Congenital cystic adenomatoid malformation of lung: Report of two cases with review of literature
A 30-year-old G2 P1 L1, of nonconsanguineous marriage, had a normal antenatal course until 20.5 weeks of gestation, when she presented with history of per vaginal bleeding and abdominal pain since three days. Her past medical history and family history were unremarkable. On examination uterus was of 24 weeks and fetal heart sounds were not localized. Routine blood and biochemical investigations were within normal limits. Subsequently; she delivered a stillborn fetus, clinically it was concluded as inevitable abortion and after informed consent the fetus was sent for pathological examination.\nOn autopsy, it was a male fetus weighing 1,450 g. External examination did not reveal any anomaly. On internal examination all organs were in situ. The right lung was enlarged (7 × 5 × 3 cm) cut-section showed cysts of varying sizes majority of them were < 2 cm. The left lung was normal (3.5 × 2 × 1 cm). On histology, right lungs showed multiple cysts relatively uniform in size resembling bronchioles, lined by stratified columnar epithelium, and having thin fibromuscular septa. Mucus production was not evident on periodic acid Schiff (PAS) staining [Figure -]. All other visceral organs were congested, but well-developed and revealed no anomalies. With the above features, a pathological diagnosis of CCAM Stocker type II was offered.