Dermoscopic Description of Cutaneous Bronchogenic Cyst

Figure 2: Dermoscopic examination of the cyst. Bronchogenic cysts are rare congenital malformations that result from abnormal budding of the tracheobronchial tree. During embryonic development, the primitive foregut appears during the third week of gestation and divides into a dorsal portion, which elongates to form the esophagus, and a ventral portion, which differentiates to form the tracheobronchial tree. Errors in the development of the ventral foregut will result in bronchogenic cysts [1,2]. The developmental stage at which these errors occur determines the final location of the bronchogenic cysts [3]. Cutaneous presentations of these cysts are rare and are seen shortly after birth or in infancy [3]. They preferentially affect young male children and present clinically as exophytic lesions on the skin with most often the presence of fistulas. The most frequent location is the preseternal area [4].