A fibro-adipose vascular anomaly (FAVA) is a complex venous malformation characterized by intramuscular fibrofatty replacement and dilation of veins. As FAVA is a rare entity and associated with a complex constellation of vascular anomalies, it is often misdiagnosed. This report discusses a case of a 26-year-old woman who presented with swelling on the lateral aspect of the right thigh. FAVA was diagnosed on the basis of radiological and histopathological examinations. After en-bloc resection of the mass, the patient's pain and ability to move significantly improved. We describe the clinical, radiological, and pathological aspects of FAVA, as well as its management.
Keywords: dilation of veins; mobility limitation; unilateral leg swelling; vascular malformation; venous malformation.
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