Benign Epithelial Tumors and Tumor-like Proliferations Prostatic Cysts Giant multilocular prostatic cystadenoma is a large tumor composed of acini and cysts lined by prostatic-type epithelium set in a hypocellular fibrous stroma. This rare tumor arises in men between 28 and…
Carcinoma of the urinary bladder is the fourth most common malignancy in men, accounting for an estimated 60,490 new cases and 12,240 cancer deaths in the United States in 2018. Significant progress has been made in the diagnosis and treatment…
The renal pelvis and ureter are muscular conduits lined by urothelium that function to propel urine from the renal calyceal system to the urinary bladder. The ureter and renal pelvis are affected by developmental, reactive, and neoplastic disorders. The developmental…
The first renal neoplasm was reported nearly 200 years ago. In 1953, about eight renal tumors were described in a well-known textbook on surgical pathology. As a consequence of the contributions of numerous investigators over many decades, the most recent…
Renal Cell TUMORS Renal cell carcinomas are tumors that arise from or recapitulate the differentiation of the renal tubular epithelium. They are by far the most common renal cancers and account for more than 90% of all malignancies in the…