External auditory canal osteoma
Last revised by Rania Adel Anan on 26 Sep 2023
Citation, DOI, disclosures and article data
Citation:
Ibrahim D, Anan R, Shaggah M, et al. External auditory canal osteoma. Reference article, Radiopaedia.org (Accessed on 20 Apr 2024) https://doi.org/10.53347/rID-46947
Permalink:
rID:
46947
Article created:
25 Jul 2016,
Dalia Ibrahim ◉
Disclosures:
At the time the article was created Dalia Ibrahim had no recorded disclosures.
View Dalia Ibrahim's current disclosures
Last revised:
26 Sep 2023,
Rania Adel Anan ◉
Disclosures:
At the time the article was last revised Rania Adel Anan had no financial relationships to ineligible companies to disclose.
View Rania Adel Anan's current disclosures
Revisions:
10 times, by
8 contributors -
see full revision history and disclosures
Systems:
Synonyms:
- EAC osteoma
- External ear canal osteoma
External auditory canal osteomas are rare focal pedunculated bony overgrowths of the osseous external auditory canal.
Radiographic features
- solitary pedunculated bony overgrowth of the external auditory canal usually at the bony cartilaginous junction
- unilateral
- large lesions may be associated with earwax, debris or secondary cholesteatoma
Differential diagnosis
- external auditory canal exostoses (surfer's ear): bilateral multiple broad based bony overgrowths
Quiz questions
{"containerId":"expandableQuestionsContainer","displayRelatedArticles":true,"displayNextQuestion":true,"displaySkipQuestion":true,"articleId":46947,"questionManager":null,"mcqUrl":"https://radiopaedia.org/articles/external-auditory-canal-osteoma/questions/1784?lang=us"}
References
- 1. Harnsberger HR, MBBS CMG, Michel MA et-al. Diagnostic Imaging Head and Neck. Lippincott Williams & Wilkins. ISBN:1931884781. Read it at Google Books - Find it at Amazon
- 2. Sente M. External auditory canal osteoma. Srp Arh Celok Lek. 2009;137 (1-2): 73-6. Pubmed citation
- 3. Graham MD. Osteomas and exostoses of the external auditory canal. A clinical, histopathologic and scanning electron microscopic study. Ann. Otol. Rhinol. Laryngol. 1979;88 (4 Pt 1): 566-72. Pubmed citation
Incoming Links
Cases:
Multiple choice questions:
Unable to process the form. Check for errors and try again.