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SEER Inquiry System - Report
Produced: 10/20/2025 9:10 AM
Question 20250003
Inquiry Details
References:
2021 ICD-O-3.2 Update
Question:
Solid Tumor Rules/Histology--Fallopian Tube: How is histology coded for a high-grade serous carcinoma with admixed yolk sac tumor of the right fallopian tube? See Discussion.
Discussion:
There was a single right fallopian tube tumor with two distinct morphologies. The diagnosis comment states, “The combined morphologic and immunohistochemical features are best classified as primary fallopian tube high grade serous carcinoma with a somatically derived yolk sac tumor.”
Answer:
Assign high-grade serous carcinoma of the fallopian tube (8461/3). There is currently no code to capture this rare mixed histology. Yolk sac tumors rarely occur in the fallopian tubes of postmenopausal patients and are associated with poor outcome. It is important to document the findings in the appropriate text field.
Cancer Site Category:
N/A
Data Item Category:
Histology
Other Category:
Solid Tumor Rules (2018, 2021)
Year:
2025
