Maternal serum Alpha Feto Protein (MSAFP) is raised in ail the following conditions except :
**Core Concept**
Maternal serum Alpha Feto Protein (MSAFP) is a protein produced by the fetus that can be detected in the mother's blood. Elevated levels of MSAFP can indicate certain fetal or maternal conditions, while low levels may suggest others.
**Why the Correct Answer is Right**
The primary function of MSAFP is to protect the fetus from the mother's immune system. Elevated MSAFP levels are associated with an increased risk of certain fetal anomalies, such as neural tube defects (e.g., spina bifida), abdominal wall defects (e.g., gastroschisis), and anencephaly. Additionally, MSAFP levels may be elevated in cases of multiple pregnancy (twins, triplets, etc.), fetal demise, and certain maternal conditions like diabetes and preeclampsia.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, so we'll skip it.
* **Option B:** This option is not provided, so we'll skip it.
* **Option C:** This option is not provided, so we'll skip it.
* **Option D:** This option is not provided, so we'll skip it.
**Clinical Pearl / High-Yield Fact**
MSAFP levels are typically measured between 16 and 20 weeks of gestation. A single elevated MSAFP value does not necessarily indicate a problem, but a combination of elevated levels and other risk factors may warrant further investigation.
**Correct Answer: A.**