This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
Sequestration lung is best diagnosed by 
Select and explain. 
A. CT Scan, B. MRI, C. Barium swallow, D. Angiography
D: Angiography
Answer: D: Angiography 
Explanation: Pulmonary sequestration:It is an embryonic mass of lung tissue that has no identifiable bronchial communication and that receives blood supply from 1 or more anomalous systemic aeriesClassified as extralobar (25%) and intralobar (75%)Demonstration of dominant feeding vessel, usually from the aoa or its major vessels, and venous drainage to the pulmonary veins suggests the diagnosisThe definitive diagnosis is made by using angiography ( conventional, CTA, MRA)(Ref: Sumer Sethi 4/e p35)