RT Journal Article SR Electronic T1 Haemopneumothorax from congenital cystic adenomatoid malformation in a cryptorchidism patient JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 430 OP 432 DO 10.1034/j.1399-3003.2000.15b36.x VO 15 IS 2 A1 SC Lee A1 YL Cheng A1 CP Yu YR 2000 UL http://erj.ersjournals.com/content/15/2/430.abstract AB Congenital cystic adenomatoid malformation (CCAM) of the lung is an uncommon congenital anomaly, especially in young adults. This study reports an 18-yr-old male with CCAM involving the right upper lobe, who presented with a moderate spontaneous haemopneumothorax initially. The patient also had bilateral abdominal cryptorchidism which required surgical treatment earlier in childhood. The chest radiographs and contrast-enhanced computed tomographic scan of the chest showed a multicystic lesion with air-fluid levels in the right upper lung. The right upper lobe was resected through a posterolateral thoracotomy. Histological examination confirmed the diagnosis of CCAM. To the authors' knowledge, congenital cystic adenomatoid malformation presenting with spontaneous haemopneumothorax and haemoptysis has never been described in the literature.