# When a Lump Is Not a Cyst: A Case of Superficial Venous Aneurysm of the Hand Diagnosed with High-Resolution Ultrasound

## TL;DR

A rare hand lump was correctly identified as a superficial venous aneurysm using high-resolution ultrasound, avoiding misdiagnosis.

## Contribution

Demonstrates the utility of high-frequency ultrasound in diagnosing superficial venous aneurysms of the hand.

## Key findings

- A 28-year-old male had a subcutaneous mass on the hand diagnosed as a superficial venous aneurysm.
- High-resolution ultrasound with an 18 MHz probe confirmed the diagnosis and showed no changes at follow-up.
- The case emphasizes the importance of high-frequency ultrasound in managing such rare lesions.

## Abstract

Superficial venous aneurysms of the upper extremities are a rare clinical entity, often underdiagnosed and misinterpreted as other soft tissue masses. We present the case of a 28-year-old male patient with a subcutaneous mass on the dorsum of the left hand, diagnosed as a superficial venous aneurysm by high-resolution ultrasound using a probe bandwidth of up to 18 MHz, unchanged at three-month Doppler-ultrasound examination. This case highlights the fundamental role of high-frequency ultrasound in the differential diagnosis and conservative management of such lesions.