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Multilocular cystic nephroma

Case contributed by: Dr Roberto Schubert

Presentation:

Palpable mass in the left middle abdomen. Allergy to iodinated contrast.

Patient Data:

Age: 53
Gender: Female
Race: Caucasian
Modality: MRI

Large multilocular cystic mass of the left kidney with fluid-equivalent and atypical cysts, no intracystic enhancement.

Case Discussion:

Histopathology report: multiple, partly hyalinised connective tissue septae with round cell infiltration and pigmented foam cell aggregates.Predominantly one-layered, eosinophilic epithelial cystic wall. Intracystic eosinophilic secretion. Solitary cholesterol granulomas and focal calcifications. No signs of malignancy.

Cystic nephroma with focal regressive changes. 

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