Giant left adrenal endothelial cyst presenting as a symptomatic retroperitoneal mass: A case report

Figures

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  Fig. 1. Abdominal magnetic resonance imaging (MRI) demonstrating a large retroperitoneal cystic mass measuring 19× 18 × 12 cm, causing inferior displacement of the left kidney and superior displacement of the pancreas.

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  Fig. 2. Intraoperative views of the retroperitoneal cystic mass. (A) Large cystic lesion prior to aspiration, occupying the left retroperitoneal space. (B) Same lesion after intraoperative aspiration, allowing improved mobilization and dissection. (C) Gross specimen of the resected cystic mass following complete surgical excision.

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  Fig. 3. Endothelial cyst: A thin and fibrous cyst wall (Hematoxylin Eosin x100) (A) Cyst lining of flattened, bland endothelial cells (Arrows) Trapped adrenal tissue within the cyst wall (Hematoxylin Eosin x200) (B).

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  Fig. 4. Immunostaining with CD34 antibody: The cyst lining and the numerous capillaries within the adrenal tissue were markedly stained (A) Cytoplasmic staining of the flattened endothelial cells that lined the cyst (B) (Arrows).