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Produced: 09/17/2026 11:29 AM
Question 20220037
Inquiry Details
References:
Subject matter expert
Question:
Histology--Brain and CNS: What is the histology code of a primary papillary epithelial tumor of the sella (PPETS)? See Discussion.
Discussion:
The pathology report states this is a rare entity described in case reports and not incorporated into the WHO classification of tumors. A subsequent endocrinology note stated “papillary tumor, benign by path; tumor was not an adenoma; based on one Mayo study, the recurrence risk is low.”
Answer:
Assign code 8000/0. This is an emerging histology and not yet recognized by the World Health Organization. Document the details in text fields. It might also be useful to document this SINQ question in text.
Cancer Site Category:
Brain and CNS
Data Item Category:
Histology
Other Category:
N/A
Year:
2022
