# Basal Cell Carcinoma Arising Within a Bacillus Calmette–Guérin Vaccination Scar With Prolonged Inflammatory Response: Case Report

## TL;DR

A rare case of basal cell carcinoma developed within a BCG vaccination scar, highlighting a possible link between prolonged inflammation and skin cancer.

## Contribution

This case report presents a unique instance of basal cell carcinoma arising in a BCG vaccination scar.

## Key findings

- Basal cell carcinoma was found within a Bacillus Calmette–Guérin vaccination scar.
- Prolonged post-vaccination inflammation may be linked to skin cancer development.

## Abstract

Infiltrative basal cell carcinoma (iBCC) can rarely arise within scar tissue, as demonstrated by this unique case of BCC developing in a Bacille Calmette–Guérin (BCG) vaccination scar. This underscores the importance of monitoring prolonged post‐vaccination inflammation and exploring its potential link to skin cancer development.