All the following are true about Chiari network in the heart except:
**Core Concept**
A Chiari network is a rare congenital anomaly characterized by a fibromuscular remnant of the embryonic truncus arteriosus, connecting the inferior vena cava to the coronary sinus or the right atrium. It is a benign condition but can potentially cause obstruction of blood flow.
**Why the Correct Answer is Right**
The Chiari network is a fibromuscular structure, often composed of fibrous tissue and sometimes muscular fibers, which connects the inferior vena cava to the coronary sinus or the right atrium. This connection is a remnant of the embryonic truncus arteriosus, which eventually gives rise to the aorta, pulmonary artery, and other major vessels. The Chiari network is a normal variant in some individuals, but in others, it can cause partial obstruction of blood flow, leading to symptoms such as heart failure or arrhythmias.
**Why Each Wrong Option is Incorrect**
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* **Option C:** This option is not provided.
* **Option D:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
It's essential to note that a Chiari network can be mistaken for a more serious condition, such as a cardiac tumor or a vascular anomaly. However, a detailed echocardiogram or cardiac MRI can help differentiate it from other conditions.
**Correct Answer:**
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