Intravascular Papillary Endothelial Hyperplasia (Masson’s Tumor) Found as an Adrenal Incidentaloma

David A. Levine, Richard A. Levine, Elvia Goez-Gutierrez


Intravascular papillary endothelial hyperplasia (Masson’s tumor) is a rare, benign, neoplastic lesion which arises from endothelial proliferation around an existing thrombus. This condition is most commonly found in the head, neck, or extremities. Only four cases of Masson’s tumor in the adrenal gland have been reported to date, making this an extremely rare location. When occurring in the adrenal gland, confusion of this neoplasm with highly malignant conditions is common; therefore, Masson’s tumor is a diagnosis of exclusion. A case of adrenal intravascular papillary endothelial hyperplasia discovered as an incidental finding on abdominal CT is examined.

J Med Cases. 2015;6(7):318-319


Masson tumor; Adrenal; Intravascular papillary endothelial hyperplasia; Intravascular

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