A Rare Case of Retroperitoneal Bronchogenic Cyst: A Case Report

罕見之後腹腔支氣管原性囊腫：病例報告

黃眉菁(Mei-Ching Huang) ； 陳良光(Liang-Kuang Chen) ； 盧大年(Tai-Nein Lu) ； 黃一勝(Thomas I. S. Hwang) ； 李進成(Chin-Cheng Lee) ； 蘇誠道(Cheng-Tau Su)

《中華放射線醫學雜誌》 33卷2期 (2008/06) Pp. 109-113

摘要

支氣管原性囊腫(bronchogenic cyst)是原生於前腸的先天性異常，通常發生在縱隔腔，偶爾會有病例報告在頸部、皮下、橫膈膜、食道、胃、腹部及後腹腔。我們在此報告一位54歲沒有症狀的男性，在接受正子斷層造影的健康檢查時發現左腎上方緊貼橫膈腳有一腫瘤，經過手術切除及術後組織學檢查證實為支氣管原性囊腫。

並列摘要

We reported a 54-year-old asymptomatic man who received PET-CT scan for physical health examination at our hospital. In PET-CT scan, we incidentally found a left suprarenal tumor located adjacent to diaphragmatic crus with almost no FDG activity. This tumor was cystic in nature and slightly enlarged in size on CT scan one year later. Laparoscopic adrenalectomy and resection of this suprarenal tumor were performed. Histopathologic examination revealed a thinwalled cystic mass lined by ciliated pseudostriated columnar epithelium and smooth muscle fiber which was diagnosed as bronchogenic cyst.
Bronchogenic cyst is regarded as a congenital abnormality of the primitive foregut. The most common location is in the mediastinum, particularly posterior to the carina; however, cervical, cutaneous, diaphragmatic, gastric, abdominal, and retroperitoneal bronchogenic cysts have all been described in English literatures [1].
Subdiaphragmat ic bronchogenic cysts are unusual and that reported in English literatures have a tendency to locate on the left of midline. The most common location was within a triangle behind the stomach defined by the midline, the splenic vein, and the spleen/diaphragm [1]. If a cystic tumor locates in this region, bronchogenic cyst should be listed in the differential diagnosis. Contrast-enhanced CT scan or MR image can be useful for differentiating hyperattenuating cysts from soft tissue masses [2].