Koerner's septum

Koerner's septum is an anatomic boundary in the temporal bone formed by the petrosquamous suture between the petrous and squamosal portions of the mastoid air cells, at the anatomic level of the antrum.[1] Along with the middle ear ossicles, it is usually eroded in middle ear cholesteatomas.[2] Superiorly, this continues as the petrosquamous suture, a normal anatomic structure that can be mistaken for fractures on temporal bone CT.[3] It is surgically important as it may cause difficulty in locating the antrum and the deeper cells and thus may lead to incomplete removal of disease at mastoidectomy.[4]

See also

References
  1. Göksu, N; Kemaloğlu, YK; Köybaşioğlu, A; Ileri, F; Ozbilen, S; Akyildiz, N (May 1997). "Clinical importance of the Korner's septum". The American Journal of Otology. 18 (3): 304–6. PMID 9149822.
  2. Gaurano, JL; Joharjy, IA (2004). "Middle ear cholesteatoma: characteristic CT findings in 64 patients". Annals of Saudi Medicine. 24 (6): 442–7. PMID 15646162.
  3. Kwong, Y; Yu, D; Shah, J (August 2012). "Fracture mimics on temporal bone CT: a guide for the radiologist". AJR. American Journal of Roentgenology. 199 (2): 428–34. doi:10.2214/AJR.11.8012. PMID 22826408.
  4. {{Körner's Septum (Petrosquamosal Lamina) and Chronic Ear Disease E Ozer et al. Surg Radiol Anat. 2004 Apr.}}
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