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Atypical renal cyst

Case contributed by Dr Roberto Schubert


Complex left renal cyst on ultrasound.

Patient Data:

Age: 70
Gender: Female
Race: Caucasian
Modality: CT

Left renal cyst with peripheral calcifications and a small enhancing laterocaudal mural nodule. Large simple lower pole cyst on the right.

Case Discussion:

Renal cysts with enhancing portions, however small, must be considered malignant until proven otherwise.

Related articles: Bosniak renal cyst classification.

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