Spina bifida occulta is most commonly located in which region of the spine?

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Prepare for your Neural Tube Defects Myelomeningocele/Spina Bifida test with detailed flashcards and multiple-choice questions. Each query is supplemented with hints and explanations. Ace your exam with confidence!

Multiple Choice

Spina bifida occulta is most commonly located in which region of the spine?

Explanation:
Spina bifida occulta is a mild defect where the posterior parts of a vertebra fail to fuse, but there’s no herniation of the spinal cord or meninges. Because it involves the vertebral arches, it most often shows up in the lower back, where these arches fuse later in development—the lumbar and sacral regions. The thoracic and cervical regions are less commonly affected, and the brainstem isn’t part of the spine, so that location doesn’t fit. Often this condition is asymptomatic and found incidentally, sometimes with a subtle skin marker over the lower back. Therefore, the lumbar or sacral region is the best answer.

Spina bifida occulta is a mild defect where the posterior parts of a vertebra fail to fuse, but there’s no herniation of the spinal cord or meninges. Because it involves the vertebral arches, it most often shows up in the lower back, where these arches fuse later in development—the lumbar and sacral regions. The thoracic and cervical regions are less commonly affected, and the brainstem isn’t part of the spine, so that location doesn’t fit. Often this condition is asymptomatic and found incidentally, sometimes with a subtle skin marker over the lower back. Therefore, the lumbar or sacral region is the best answer.

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