muscle and cartilage |
|
|
IIIA | Any size tumor (includes invading tumors) |
|
|
IIIB | Any size tumor (includes invading tumors) | Postive for:
|
|
IV | Any size tumor (includes invading tumors) |
|
|