先天囊腫性肺部疾病為一系列相關的先天性異常，其中包括先天性肺氣腫，支氣管囊腫，先天囊腫性腺瘤樣畸形及游離肺。其中先天囊腫性腺瘤樣畸形目前被認為是肺間質在妊娠5 到7 週時無法成功的誘發部分胎兒支氣管肺泡的分化所致。我們報告一例男性新生兒在出生後出現呼吸困難，壓力性氣胸，及愈來愈大的肺部囊腫，其臨床診斷為先天囊腫性腺瘤樣畸形。在本文中我們敘述此病例的臨床及影像學上的表現，以及首次在此疾病中敘述可擴大的肺部囊腫。

Congenital cystic lung diseases comprise a spectrum of interrelated abnormalities thatinclude congenital lobar emphysema (CLE), bronchogenic cysts, congenital cystic adenomatoidmalformation (CCAM), and pulmonary sequestration. CCAMis thought to result from a failure ofthe pulmonary mesenchyme to induce normal bronchoalveolar differentiation in a part of the fetallung between the fifth and seventh weeks of gestation. We describe a male newborn whopresented with respiratory distress, tension pneumothorax, and expanding lung cysts afterdelivery; he was clinically diagnosed as having CCAM. We are the first to describe the clinical andimage presentations of expandable lung cysts under ventilation.