Investigation of choice for diagnosing lung sequestration is: March 2009
Ans. C: Angiography A pulmonary sequestration, also known as a bronchopulmonary sequestration or a cystic lung lesion, is a medical condition where a piece of tissue that develops into lung tissue is not attached to the pulmonary blood supply and does not communicate with the other lung tissue. Often it gets its blood supply from the thoracic aoa. This condition is normally detected in children and is generally held to be congenital in nature. The treatment for this is a segmentectomy a thoracotomy. More and more, these lesions are diagnosed by prenatal ultrasound. Symptoms can vary greatly, but they include a persistent dry cough. Sequestrations can be identified in-utero an abnormal aery on ultrasound. The gold standard for diagnosis is pulmonary angiography, but it being a very invasive procedure is getting replaced by CT Scan with a contrasting fluid, as the investigation of choice.
X-ray chest-PA view
Plain CT scan-chest
Angiography
MRI