Primary small cell carcinoma of the ureter: Case report and review of the literature.

Rationale: Primitive small cell carcinoma of the ureter is extremely rare, in this case report is meticulously described its aggressive clinical course and the pathological clues that help with the diagnosis. Also, a detailed table with the clinico-pathological features of analogous case reports in literature is provided.

Patient Concerns: A 79-year-old female presented with gross hematuria and flank pain.