This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Prussak's space is seen in ? 
Select and explain. 
A. Epitympanum, B. Hypotympanum, C. Mesotympanum, D. Ear Canal
A: Epitympanum
Answer: A: Epitympanum 
Explanation: Ans. is 'a' i.e., EpitympanumPrussak's space is a small space between the shrapnel's membrane/pars flaccida laterally. neck of malleus medially, sho process of malleus below and lateral process of malleus above.Prussak's space communicates with epitympanum through a posterior gap.Prussak's space is impoant because it is a site for pars flaccida acquired cholesteatoma formation.