Intralobar sequestration of lung is commonest in the ?
**Core Concept**
Intralorer sequestration of the lung is a rare congenital anomaly where a portion of lung tissue receives its blood supply from an anomalous systemic artery, rather than the pulmonary artery. This condition is often associated with other pulmonary abnormalities. The **bronchopulmonary segments** affected are crucial for diagnosis and management.
**Why the Correct Answer is Right**
Intralobar sequestration typically occurs within the lower lobes of the lung, with the left lower lobe being more commonly affected. The sequestrated lung tissue often receives its blood supply from an anomalous artery originating from the **aorta**. This condition can lead to recurrent infections and hemoptysis due to the abnormal blood supply.
**Why Each Wrong Option is Incorrect**
**Option A:** This is not the most common location.
**Option B:** Not typically associated with this condition.
**Option C:** Not the most frequent site.
**Clinical Pearl / High-Yield Fact**
Intralobar sequestration is a congenital condition that may present with recurrent pneumonia or hemoptysis, and diagnosis is often made with **CT angiography**.
**Correct Answer: D. Lower lobe**