Congenital Cystic Adenomatoid Malformation, Type II: A Rare Cause of Haemoptysis.

Congenital cystic adenomatoid malformation (CCAM) occurs secondary to the cystic adenomatous over-growth of terminal bronchioles, which results in the secondary inhibition of alveolar growth. In most of the cases, respiratory distress is the presenting feature during the neonatal period. In about 90% of patients, recurrent respiratory infections necessitating chest imaging reveal CCAM before the age of two years. We describe here the occurrence of congenital cystic adenomatoid malformation of right lung in a 12-year-old girl presenting with haemoptysis and hypovolaemic shock. She underwent right middle lobectomy; and histopathological examination confirmed the diagnosis. She has been doing well on follow-up.