SEER Inquiry System - Report
Produced: 10/14/2025 6:15 PM
Question 20021173
Inquiry Details
References:
ICD-O-3
Question:
Discussion:
Answer:
For tumors diagnosed prior to 2007:
Code the Histology field to 8070 [squamous cell carcinoma].
The review diagnosis was also squamous cell carcinoma. The expression "atypical papillary squamous epithelium" does not modify the cancer histology.
For tumors diagnosed 2007 or later, refer to the MP/H rules. If there are still questions about how this type of tumor should be coded, submit a new question to SINQ and include the difficulties you are encountering in applying the MP/H rules.