External auditory canal osteoma
Hearing loss in left ear. Hard swelling in left external auditory canal.
Loading Stack -
0 images remaining
Bony density lesion attached to the anterior wall of the left external auditory canal through a stalk and almost obliterating the ear canal. Soft tissue seen filling the left external ear.
External auditory canal osteoma is a slow growing benign neoplasm involving the temporal bone comprising of discrete and pedunculated bone lesion arising along the tympano-squamous suture 1.
They need to be differentiated from exostoses of external auditory canal, which are often bilateral, bony elevations involving the tympanic bone 2.
- 1. Sente M. External auditory canal osteoma. Srp Arh Celok Lek. 2009;137 (1-2): 73-6. Pubmed citation
- 2. 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