# Bilateral Chronic Expanding Hematomas of the Gluteus Maximus Presenting With Gluteal Muscle Contracture: A Case Report

## TL;DR

A rare case of bilateral chronic expanding hematomas in the gluteus maximus muscles is reported, associated with gluteal muscle contracture.

## Contribution

The first English-language report of bilateral gluteus maximus hematomas linked to gluteal muscle contracture.

## Key findings

- Chronic expanding hematomas can present with gluteal muscle contracture.
- Bilateral involvement of the gluteus maximus is a rare manifestation of this condition.

## Abstract

Chronic expanding hematoma is defined as a progressively enlarging soft tissue mass persisting beyond 1 month, typically resulting from prior trauma or surgical procedures. Although the condition is rare, its occurrence within deep musculature—particularly with bilateral involvement of the gluteus maximus—is exceedingly uncommon. No previously published English‐language reports were identified describing bilateral gluteus maximus hematomas associated with gluteal muscle contracture (GMC).

This report describes a 29‐year‐old male presenting with bilateral chronic expanding hematomas involving the gluteus maximus muscles, accompanied by clinical features consistent with GMC.

Chronic expanding hematoma should be considered a potential underlying etiology in individuals presenting with GMC, particularly when involving deep gluteal musculature.