Retroperitoneal bronchogenic cysts are extremely rare congenital anomalies that represent malformations of the embryonic foregut and are morphologically expressed as maldevelopments of the respiratory system. Because of the low prevalence of these tumors, their imaging features have seldom been described. We present the computed tomographic and magnetic resonance imaging findings of a case of retroperitoneal bronchogenic cyst.
Schwannoma is a benign neurogenic tumor arising from the sheath of peripheral nerves. It occurs very rarely in the mesentery, where it is difficult to diagnose. Herein we describe a case in which contrast-enhanced CT and gadolinium-DTPA-enhanced MR showed a locally enhanced well-defined tumor with a cystic component just anterior to the duodenum. These findings corresponded well to the resected specimen.
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