ABSTRACT:

Bronchogenic cyst are generally found in mediastinum ,particularly posterior to carina, but they rarely occur in unusual sites such as skin, subcutaneous tissue, pericardium and retroperitoneum. Bronchogenic cysts can in fact mimic hydatid cysts particularly in endemic areas like india. We report a case of retroperitoneal bronchogenic cyst mimicking a hydatid cyst in retroperitoneal location. A 45-year-old man was admitted to our hospital with complaint of pain in right iliac fossa. CECT of abdomen showed abdominopelvic retroperitoneal cystic mass lateral to right psoas muscle and anterior to right iliacus muscle. CECT findings were suggestive of hydatid cyst. Under general anesthesia, exploratory laprotomy and excision of the retroperitoneal cyst was done. Histopathological find bronchings were that of bronchogenic cyst. Most bronchogenic cysts have a benign nature, but malignant changes have also been reported. Therefore, if a cystic tumor in the abdomen is suspected during preoperative diagnosis, a bronchogenic cyst should be considered in the differential diagnosis. Although most are asymptomatic, excision is recommended to establish a definite diagnosis, alleviate any symptoms and to remove the documented risk of malignant transformation.

KEYWORDS: Retroperitoneum; Bronchogenic cyst; Hydatid cyst.

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