# A collision tumor of basal cell carcinoma and atypical fibroxanthoma: A case report

## TL;DR

This paper reports a rare case of a skin tumor combining two distinct cancer types in an elderly man.

## Contribution

The novelty lies in documenting a collision tumor of basal cell carcinoma and atypical fibroxanthoma.

## Key findings

- A collision tumor involving basal cell carcinoma and atypical fibroxanthoma was diagnosed in a patient.
- The case highlights the rare coexistence of two distinct skin tumor types in one lesion.

## Abstract

An 83‐year‐old man presented an elevated skin lesion in the left temporal area. The resected specimen was identified between a basal cell carcinoma and an atypical fibroxanthoma. A final diagnosis of basal cell carcinoma and atypical fibroxanthoma was made. This study reports a rare case of a cutaneous collision.