Two Cases of Salivary Gland Choristoma of the Middle Ear.
- Author:
Sun O CHANG
1
;
Byung Yoon CHOI
;
Chang Hee KIM
;
Chong Sun KIM
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul, Korea. suno@plaza.snu.ac.kr
- Publication Type:Case Report
- Keywords:
Choristoma;
Middle ear;
Salivary glands
- MeSH:
Biopsy;
Choristoma*;
Diagnosis, Differential;
Ear, Middle*;
Facial Nerve;
Head;
Hearing Loss, Conductive;
Neck;
Salivary Glands*
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
2004;47(8):798-801
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Salivary gland choristoma (ectopic or heterotopic salivary gland tissue) is a rare condition that occurs in various locations within the head and neck regions. A choristoma is a non-neoplastic proliferation of histologically normal tissue that forms at an abnormal site. It appears to be a developmental abnormality and may be associated with abnormalities of adjacent structures. Salivary gland choristoma in the middle ear usually occurs with unilateral conductive hearing loss and requires a differential diagnosis from other mass lesions in the middle ear cavity. Because the lesions commonly involve the facial nerve, intraoperative facial nerve monitoring is helpful for allowing safe biopsy without facial nerve damage. We present two cases of salivary gland choristoma in the middle ear with a review of the literature.
