Mucinous tubular and spindle cell carcinoma of the kidney.

摘要

Mucinous tubular and spindle cell carcinoma (MTSC) was initially recognized as a distinctive subset of low grade collecting duct carcinomas in 1997, and it was incorporated in the 2004 WHO classification of renal neoplasms under its current name. Although MTSC was regarded as rare, more than 80 cases have been reported. The exact cell of origin is a matter of debate but accumulated evidence suggests that it originates from cells of the loop of Henle or from collecting duct epithelium, with more support for the latter site.