SEER Inquiry System - Question 20091088 Details

System Guide

Back to Search Results

SEER Inquiry System - Report

Produced: 07/08/2025 12:10 AM

Question 20091088

Export CSV Export PDF Print

Add to Report

Inquiry Details

References:

WHO Class Breast Tumors, 40. 2003

Question:

MP/H Rules/Histology--Breast: How is histology coded for a diagnosis of "metaplastic carcinoma with the sarcomatous component of high grade sarcoma with focal areas of osteoid formation"? See Discussion.

Discussion:

Right breast simple mastectomy, path: 2.5 x 1.5 x 1.5 cm metaplastic carcinoma with; the sarcomatous component is high grade sarcoma with focal areas of osteoid formation. The epithelial component is predominantly grade 2 DCIS.

Answer:

For cases diagnosed 2007 or later, assign code 8575 [Metaplastic carcinoma, NOS]. Metaplastic carcinomas often include mixtures of epithelial carcinoma with sarcoma, for example.

Cancer Site Category:

Breast

Data Item Category:

Histology

Other Category:

N/A

Year:

2009