# Forearm Giant Osteochondromas in a Young Patient With Multiple Hereditary Exostoses: A Case Report

## TL;DR

This case report details a 15-year-old boy with a rare bone condition who developed an unusually large benign tumor near his elbow.

## Contribution

The report presents the largest documented proximal radius osteochondroma in a patient with multiple hereditary exostoses.

## Key findings

- The patient had a large osteochondroma at the proximal radius, which was successfully surgically managed.
- The tumor was confirmed to be benign despite the increased risk of malignancy in large osteochondromas.
- The case highlights the impact of MHE on physical and psychological health.

## Abstract

Multiple hereditary exostoses (MHE) is a rare skeletal disorder inherited as an autosomal dominant disorder. It is characterized by widespread multiple osteochondromas that grow near bone growth plates, leading to pain and deformities that significantly impact physical and emotional well-being and disrupt daily activities, social interactions, and psychological health, leading to considerable disability. This case report describes a 15-year-old boy with a family history of MHE who developed a large osteochondroma at his right elbow. We aim to present the surgical management of extraordinarily large-size proximal radius osteochondroma, fortunately, caused by a benign underlying condition despite typically carrying more chances of transformation into malignancy.‎ To the best of our knowledge, it would be the largest proximal radius osteochondroma documented in the literature.