# Mucinous tubular and spindle renal cell carcinoma revealed by a trauma of the kidney: a case report

## TL;DR

A rare kidney tumor called mucinous tubular and spindle cell carcinoma was found in a patient who had severe kidney trauma.

## Contribution

This case report adds to the limited literature on mucinous tubular and spindle renal cell carcinoma, highlighting its clinicopathologic features.

## Key findings

- The tumor was identified in a 52-year-old male patient following kidney trauma.
- The tumor exhibits a histological spectrum from low to high grade, including sarcomatoid differentiation.

## Abstract

Mucinous tubular and spindle cell carcinoma is a rare renal tumor. It has been recognized as a distinct entity in the 2004 World Health Organization tumor classification. Since then, several dozen of these tumor have been reported with additional complementary morphologic characteristics, immunohistochemical profile, and molecular genetic features that have further clarified its clinicopathologic aspects.

We report the case of a 52-year-old male African patient who was found to have a mucinous tubular and spindle renal cell carcinoma on a nephrectomy specimen for a severe kidney trauma.

This tumor has a histological spectrum ranging from low to high grade, which includes sarcomatoid differentiation that can confer the tumor an aggressive clinical course.