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• The tumor appears as a solitary nodule with a pale tan cut surface.
• Note the tumor's bulging appearance above the cut surface of the kidney.
(Description By:H. Yamase )
(Image Contrib. by:H. Yamase UCHC )
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•The photograph shows the cut surface of a kidney with Wilms tumor.
•The tumor has massively replaced much of the kidney. Only a small remnant of grossly recognizable kidney is seen (arrow).
•On cut section, the tumor is light tan, fleshy and shows irregular areas of hemorrhage.
(Description By:H. Yamase, M.D. )
(Image Contrib. by: UCHC )
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• The tumor (T) is seen to the left which is the upper pole. It replaces the cortex and medulla in the area involved.
• The tumor does not distort the reniform shape of this kidney and is not massive in size. This Wilms tumor was discovered because the patient had Beckwith-Wiedemann syndrome.
• Note the presence of multiple nodular lesions in the remainder of the parenchyma which microscopically turned out to be benign renal blastema.
(Description By:H. Yamase )
(Image Contrib. by:H. Yamase UCHC )
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Treated Wilms
•The tumor at the time of discovery was too massive to surgically remove. The patient was treated with chemotherapy first. The tumor reduced in size and was removed.
•Note the fibrous rim (arrow) that demarcates the tumor from the uninvolved kidney.
•The gross features suggest that the tumor originated from the peripheral renal parenchyma.
(Description By:H. Yamase )
(Image Contrib. by:H. Yamase UCHC )
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• The specimen was cut after formalin fixation. The tumor replaces the lower pole of this kidney and occupies much of the equatorial region.
(Description By:H. Yamase )
(Image Contrib. by:H. Yamase UCHC )
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