Hypervascular adrenal masses include pheochromocytoma, metastases caused by clear
renal cell carcinoma/hepatocellular carcinoma. Alveolar soft part sarcoma (ASPS) causing
hypervascular metastases is not described in the literature. Here, we describe the
first case of ASPS presenting as hypervascular metastasis. Our case was a 23-year-old
male incidentally detected right adrenal mass during the evaluation of pain in the
abdomen. On computed tomography (CT), adrenal mass showed bright enhancement in early
arterial phase (unenhanced Hounsfield unit [HU]-45.3; arterial phase HU-158.2). 18-
flurodeoxyglucose positron emission tomography/CT showed multiple lesions and was
confirmed histologically to be due to ASPS.
Keywords
Adrenal contrast-enhanced computed tomography - hypervascular metastasis - soft tissue
sarcoma - washout
