Not Just a Popliteal Aneurysm: A Case of Metastatic Epithelioid Angiosarcoma

Introduction

Popliteal aneurysms are the second most common aneurysm. This case report describes a case of angiosarcoma in a popliteal aneurysm, illustrating the importance of post-operative surveillance in expanding popliteal aneurysms post-treatment.

Report

A 79-year-old male presented with an enlarging mass in the left popliteal fossa, 18 months post-ligation and bypass for a left popliteal aneurysm. The case proved to be metatstatic epithelioid angiosarcoma, arising in the left popliteal fossa.

Discussion

Epithelioid angiosarcomas are rare, aggressive vascular neoplasms. An awareness of these lesions during surveillance of patients with expanding popliteal aneurysms post-treatment, would allow for earlier diagnosis and more timely interventions.