# A Rare Case of Penile Cutaneous Horn With Underlying Well-Differentiated Squamous Cell Carcinoma: A Case Report

## TL;DR

This case report describes a rare instance of a penile cutaneous horn linked to squamous cell carcinoma in a 55-year-old man.

## Contribution

The novelty lies in the rare association of a penile cutaneous horn with an underlying well-differentiated squamous cell carcinoma.

## Key findings

- A penile cutaneous horn was found to be associated with a well-differentiated squamous cell carcinoma.
- Histopathological analysis confirmed the presence of malignancy in the patient's penile lesion.

## Abstract

A hard, conical growth that protrudes from the skin's surface and resembles a small horn is known as a cutaneous horn or cornu cutaneum. The horn consists of compact keratin fibers. Cutaneous horns commonly develop on photo-exposed regions and, in exceedingly rare cases, the penis. Although cutaneous horns can develop on healthy skin, they are more widely associated with preexisting skin conditions. We report a rare case of a penile cutaneous horn in a 55-year-old man presenting with pain and a growth on his penis that had persisted for a year. The patient underwent a penile glansectomy under spinal anesthesia. Histopathology revealed a well-differentiated squamous cell carcinoma, indicating malignancy.