Published in:
Open Access
01-12-2018 | Case Report
Primary angiosarcoma arising in an angiomyolipoma of the kidney: case report and literature review
Authors:
Hongwei Guan, Lizhi Zhang, Qiuping Zhang, Wenjing Qi, Suling Xie, Jinping Hou, Huali Wang
Published in:
Diagnostic Pathology
|
Issue 1/2018
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Abstract
Background
Primary angiosarcoma of the kidney is a rare and aggressive malignant tumor presenting with a recognizable vascular differentiation. Its prognosis is fatal and the pathogenesis remains unclear. Renal angiomyolipoma is a relatively infrequent renal cortical neoplasm and is composed of variable proportions of adipose tissue, spindle cells, epithelioid smooth muscle cells and abnormal thick-walled blood vessels.
Case presentation
Here, we reported a case in which a 64-year-old woman presenting with the chief complaint of a progressively enlarged mass in the left abdomen. Abdominal computed tomography confirmed presence of a tumor measuring 18 cm × 11 cm in the left posterior renal fascia. Microscopic examination and immunohistochemical staining confirmed co-existence of angiomyolipoma and angiosarcoma. Furthermore, the two components interspersed with each other and there were transitional zones between them.
Conclusions
In this case, we described for the first time a primary renal angiosarcoma possibly arising in a pre-existing angiomyolipoma of the kidney.