Typical renal oncocytoma

Typical renal oncocytoma.

Giant renal oncocytoma.

BACKGROUND Renal onkocytoma is a distinctive benign tumor derived from epithelial cells of the distal renal tubules. These tumors are often clinically asymptomatic, diagnosed accidentally and difficult to distinguish from renal cell carcinoma. CASE REPORT We presented a giant renal onkocytoma in a man aged 64, without any signs or symptoms of the urogenital system disorder. The preoperative d...

Giant renal oncocytoma

We present the case of a 70-year-old male who presented with a large lesion in the right kidney, which was noticed on ultrasonography. CT confirmed the large tumor, and both clinical and radiological findings raised suspicion of a renal cell carcinoma. Surprisingly, histological examination showed it to be a giant oncoytoma.

Modern Pathologic Diagnosis of Renal Oncocytoma

Oncocytoma is a well-defined benign renal tumor, with classic gross and histologic features, including a tan or mahogany-colored mass with central scar, microscopic nested architecture, bland cytology, and round, regular nuclei with prominent central nucleoli. As a result of variations in this classic appearance, difficulty in standardizing diagnostic criteria, and entities that mimic oncocytom...

Giant renal oncocytoma with classic stellate scar.

To cite: Sussman RD, Kowalczyk KJ. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2016218944 DESCRIPTION A middle-aged man with poor access to medical care presented with shortness of breath and 3 years of abdominal distention. On physical examination, he was found to have a palpable mass in the left upper quadrant. He was found to have undiagnosed congestive hea...