Acquired attic cholesteatoma characteristically originates in which space, bounded by the Shrapnell membrane laterally and the neck of the malleus medially?
- A Prussak's space ✓
- B Sinus tympani
- C Facial recess
- D Hypotympanum
Correct answer: A. Prussak's space
Explanation
Prussak's space lies between the relaxed portion of the tympanic membrane (Shrapnell membrane) laterally and the neck of the malleus medially, and it is the site where retraction pocket cholesteatoma of the pars flaccida first accumulates keratin. The sinus tympani and facial recess are posterior mesotympanic recesses relevant to sinus cholesteatoma and surgical access respectively, while the hypotympanum is the floor of the middle ear below the tympanic annulus.
Reference: Gray's Anatomy, 42nd ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.