๐ ็ธฝ็ฎ้ ๏ฝ ๐ ่ฑๆๅๆ๏ผๆฌ็ฏ๏ผ ๏ฝ ๐ ๅฎๆด็ฟป่ญฏ ๏ฝ โญ ็ฒพ่ฏ็ญ่จ
Bronchogenic cyst
Bronchogenic cyst
Clinical features Bronchogenic cysts presenting in the skin are very rare, with fewer than 70 cases reported.1โ14 There is a marked predilection for males (4:1).13 Most are situated on the precordium or overlying the suprasternal notch and are usually present at birth.1โ3 Occasionally, they are located about the shoulder, back, scapula, neck, abdomen, chin, and perianal area or present at a later age.4,15,16 Clinical presentation is variable and includes cutaneous cystic nodules, sinuses, and even a papillomatous growth.4,5 Occasionally, the cysts drain a mucinous fluid.1,8 Most are asymptomatic, but some are tender or painful. Exceptionally, multiple lesions may be seen.17
Cutaneous lung tissue heterotopia in which fully developed bronchioles and alveoli are present can be regarded as a variant.18,19
Immunohistochemistry has been only rarely documented. The lining epithelial cells express cytokeratin (AE1/AE3) but not carcinoembryonic antigen (CEA).13