[Congenital bronchogenic subcutaneous cyst of the back. A case report and review of the literature].

The Authors describe a very rare congenital case of bronchogenic subcutaneous cyst of the scapular region occurring in a 8-year-old girl. Only 8 other cases have been published so far. The cyst was asymptomatic and was surgically removed. It measured 2.3 cm. in diameter. Histologically, the cyst was lined by ciliated columnar pseudostratified epithelium devoid of goblet cells and mucus secreting cells. The epithelium lacked immunoreactivity for estrogen and progesterone receptors. The cyst wall contained smooth muscle bundles, but cartilage was absent. Differential diagnosis with emphasis on cutaneous ciliated cyst (Mullerian cyst) is discussed. It appears conceivable that cutaneous ciliated bronchogenic cysts may show partial or fully developed features indicating their bronchial origin.