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Arnold-Chiari Deformity

Definition: Arnold-Chiari deformity is a structural abnormality in which the lower part of the brain, known as the cerebellum, extends into the upper spinal canal. This can cause compression on the brainstem and disrupt the normal flow of cerebrospinal fluid.

Parts of Speech: Noun

Senses:
1. A congenital malformation characterized by the displacement of the cerebellum and brainstem into the spinal canal.
2. An acquired condition resulting from injury or infection, causing similar displacement of brain structures.

Usage:
- This medical condition is usually diagnosed during infancy or childhood.
- Arnold-Chiari deformity type I is the most common form and may remain asymptomatic throughout a person's life.
- Symptoms of Arnold-Chiari deformity can include headaches, dizziness, difficulty swallowing, and muscle weakness.
- Surgical intervention may be required to relieve symptoms and restore normal cerebrospinal fluid flow.

Sample Sentences:
1. The infant was diagnosed with Arnold-Chiari deformity shortly after birth.
2. After sustaining a spinal injury, the patient developed Arnold-Chiari deformity.
3. Researchers are studying the genetic factors associated with Arnold-Chiari deformity.

Related Products: Books on Arnold-Chiari Deformity