CASE 92 (October 2013)

Clinical information

A 56-year-old man has suffered head trauma and brain death. He had not medical history. Normal renal function.

Both kidneys are rescued for transplantation and have normal gross appearance except for a subcapsular yellow 7 mm lesion in the convexity near the upper pole.

A frozen biopsy of the lesion is taken. See the images.

Figure 1. A montage to show approximately how was the gross appearance of the lesion.

Figure 2. Transversal section of the real specimen.

Figure 3. H&E, frozen section, X100.

Figure 4. H&E, frozen section, X400.

Figure 5. H&E, X100.

Figure 6. H&E, X200.

Figure 7. Masson's trichrome stain, X200.

Figure 8. Methenamine-silver stain, X100.

Figure 9. Methenamine-silver stain, X200.

What is your diagnosis?

Would you transplant this kidney?

See diagnosis and discussion

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