A case report of primary upper urinary tract signet-ring cell carcinoma and literature review

Upper tract urothelial carcinoma with pure non-urothelial histology is an exception but variants are present in ~  25% of cases. Primary upper urinary tract signet -ring cell carcinoma is extremely rare.
Source: BMC Urology - Category: Urology & Nephrology Authors: Tags: Case report Source Type: research