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Case Reports
. 2009;48(24):2083-6.
doi: 10.2169/internalmedicine.48.2133.

Perivascular epithelioid cell tumor (PEComa) of the liver diagnosed by contrast-enhanced ultrasonography

Reiko Akitake  1 , Hiroyuki Kimura, Satoru Sekoguchi, Hideki Nakamura, Hiroshi Seno, Tsutomu Chiba, Sotaro Fujimoto
Affiliations
Free article
Case Reports

Perivascular epithelioid cell tumor (PEComa) of the liver diagnosed by contrast-enhanced ultrasonography

Reiko Akitake et al. Intern Med. 2009.
Free article

Abstract

Perivascular epithelioid cell (PEC) is a unique cell which expresses both myogenic and melanocytic markers, and forms PEComa. A 36-year-old woman presented with a 35 mm-diameter liver tumor. MRI showed poor fat component in the tumor. Contrast-enhanced ultrasonography using the newly developed enhancing reagent, Sonazoid, clearly demonstrated early-phase enhancement of the tumor and rapid drainage of the reagent to veins, suggesting a PEComa. Lateral segmentectomy of the liver was performed. Histologically, epithelioid tumor cells around the vessels were immunostained with both HMB-45 and alpha-smooth muscle actin, confirming the diagnosis of PEComa. No recurrence has been found for 18 months following the operation.

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