Case 195

Surgical Pathology Case


  4-year-old boy. Abdominal and lower back pain. Ultrasound showed a solid mass enhancing the left kidney.



The nephrectomy specimen measures 25.5  12.5  6.5 cm and weighs 535 grams. In the upper pole of the kidney, there is a 5.5  4.2  2.5 cm thinly encapsulated mass with a solid, trabeculated bright yellow cut surface and a central region of white fibrous tissue.


HE, 2

HE, 4


HE, 10

HE, 20


HE, 20

HE, 40


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

Photo: Zenggang Pan

Discussion: Zenggang Pan