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Contralateral Ear in Patients with Chronic Otitis Media
Kourosh Eftekharian1,2, Ali Eftekharian1,3, Farhad Mokhtarinejad1,3
1Clinical research development unit of Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Summary
Bilateral chronic otitis media (COM) is more common in simple tympanic membrane perforations (PTP) than cholesteatomas. Large perforations in one ear do not predict issues in the other ear.
Area of Science:
- Otolaryngology
- Otorhinolaryngology
- Surgical Pathology
Background:
- Chronic otitis media (COM) is a persistent middle ear infection.
- Surgical intervention is common for COM, necessitating evaluation of both ears.
- Understanding contralateral ear involvement aids in comprehensive patient management.
Purpose of the Study:
- To assess the prevalence and nature of abnormalities in the contralateral ear of patients undergoing surgery for COM.
- To compare contralateral ear findings between cholesteatoma and non-cholesteatomatous COM (pars tensa perforation - PTP).
Main Methods:
- A cross-sectional study was conducted across three tertiary hospitals.
- 228 patients undergoing COM surgery were examined for contralateral ear abnormalities.
- Oto-microscopic examination was used to identify pathologies.
Main Results:
- Nearly 50% of patients had normal contralateral ears.
- Pars tensa perforation (PTP) was more common in females, cholesteatoma in males.
- Cholesteatoma patients had significantly fewer contralateral perforations (67.4% normal) compared to PTP patients (45.3% normal).
- Large perforations (>50%) were frequent in the PTP group's contralateral ears.
Conclusions:
- Bilateral involvement is more characteristic of PTP than cholesteatoma.
- Tympanic membrane perforation often presents as a large defect.
- The size of perforation in one ear does not reliably predict contralateral ear pathology.
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