Bronchogenic Cyst in Posterior Mediastinum with Butterfly Vertebra: A Case Report

Abstract

Most mediastinal cystic masses result from abnormal development of the embryo. Common developmental cysts in the posterior mediastinum are bronchogenic, neurenteric, and esophageal duplication cysts. These cystic masses appear identical on CT, but a cystic lesion adjacent to the esophagus is usually an esophageal duplication cyst, and a cyst associated with vertebral anomalies indicates a presumptive diagnosis of a neurenteric cyst. Herein, we present the case of a 27-year-old man with a bronchogenic cyst in the posterior mediastinum with a butterfly vertebra.

Radioiodine-Avid Paravertebral Bronchogenic Cyst Mimicking Neurofibroma

“…They are most frequently incidental findings in asymptomatic patients but may also present with symptoms related to secondary infection or compression of adjacent organs. [1][2][3][4] A paravertebral bronchogenic cyst, posterior to aorta, is an extremely rare finding. [1][2][3] A few cases of radioiodine accumulation in mediastinal and retroperitoneal bronchogenic cysts have been reported so far, but the mechanism by which it occurs has not been fully elucidated yet.…”

“…[1][2][3][4] A paravertebral bronchogenic cyst, posterior to aorta, is an extremely rare finding. [1][2][3] A few cases of radioiodine accumulation in mediastinal and retroperitoneal bronchogenic cysts have been reported so far, but the mechanism by which it occurs has not been fully elucidated yet. [5][6][7] Bronchogenic cysts are lined by ciliated columnar respiratory epithelium, 1,4 and immunohistochemistry studies have confirmed Na-I symporter (NIS) expression in an array of cells, other than thyroid cells, including the bronchial epithelium 8 ; therefore, it seems plausible to hold NIS expression responsible for the observed phenomenon.…”

“…They are most frequently located in the middle mediastinum near the carina, often in paratracheal, hilar, and intraparenchymal locations and rarely in posterior and anterior mediastinum, subdiaphragmatic, and retroperitoneal locations. They are most frequently incidental findings in asymptomatic patients but may also present with symptoms related to secondary infection or compression of adjacent organs 1–4 . A paravertebral bronchogenic cyst, posterior to aorta, is an extremely rare finding 1–3 .…”