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Case Reports in Pathology
Volume 2018, Article ID 1837510, 5 pages
https://doi.org/10.1155/2018/1837510
Case Report

Sarcomatoid Variant of Urothelial Carcinoma of the Renal Pelvis with Inferior Vena Cava Tumour Thrombus: A Case Report and Literature Review

Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar

Correspondence should be addressed to Sameera Rashid; aq.damah@2dihsars

Received 19 September 2017; Accepted 20 December 2017; Published 17 January 2018

Academic Editor: Maria M. Picken

Copyright © 2018 Sameera Rashid and Mohammed Akhtar. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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.