Zhiqiang, Zhang, Min Jie, Yu Dexin, Shi Haoqiang, and Xie Dongdong. “Renal Collision Tumour of Papillary Cell Carcinoma and Chromophobe Cell Carcinoma With Sarcomatoid Transformation: A Case Report and Review of the Literature”. Canadian Urological Association Journal 8, no. 7-8 (August 11, 2014): e536–9. Accessed April 27, 2024. https://cuaj.ca/index.php/journal/article/view/1811.