Rashid Sameera, Akhtar Mohammed
Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar.
Case Rep Pathol. 2018 Jan 17;2018:1837510. doi: 10.1155/2018/1837510. eCollection 2018.
Sarcomatoid variant of urothelial carcinoma (SVUC) of the renal pelvis is a rare entity. To the best of our knowledge, around 25 cases of this neoplasm have been reported in the literature to date, most of which were of high stage. The inferior vena cava tumour thrombus, which is a hallmark of renal cell carcinoma (RCC), may rarely be found in urothelial carcinoma of renal pelvis. In this report, a case of SVUC associated with tumour extension to inferior vena cava is documented. This association has been encountered in only one previously reported case. The possibility of urothelial carcinoma of the renal pelvis should therefore be included in the differential diagnosis of tumour thrombus of the inferior vena cava.
肾盂尿路上皮癌的肉瘤样变体（SVUC）是一种罕见的实体瘤。据我们所知，迄今为止，文献中报道了约25例这种肿瘤，其中大多数处于晚期。肾细胞癌（RCC）的标志性表现——下腔静脉肿瘤血栓，在肾盂尿路上皮癌中可能很少见。在本报告中，记录了1例伴有肿瘤延伸至下腔静脉的SVUC病例。这种关联仅在之前报道的1例病例中出现过。因此，在下腔静脉肿瘤血栓的鉴别诊断中应考虑肾盂尿路上皮癌的可能性。
