Catheterized Urine Cytology of Mucinous Carcinoma Arising in the Renal Pelvis

Primary enteric‐type tubulovillous adenocarcinoma arising in the renal pelvis

“…first demonstrated the clinicopathological features of an extremely rare case of primary mucinous adenocarcinoma arising in the renal pelvis . Following that, a substantial number of interesting case reports describing the pathological features of primary pelvic adenocarcinoma were published; however, within our thorough investigation, we found less than 100 cases reported in the English literature, with most cases reported from Asian countries . Indeed, it is well‐known that transitional cell (urothelial) carcinoma accounts for up to 90% of epithelial‐origin malignancies arising from the renal pelvis, whereas adenocarcinoma accounts for less than 1% .…”

Primary enteric-type mucinous adenocarcinoma of the renal pelvis masquerading as cystic renal cell carcinoma: A case report and review of the literature

“…The majority of cases are diagnosed by intraoperative frozen section or during pathological examination postoperatively. Yonekawa et al reported that cytological findings of the catheterized urine obtained from the renal ureter may serve as a useful hint when combined with clinical data [8]. The urine obtained from the tumor-side ureter was characterized as viscous and contained spherical clusters of cells with occasionally vacuolated, lacy and basophilic cytoplasm.…”

Primary adenocarcinoma of the renal pelvis, ureter and the urinary bladder: A case report and review of the literature

“…The suggested pathogenesis considers the frequent association with chronic irritation, infection, inflammation, hydronephrosis and urinary calculi. Glandular metaplasia of the urothelium may develop as a response to injury, and can often progress to dysplasia and adenocarcinoma (10). The majority of cases are reported in patients older than 60 years, and there is no evidence to suggest that the occurrence of the tumor is associated with gender (5,11).…”