SEER Inquiry System - View
Source 1: WHO Class Endocrine Tumors
Histology--Thyroid: What is the histology code for: poorly differentiated thyroid carcinoma with rhabdoid phenotype arising in a papillary carcinoma?
Code as papillary carcinoma, poorly differentiated, 8260/33. The WHO classification lists grade III papillary carcinoma as one of the synonyms for poorly differentiated thyroid carcinoma.
"Rhabdoid phenotype" does not affect the histology code.