Intralobar sequestration with cystic adenomatoid malformation and atypia.

Pulmonary sequestration and congenital cystic adenomatoid malformation are infrequent congenital lung disease and the combination of these two entities is rare. Here a case of left pulmonary sequestration with congenital cystic adenomatoid malformation in an asymptomatic elderly woman who presented with recent massive haemoptysis is reported. Fine needle aspiration cytology showed hypercellularity with micro-acinar pattern and mild pleomorphism.