How Efficacious is HRCT Temporal Bone in Determining the Ossicular Erosion in Cases of Safe and Limited Squamous Type CSOM?

  • Jaskaran Singh
  • Bhanu BhardwajEmail author
Original Article


HRCT temporal bone is a very valuable radiological investigation. However its still not widely used by otologists for routine surgeries. Ossicular erosion is often encountered unexpectedly in safe cases of CSOM and in limited squamous type of cases. If preoperative diagnosis of ossicular erosion is made then otologist can preoperatively plan ossicular reconstruction techniques leading to improved results. We conducted a study in 60 patients to evaluate the efficacy of HRCT temporal bone in determining ossicular erosion in cases of CSOM. It was a diagnostic observational study where surgical finding of ossicular erosion was taken as a gold standard. Sensitivity specificity; positive predictive value and negative predictive value of HRCT was calculated in detecting malleus; incus and stapes erosion. P value was calculated. Sensitivity and specificity for malleus erosion was 78.5% and 78.1% respectively. Sensitivity and specificity for incus erosion was 73.1% and 57.8% respectively. Sensitivity and specificity for stapes erosion was 52% and 57.1% respectively. P value was less than 0.05. We concluded that HRCT is a good adjunct for determining the ossicular erosion and its use should be encouraged by the otologist.


HRCT temporal bone Ossicular erosion Efficacy 


Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no competing interests.

Informed Consent

Informed consent was obtained from all individual participants included in the study.


  1. 1.
    Mafee MF, Kumar A, Yannias DA, Valvassori GE, Applebaum EL (1983) CT of the middle ear in evaluation of cholesteatoma and other soft tissue masses comparison with pluridirectional tomography. Radiology 148(2):465–472CrossRefGoogle Scholar
  2. 2.
    Hughes GB (1979) Cholesteatoma and the middle ear cleft. A review of pathogenesis. Am J Otol 1:109–114PubMedGoogle Scholar
  3. 3.
    Beaumont GD (1980) Radiology in management of chronic suppurative otitis media. Australas Radiol 24:238–245CrossRefGoogle Scholar
  4. 4.
    Goycoolea MV (1982) Otitis media: definitions and Pathogenesis. In: Paparella MM, Goycoolea MV (eds.) Clinical problems in otitis media and innovations in surgical otology. Ear Clinics International volume II. Williams & Wilkins, Baltimore, p 154Google Scholar
  5. 5.
    Jackler RK, Dillon WP, Schindler RA (1984) Computed tomography in suppurative ear disease: a correlation of surgical and radiographic findings. Laryngoscope 94:746–752PubMedPubMedCentralGoogle Scholar
  6. 6.
    Swartz JD, Goodman RS, Russell KB et al (1983) High resolution computed tomographyof the middle ear and mastoid. Part II tubotympanic disease. Radiology 148:455–459CrossRefGoogle Scholar
  7. 7.
    Rogha M, Hashemi SM, Mokhtarinejad F, Eshaghian A, Dadgostar A (2014) Comparison of preoperative temporal bone CT with intraoperative findings in patients with cholesteatoma. Iran J Otorhinolaryngol 26:7–12PubMedPubMedCentralGoogle Scholar
  8. 8.
    Garg P, Kulshreshtha P, Motwani G, Mittal MK, Rai AK (2012) Computed tomography in chronic suppurative otitis media: value in surgical planning. Indian J Otolaryngol Head Neck Surg 64(3):225–229CrossRefGoogle Scholar
  9. 9.
    Shah C, Shah P, Shah S (2014) Role of HRCT temporal bone in preoperative evaluation of cholesteatoma. Int J Med Sci Public Health 3(1):69–72CrossRefGoogle Scholar
  10. 10.
    Zhang X, Chen Y, Liu Q, Han Z, Li X (2004) The role of high-resolution CT in the pre-operative assessment of chronic otitis media. Lin Chung Er Bi Yan Hou Ke Za Zhi 18:396–398Google Scholar
  11. 11.
    Chee NW, Tan TY (2001) The value of pre-operative high resolution CT scans in cholesteatoma surgery. Singap Med J 42:155–159Google Scholar
  12. 12.
    Gomma MA, Karim AR, Ghany HSA, Elhiny AA, Sadek AA (2013) Evaluation of temporal bone cholesteatoma and the correlation between high resolution computed tomography and surgical findings. Clin Med Insight Ear Nose Throat 6:21–28Google Scholar
  13. 13.
    Datta G, Mohan C, Mahajan M, Mendiratta V (2014) Correlation of preoperative HRCT findings with surgical findings in unsafe CSOM. Inter Organ Dent Med Sci 13(1):120–125Google Scholar
  14. 14.
    O’Donoghue GM, Bates GJ, Anslow P, Rothera MP (1987) The predictive value of high resolution computerized tomography in chronic suppurative ear disease. Clin Otolaryngol Allied Sci 12:89–96CrossRefGoogle Scholar

Copyright information

© Association of Otolaryngologists of India 2018

Authors and Affiliations

  1. 1.SGRD Institute of Medical Sciences and Research, AmritsarMohaliIndia
  2. 2.SGRD Institute of Medical Sciences and Research, AmritsarAmritsarIndia

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