# A Rare Case of Colonic Gastrointestinal Stromal Tumor

## TL;DR

This paper presents a rare case of a gastrointestinal stromal tumor in the colon of a 53-year-old man and discusses recent updates in risk stratification for such tumors.

## Contribution

The novelty lies in reporting a rare colonic GIST case and highlighting updated risk stratification for tumors in unusual locations.

## Key findings

- The tumor was identified in the colon, a rare site for GISTs.
- Recent risk stratification updates for GISTs in unusual locations were applied.
- Immunohistochemical markers were used to confirm the diagnosis.

## Abstract

Gastrointestinal stromal tumors (GISTs) are a type of mesenchymal tumor of the gastrointestinal tract that originate anywhere in the gastrointestinal tract, with the colon and appendix being the least recorded sites of occurrence. The following case report is that of a colonic GIST in a 53-year-old male and its histologic type. Included are notes on the recent additions and updates in the risk stratification of GISTs occurring in unusual sites with the relevant immunohistochemistry.