Basal cell carcinoma staging: Difference between revisions
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| '''T3'''|| | | '''T3'''||Tumor >4 cm in maximum dimension or minor bone erosion or perineural invasion or deep invasion | ||
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| '''T4'''|| | | '''T4'''||Tumor with gross cortical bone/marrow, skull base invasion and/or skull base foramen invasion | ||
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|'''T4b'''||Tumor with skull base invasion and/or skull base foramen involvement | |'''T4b'''||Tumor with skull base invasion and/or skull base foramen involvement | ||
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Revision as of 21:13, 18 February 2019
Basal cell carcinoma Microchapters |
Diagnosis |
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Case Studies |
Basal cell carcinoma staging On the Web |
American Roentgen Ray Society Images of Basal cell carcinoma staging |
Risk calculators and risk factors for Basal cell carcinoma staging |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Saarah T. Alkhairy, M.D.
Overview
The American Joint Committee on Cancer (AJCC) stages basal cell carcinoma based on the TNM system. T, M, and N are combined into stages, called stage grouping.
Basal Cell Carcinoma Staging
The American Joint Committee on Cancer (AJCC) stages basal cell carcinoma based on the TNM system:
T - tumor
N - lymph nodes
M - metastasis
The following table summarizes the T categories:
T Categories | Description |
Tis | Carcinoma in situ |
T1 | The tumor is blank 2 cm across AND has 0-1 high-risk features |
T2 | The tumor is > 2 cm across AND has > 2 high-risk features |
T3 | Tumor >4 cm in maximum dimension or minor bone erosion or perineural invasion or deep invasion |
T4 | Tumor with gross cortical bone/marrow, skull base invasion and/or skull base foramen invasion |
T4a | Tumor with gross cortical bone/marrow invasion |
T4b | Tumor with skull base invasion and/or skull base foramen involvement |
The following table summarizes the N categories:
N categories | Description |
N0 | The tumor has not spread to the lymph nodes |
N1 | The tumor has spread to 1 lymph node on the same side of the body as the main tumor AND is ≤ 3 cm across |
N2a | The tumor has spread to 1 lymph node on the same side of the body as the main tumor AND is > 3 cm and ≤ 6 cm across |
N2b | The tumor has spread to > 1 lymph node on the same side of the body as the main tumor AND is ≤ 6 cm across |
N2c | The tumor has spread to > 1 lymph node on the other side of the body as the main tumor AND is ≤ 6 cm across |
N3 | The tumor has spread to any nearby lymph node AND is > 6 cm across |
The following table summarizes the M categories:
M categories | Description |
M0 | The tumor has not spread to distant organs |
M1 | The tumor has spread to distant organs |
The T, N, and M categories are combined into stages. The following table summarizes the stage grouping.
Stage | TNM Grouping |
0 | Tis, N0, M0 |
I | T1, N0, M0 |
II | T2, N0, M0 |
III | T3, N0, M0; T1-T3, N1, M0 |
IV | T1-T3, N2, M0; Any T, N3, M0; T4, any N, M0; Any T, any N, M1 |