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Case 76

Surgical Pathology Case



  A 65-year-old male had a right kidney tumor.



The kidney with perinephric adipose tissue measuring 15.0 x 11.0 x 6.5 cm in greatest dimension and weighs 492 grams. Bi-valved kidney revealed a  multilobulated mass in the upper pole which measures 7.0 x 6.0 x 6.0 cm. The mass is well demarcated. The cut surface is yellow-tan, heterogeneous with cystic degeneration. The tumor is limited in the renal capsule with a pushing border. The tumor is noted inside of the renal vein at the margin.


HE, 10

HE, 20


HE, 40

HE, 20


HE, 40

HE, 20


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Source: Department of Pathology, Creighton University Medical Center, Omaha, NE

Photo: Zenggang Pan

Discussion: Zenggang Pan