Non-immune hydrops fetalis is caused by all except
**Core Concept**
Non-immune hydrops fetalis (NIHF) is a condition characterized by the accumulation of fluid in two or more fetal compartments, such as the skin, pleura, pericardium, or placenta. This condition can result from various congenital anomalies, infections, or other fetal insults.
**Why the Correct Answer is Right**
NIHF can be caused by a variety of factors, including congenital heart defects, chromosomal abnormalities, and fetal anemia. Infections such as parvovirus B19 can also lead to NIHF by causing severe anemia in the fetus. Additionally, conditions such as twin-to-twin transfusion syndrome and fetal sacrococcygeal teratomas can also contribute to NIHF.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, so we will skip it.
* **Option B:** This option is not provided, so we will skip it.
* **Option C:** This option is not provided, so we will skip it.
* **Option D:** This option is not provided, so we will skip it.
**Clinical Pearl / High-Yield Fact**
One of the key features of NIHF is that it can be caused by a variety of factors, making it a complex and multifaceted condition. Fetal anemia is a common underlying cause, and early detection and management are crucial to improve fetal outcomes.
**Correct Answer:**
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