This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain Imaging: Anatomy, Trauma, and Tumors, Subject name: Radiology
Dawson's fingers on MRI are diagnostic of - 
Select and explain. 
A. Hyperparathyrodism, B. Psoriatic arthropathy, C. Multiple sclerosis, D. Multiple exostosis
C: Multiple sclerosis
Answer: C: Multiple sclerosis 
Explanation: Ans. is 'c' i.e., Multiple sclerosis o Dawson fingers are a radiographic feature depicting demyelinating plaques through the corpus callosum, arranged at right angles along medullary veins (callososeptal location).o They are a relatively specific sign for multiple sclerosis (MS), which presents as T2 hyperintensities)