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   W. S. L. De Silva et al, 2021, Case Reports in Urology CrossRef
2. Concurrent renal cell carcinoma and urothelial carcinoma: long-term follow-up study of 27 cases
   Nienie Qi et al, 2018, World Journal of Surgical Oncology CrossRef
3. Collision Tumor of Urothelial Cell Carcinoma and Clear Cell Renal Cell Carcinoma: A Case Report and Review of the Contemporary Literature
   Jon Griffin et al, 2020, Applied Immunohistochemistry & Molecular Morphology CrossRef
4. Clinicopathological characteristics and outcomes of synchronous renal cell carcinoma and urothelial carcinoma: A population-based analysis
   Kan Wu et al, 2022, Frontiers in Public Health CrossRef
5. Synchronous ipsilateral renal cell carcinoma and transitional cell carcinoma of the renal pelvic with complete remission of TCC after neoadjuvant chemotherapy
   Ali Safadi et al, 2018, Urology Case Reports CrossRef