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Hepatic perivascular epithelioid tumor (PEComa). A case report
Hélder Cardoso1, Marco Silva1, Filipe Vilas-Boas1
1Gastroenterology Department, Centro Hospitalar São João, Faculty of Medicine of the University of Porto, Alameda Professor Hernâni Monteiro, 4200-319 Porto, Portugal.
Clinics and Research in Hepatology and Gastroenterology
|April 1, 2017
Summary
A rare liver tumor, PEComa, was diagnosed in a woman after initial misdiagnosis as hepatocellular adenomas. This case highlights the diagnostic challenges and need for more research on PEComa natural history and treatment.
Area of Science:
- Oncology
- Pathology
- Hepatology
Background:
- Hepatocellular adenomas are benign liver tumors often identified via imaging.
- Perivascular Epithelioid Cell Tumors (PEComas) are rare mesenchymal neoplasms with diverse presentations.
Observation:
- A 37-year-old female presented with liver nodules initially suspected as hepatocellular adenomas.
- Radiological findings showed atypical features, with one nodule progressing in size and exhibiting hemorrhage over two years.
- Surgical resection and subsequent histological and immunohistochemical examination confirmed PEComa.
Findings:
- Preoperative diagnosis of hepatic PEComa is challenging due to overlapping features with other liver lesions.
- Histopathology and immunohistochemistry are crucial for definitive PEComa diagnosis.
- This case underscores the importance of considering rare diagnoses in atypical presentations.
Implications:
- This report contributes to the limited understanding of hepatic PEComa's natural history and clinical behavior.
- Further research is needed to establish optimal diagnostic and therapeutic strategies for this rare liver tumor.
- Increased awareness may improve early detection and management of PEComas.