Pathologic Staging (pTNM)

CAP Approved  Skin • Squamous Cell Carcinoma of the Skin 3.1.0.2

TNM Descriptors (required only if applicable) (select all that apply)

___ m (multiple primary tumors)

___ r (recurrent)

___ y (posttreatment)

Primary Tumor (pT)

___ pTX:        Primary tumor cannot be assessed

___ pT0:        No evidence of primary tumor

___ pTis:        Carcinoma in situ

___ pT1:        Tumor 2 cm or less in greatest dimension with fewer than two high-

risk features*

___ pT2:        Tumor greater than 2 cm in greatest dimension with or without one

additional high-risk feature, or any size with two or more high-risk

features

___ pT3:        Tumor with invasion of maxilla, mandible, orbit, or temporal bone 

___ pT4:        Tumor with invasion of skeleton (axial or appendicular) or perineural invasion

of skull base

* From the 7th edition AJCC Staging Manual: High risk features include poorly differentiated histologic grade, >2 mm Breslow depth, Clark anatomic level ≥ IV, perineural invasion and ear or hair-bearing lip tumor site.

Regional Lymph Nodes (pN)

___ pNX:        Regional lymph nodes cannot be assessed

___ pN0:        No regional lymph node metastasis

___ pN1:         Metastasis in a single ipsilateral lymph node, 3 cm or less in greatest

dimension

___ pN2:         Metastasis in a single ipsilateral lymph node, more than 3 cm but not

more than 6 cm in greatest dimension; or in multiple ipsilateral lymph

nodes, none more than 6 cm in greatest dimension; or in bilateral or

contralateral lymph nodes, none more than 6 cm in greatest dimension

___ pN2a:         Metastasis in a single ipsilateral lymph node, more than 3 cm but not

more than 6 cm in greatest dimension

___ pN2b:         Metastasis in multiple ipsilateral lymph nodes, none more than 6 cm in

greatest dimension

___ pN2c:         Metastasis in bilateral or contralateral lymph nodes, none more than 6

cm in greatest dimension.

___ pN3:         Metastasis in a lymph node, more than 6 cm in greatest dimension

Distant Metastasis (pM)

___ Not applicable

___ pM1: Distant metastasis (documented in this specimen)

Skin

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