Why the study?
Angiosarcoma arising in the retroperitoneal space is rare and presents preoperative diagnostic difficulties.
This case highlights the preoperative diagnostic challenges of rare perirenal angiosarcomas, where initial needle biopsy may be non-diagnostic.
Initial non-diagnostic biopsy warrants caution before excluding rare perirenal angiosarcoma; leaves open optimal preoperative diagnostics.
Angiosarcoma arising in the retroperitoneal space is rare. We report a case of perirenal angiosarcoma presenting preoperative diagnostic difficulties. A 49-year-old man was referred to our department with left kidney mass. Specimens of CT-guided percutaneous needle biopsy of the mass did not contain any atypical cells suggestive of malignancy. A CT scan 6 months after embolization of the tumor revealed growth of the mass and two space-occupying lesions appearing in the liver. Laparoscopic resection of the left kidney with perirenal mass and one of the liver lesions was performed. Histopathological findings confirmed a diagnosis of perirenal angiosarcoma with hepatic metastases.
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Matsumura et al. (2020) studied this question.
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