Intralobar sequestration of lung receives blood supply from: (A) Pulmonary aery, (B) Descending abdominal aoa, (C) Internal mammary aery, (D) None of the above
Answer is B. A sequestration consists of normally developed bronchioles and alveoli supplied by systemic rather than pulmonary aeries. 95% of the time this blood supply is from the Aoa either above or below the diaphragm. Other characteristic features of sequestration - They occur most commonly in the lower lobes, L > R Lung sequestrations are of two types Intralobar and Extralobar