Department of Radiology, Chonnam National University Medical School, Gwangju, South Korea.
Department of Urology, Chonnam National University Medical School, Gwangju, South Korea.
Int Braz J Urol. 2019 Mar-Apr;45(2):402-405. doi: 10.1590/S1677-5538.IBJU.2018.0375.
Primary angiosarcomas of the kidney are very rare, but highly aggressive tumors showing poor prognosis. Patients frequently complain of flank pain, hematuria, or a palpable mass. We present a case of primary renal angiosarcoma occurring in a 61-year-old man. CT images depicted a huge exophytic mass (16 cm in diameter) in the right kidney, exhibiting extensive hemorrhage. The mass showed centripetal peripheral nodular enhancement on dynamic contrast-enhanced images. Furthermore, MR imaging revealed a tangled mesh of tumor vessels in the periphery of the mass. We suggest its inclusion in the differential diagnosis of cases of hemorrhagic renal tumors with prominent vasculature.
肾脏原发性血管肉瘤非常罕见，但却是侵袭性很强且预后不良的肿瘤。患者常主诉腰痛、血尿或可触及的肿块。我们报告 1 例 61 岁男性发生的肾脏原发性血管肉瘤。CT 图像显示右肾巨大外生性肿块（直径 16cm），广泛出血。肿块在动态对比增强图像上表现为向心的周边结节样强化。此外，MR 成像显示肿块周边有一团纠结的肿瘤血管。我们建议将其纳入伴显著血管结构的出血性肾肿瘤的鉴别诊断中。
