A case of retroperitoneal bronchogenic cyst treated by laparoscopic surgery

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We describe herein a rare case of a retroperitoneal bronchogenic cyst successfully treated by laparoscopic surgery. A 39-year-old man with low-grade fever was referred to our hospital because of suspicion of an adrenal tumor. Abdominal computerized tomography (CT) and ultrasonography revealed a homogenous solid mass, 35 x 30 mm in diameter, in the left suprarenal region. Laboratory studies showed that the levels of adrenal hormones were normal except for the white blood cell count of 9,700/microL and C-reactive protein of 1.7 mg/dl. We diagnosed it as a non-functioning adrenocortical adenoma or an adrenal cyst. However, one year later he underwent laparoscopic surgery because the mass had gradually increased by 10 mm and the low-grade fever persisted. Pathological evaluation of the surgical specimens established the diagnosis of retroperitoneal bronchogenic cyst. The low-grade fever disappeared after the surgery.
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