The following are related to anencephaly except:
**Anencephaly and Associated Conditions**
**Core Concept**
Anencephaly is a congenital anomaly characterized by the absence of a major portion of the brain, skull, and scalp. It occurs due to the failure of the neural tube to close during embryonic development. Anencephaly is often associated with other neural tube defects (NTDs) and genetic syndromes.
**Why the Correct Answer is Right**
Anencephaly is a type of NTD, and individuals with this condition often have other related anomalies, such as spina bifida, hydrocephalus, and microcephaly. The presence of these associated conditions can help in the diagnosis and management of anencephaly. **Option C** is a condition that is often associated with anencephaly.
**Why Each Wrong Option is Incorrect**
**Option A:** Not directly related to anencephaly, although some individuals with anencephaly may have associated cardiac defects.
**Option B:** Not typically associated with anencephaly, as it is a separate type of congenital anomaly.
**Option D:** Not directly related to anencephaly, as it is a condition that affects the abdominal cavity.
**Clinical Pearl / High-Yield Fact**
Individuals with anencephaly often have a poor prognosis, and the condition is usually diagnosed prenatally or at birth. It is essential for healthcare providers to be aware of the associated conditions and provide comprehensive care to affected individuals and their families.
**Correct Answer: C. Trisomy 13**