**Question:** All of the following are true about meningocele except:

A. Meningocele is a herniation of the meninges through a defect in the vertebral column or coccygeal arch.
B. Meningocele is a type of spinal cord injury.
C. Meningocele typically occurs due to an acquired defect.
D. Meningocele is a rare condition that affects only infants.

**Correct Answer:** .

**Core Concept:** Meningocele is a type of spinal dysraphism, which refers to the abnormal development of the neural tube and its derivatives. In meningocele, the meninges (the protective membranes covering the brain and spinal cord) herniate through a defect in the vertebral column or coccygeal arch, resulting in a protrusion that may be felt or seen in the skin.

**Why the Correct Answer is Right:** B is incorrect because meningocele is not a type of spinal cord injury. Instead, it is a congenital condition that occurs due to the failure of the meninges to properly enclose the spinal cord during embryonic development. This failure results in an abnormal opening or defect in the vertebral column or coccygeal arch, leading to the herniation of the meninges through this defect.

**Why Each Wrong Option is Incorrect:**

A is incorrect because meningocele is not an acquired condition but rather a congenital abnormality. It occurs due to developmental errors, not secondary to trauma or other postnatal events.

C is incorrect because meningocele can affect individuals of any age, not just infants. Although it is more common in infants due to the open anatomy of the spinal column during their development, meningocele can also occur in children, adolescents, and adults.

D is incorrect because meningocele is not a rare condition. Although its prevalence may be lower than some other spinal dysraphisms, meningocele still occurs in a significant proportion of the population.

**Clinical Pearl:** Meningocele is a type of spinal dysraphism, which includes other conditions like lipomyelomeningocele and lipomyelocoele. These conditions are often collectively referred to as neural tube defects (NTDs) due to their common etiology. Spinal dysraphism is a group of congenital malformations of the neural tube, spinal cord, and/or its coverings, which may present with neurological deficits, sensory loss, and/or spinal cord compression.

**Why Each Wrong Option is Incorrect:**

A is incorrect as spinal dysraphism can affect individuals of any age. Although it is more common in infants due to the open anatomy of the vertebral column during their development, meningocele can also occur in children, adolescents, and adults.

B is incorrect because spinal dysraphism is not a rare condition. Although its prevalence may be lower than some other spinal dysraphisms, meningocele still occurs in a significant proportion of the population.

C is incorrect because spinal dysraphism is not an acquired condition. It is a congenital malformation resulting