This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Complications of Chronic Otitis Media, Subject name: ENT
A mastoid CT SCan Axial cross section given below depicts which type of pathological mastoid among given options ? 
Select and explain. 
A. Pneumatized mastoid, B. Diploeic mastoid, C. Sclerotic mastoid, D. Atrophic mastoid
C: Sclerotic mastoid
Answer: C: Sclerotic mastoid 
Explanation: Acellular mastoid along with surrounding tissue destroyed occurs in Sclerotic mastoid Mastoid Cancellous bone: consist of air cells( "honeycomb" ) Largest air cell is mastoid antrum 3 types of mastoid are :- Pneumatized:Mastoid cells are well developed and intervening septa are thin Diploetic: Mastoid consists of marrow spaces and a few air cells Sclerotic or acellular:No air cells mastoid air cells before and after sclerosis