**Core Concept**
Pulmonary hamartoma is a rare, benign lung tumor composed of abnormal growths of normal lung tissue. It is often asymptomatic and can be detected incidentally on imaging studies.

**Why the Correct Answer is Right**
Pulmonary hamartomas are indeed the most common benign lung tumors, accounting for approximately 8-9% of all lung tumors. They are more common in males than females, with a male-to-female ratio of approximately 3:1. The characteristic "popcorn calcification" appearance on chest X-ray or CT scan is a diagnostic hallmark of pulmonary hamartoma, resulting from the calcification of the tumor's cartilaginous or osseous components.

**Why Each Wrong Option is Incorrect**
* **Option A:** Not the most common benign tumor of lung - this is actually a characteristic of pulmonary hamartoma.
* **Option B:** More common in females - this is incorrect, as pulmonary hamartomas are more common in males.
* **Option C:** Chest X-ray shows "Pop corn calcification" - this is true, but option D is a better choice because it includes all the correct statements.

**Clinical Pearl / High-Yield Fact**
Pulmonary hamartomas are often asymptomatic and can be detected incidentally on imaging studies, especially in patients with long-standing cigarette smoking history. They are typically benign and do not require surgical resection unless they cause symptoms or are suspected to be malignant.

**✓ Correct Answer: D. All are true**