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Adrenal epithelial cyst

Case contributed by Henry Knipe
Diagnosis almost certain

Presentation

Left flank pain.

Patient Data

Age: 50 years
Gender: Female
ct

Large left retroperitoneal cyst, appears simple without enhancement. Internally low-density at 10 HU. Left kidney is inferiorly displaced with loss of fat plane.

Case Discussion

The patient proceeded to resection. Operative findings were of a large cyst that was attached to the lateral limb of the left adrenal gland, and it peeled away easily from the kidney. The cyst and lateral limb of the left adrenal gland was resected, and the pathological diagnosis was of an adrenal epithelial cyst. 

Adrenal cysts are rare, with an estimated incidence of 0.1%. Of the adrenal cyst subtypes, epithelial cyst are uncommon, account for only 5-10% of adrenal cystic lesions. 

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