**Core Concept**
Atrial myxoma is the most common primary cardiac tumor in adults, accounting for approximately 50-70% of all cases. It is a benign, gelatinous tumor that originates from the atrial septum, typically presenting with symptoms related to obstruction or embolization.

**Why the Correct Answer is Right**
Atrial myxomas are known to have a slight male predilection, with a male-to-female ratio ranging from 1.5:1 to 3:1. This sexual dimorphism is thought to be influenced by the higher levels of estrogen in females, which may suppress the growth of these tumors. The exact mechanism behind this phenomenon is unclear, but it highlights the importance of considering sex-specific factors in the diagnosis and management of atrial myxomas.

**Why Each Wrong Option is Incorrect**
**Option A:** Most common in right atrium - Atrial myxomas typically arise from the interatrial septum, near the fossa ovalis, and are more commonly associated with the left atrium (70-80% of cases).
**Option B:** Rarely reoccurs after excision - While surgical excision is generally curative, there is a risk of recurrence, estimated to be around 3-5% in some series.
**Option C:** Distant metastases are seen - Atrial myxomas are benign tumors and do not metastasize to distant sites. However, they can cause embolic events due to fragmentation and subsequent arterial occlusion.

**Clinical Pearl / High-Yield Fact**
Atrial myxomas can be associated with a characteristic clinical triad: obstructive symptoms (e.g., dyspnea, syncope), embolic events, and a high erythrocyte sedimentation rate (ESR). Recognizing this triad is crucial for early diagnosis and prompt treatment.

✓ Correct Answer: D. More common in males