This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic Nervous System Disorders, Subject name: Medicine
Early loss of bladder control is seen in- 
Select and explain. 
A. Conus medullaris, B. Cauda equina, C. Gullain barre syndrome, D. Amyotrophic lateral sclerosis
A: Conus medullaris
Answer: A: Conus medullaris 
Explanation: Ans. is 'a' i.e., Conus medullariso Loss of bladder control is an early and marked feature of conus medullaris.Bladder involvement||||Conus medullarisCauda equinaGuillain Barre svndromeAMLSo Presen early in the course of disease# Over flow urinary incontinence, fecal Incontinenceo Tends to presents late in the course of the disease# Urinary incontinenceo Bladder involvement uncommon, if involved only, it suggests other diagnostic possibilitieso Bladder, bowel preserved even up to late stages