This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Lighthouse sign is seen in 
Select and explain. 
A. Stage of suppuration, B. Stage of hyperaemia, C. Stage of resolution, D. Stage of pre-suppuration
A: Stage of suppuration
Answer: A: Stage of suppuration 
Explanation: Lighthouse sign is seen in Stage of suppuration of AOMStages of AOM-1. Stage of hyperemia/Congestion- Cawheel appearance of TM2. Stage of exudation/Pre suppuration3. Stage of suppuration- Lighthouse sign (Pinpoint perforation)4. Stage of resolution/complicationsRef: Hazarika; 3rd ed; Pg 149