This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Otosclerosis, Subject name: ENT
Endolymphatic decompression is done in: 
Select and explain. 
A. Tinnitus, B. Acoustic neuroma, C. Meniere's disease, D. Perilymph fistula
C: Meniere's disease
Answer: C: Meniere's disease 
Explanation: (c) Meniere's disease(Ref. Cummings, 6th ed., 2559)Meniere's disease being characterised by endolymphatic hydrops so here endolymphatic sac decompression is done when the medical management fails.Tinnitus is treated as per the underlying cause.Treatment modality of Acoustic neuroma is surgical excision.Perilymph fistula is repaired by grafting the fistula.