Multilocular cystic nephroma
Palpable mass in the left middle abdomen. Allergy to iodinated contrast.
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Large multilocular cystic mass of the left kidney with fluid-equivalent and atypical cysts, no intracystic enhancement.
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.