Bronchogenic Cysts in the Skin and Subcutaneous Tissue

Cutaneous Bronchogenic Cyst of the Chin

“…Smooth muscle, seromucinous glands and cartilage are present in 80, 50 and 7%, respectively, of bronchogenic cysts [6], but none of these structures were found in our case.…”

“…They are thought, for example, to arise from a congenital anomalous development of the tracheobronchial buds from the primitive foregut [6]. The other explanation is that a preformed cyst of the thoracic cavity may be pinched off and then migrate to the extrathoracic area [7].…”

A congenial cutaneous bronchogenic sinus of the abdominal wall in an infant

“…The second theory describes the migration of the pinched-off tracheobronchial bud to the cutaneous region. The present case may be best explained by the second theory [13,14].…”

“…This lesion is more common in males than females [5]. Common locations include the suprasternal notch, presternal area, neck, and scapula, and uncommon sites include the shoulder, and chin [3,4,13]. The abdominal wall region is an extremely rare location for cutaneous bronchogenic cysts; only one case has been previously reported [5].…”

“…First, the pinch-off theory suggests that the cyst simply pinches off from the developing tracheal bud during the closure of the mesenchymal plates [9,12,13]. The second theory describes the migration of the pinched-off tracheobronchial bud to the cutaneous region.…”