Presentation
Complex left renal cyst on ultrasound.
Patient Data
Age: 70 years
Gender: Female
From the case:
Atypical renal cyst
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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.