Terracciano Fulvia1, Marra Antonella1, Bossa Fabrizio1, Covelli Claudia2, Graziano Paolo2, Nassisi Veronica3, Perri Francesco1
1Division of Gastroenterology & Endoscopy, IRCCS, Fondazione Casa Sollievo della Sofferenza, Italy
2 Pathology Unit, IRCCS Fondazione Casa Sollievo della Sofferenza, Italy
3Department of Clinical and Experimental Medicine, University of Messina, ItalyFulltext PDF
Perivascular epithelioid cell tumors, or PEComas, are rare mesenchymal neoplasms composed of distinctive epithelioid cells, which are immunoreactive for both smooth muscle and melanocytic markers. A 48-year-old woman presented with a 28 mm-diameter liver tumor. Contrast-enhanced ultrasonography demonstrated homogeneously iperenhanced in early arterial phase with isoehancement in portal and venous phases. MRI showed poor fat component in the tumor. TC showed a strong heterogeneous enhancement in the arterial phase with a slight decrease during the portal phase. Percutaneuos biopsy of the lesion was performed. Histologically, epithelioid tumor cells around the vessels were immunostained with both HMB-45 and α-smooth muscle actin, confirming the diagnosis of PEComa.
Liver mass; Transabdominal ultrasound; Biopsy; Histology
Terracciano Fulvia, Marra Antonella, Bossa Fabrizio, Covelli Claudia, Graziano Paolo, Nassisi Veronica, Perri Francesco.Contrast-Enhanced Ultrasonography Imaging Features of Perivascular Epithelioid Cell Tumor (Pecoma). Int Jour Gastro Hepat. 2023;2(1):1-6.