Topic: Brown-Sequard Syndrome Subject: Medicine Which of the following would not be expected in a right-sided Brown-Séquard syndrome?
A. Right-sided hemi-paresis
B. Right-sided loss of proprioception
C. Left-sided decreased sensitivity to pinprick
D. Left-sided decreased vibration sense
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Correct Answer : D.
Brown-Sequard syndrome (BSS) is a rare neurological condition characterized by a lesion in the spinal cord which results in weakness or paralysis (hemiparaplegia) on one side of the body and a loss of sensation (hemianesthesia) on the opposite side. In addition, loss of proprioception, spastic paralysis, and hyperactive deep tendon reflexes develop ipsilaterally (same side). BSS may be caused by a spinal cord tumor, trauma (such as a puncture wound to the neck or back), ischemia (obstruction of a blood vessel), or infectious or inflammatory diseases such as tuberculosis, or multiple sclerosis. >Right-sided hemi-paresis (choice A), Right-sided loss of proprioception (choice B), and spasticity (choice E) all occur on the same side of the lesion. > Left-sided decreased sensitivity to pinprick (choice C) ,which indicates pain, and loss of temperature sensation would both occur on the contralateral side.