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SEER Inquiry System - Report
Produced: 03/11/2025 7:22 AM
Question 20240048
Inquiry Details
References:
#1: ICD-O-3.2
#2: Solid Tumor Rules. Breast, 2024 Update
Question:
Solid Tumor Rules/Histology--Breast: What is histology code of a breast tumor with ductal carcinoma, lymphoepithelioma-like carcinoma type? See Discussion.
Discussion:
Example: 12/2023 Breast lumpectomy final diagnosis is Invasive ductal carcinoma, lymphoepithelioma-like carcinoma type. This is a single tumor with no in situ carcinoma present.
Lymphoepithelioma-like carcinoma is not listed as a subtype/variant or synonym for breast carcinoma in the Solid Tumor Rules histology tables.
Answer:
Lymphoepithelial carcinoma is a subtype of SCC usually seen in skin or H&N sites and often associated with EBV. CPC SME review determined 8082/3 invalid for breast but did not recommend a substitute code. There were only 45 cases coded 8082 2001 to 2019. For this case, it's possible the lesion originated in the breast skin and progressed to breast tissue. SCC is a subtype of metaplastic breast carcinoma so one could argue it code be coded either 8575 or 8070. For this case, we recommend assigning 8500/3. Use text fields to record the details.
