Atypical renal cyst

Case contributed by Dr Roberto Schubert

Presentation

Complex left renal cyst on ultrasound.

Patient Data

Age: 70 years
Gender: Female
CT

Left renal cyst with thick peripheral calcifications and a small enhancing inferolateral 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.

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