External Ear Canal Adenoid Cystic Carcinoma
Abstract
Primary malignancy involving the external auditory canal is rare, with 80% of them being squamous cell carcinoma while 5% of them are adenoid cystic carcinoma. These tumours are known for its high rates of recurrence, significant morbidities from surgical management and adjuvant radiotherapy, as well as eventual death of the patient. We describe a case of an elderly female with right ear canal mass who presented with recurrent right ear pain. After the tumour was excised, it was confirmed to be adenoid cystic carcinoma. This case highlights the rarity of the entity of adenoid cystic carcinomas involving the external auditory canal; and how its subtle initial presentation can be mistaken to be a clinically benign condition.References
Kokemueller H, Eckardt A, Brachvogel P et al. Adenoid cystic carcinoma of the head and neck—a 20 years experience. International Journal of Oral and Maxillofacial Surgery. 2004;33:25-31.
Berdal P, Besche Ad, Mylius E. Cylindroma of salivary glands a report of 80 cases. Acta Oto-Laryngologica. 1970;69:170-3.
Szanto PA, Luna MA, Tortoledo ME et al. Histologic grading of adenoid cystic carcinoma of the salivary glands. Cancer. 1984;54:1062-9.
Zainor S, Mamat H, Saad SM et al. Adenoid cystic carcinoma of external auditory canal: A case report. Egyptian Journal of Ear, Nose, Throat and Allied Sciences. 2013;14:41-4.
Spiro RH. Salivary neoplasms: Overview of a 35‐year experience with 2,807 patients. Head & Neck. 1986;8:177-84.
Perzin KH, Gullane P, Conley J. Adenoid cystic carcinoma involving the external auditory canal a clinicopathologic study of 16 cases. Cancer. 1982;50:2873-83.
Dong F, Gidley PW, Ho T et al. Adenoid cystic carcinoma of the external auditory canal. The Laryngoscope. 2008;118:1591-6.
Waldron CA, El-Mofty SK, Gnepp DR. Tumors of the intraoral minor salivary glands: a demographic and histologic study of 426 cases. Oral Surgery, Oral Medicine, Oral Pathology. 1988;66:323-33.
Bhatt MC. A rare case of adenoid cystic carcinoma of ceruminous gland of EAC. Otolaryngology Online Journal.2016;6:101.
Silverman DA, Carlson TP, Khuntia D et al. Role for postoperative radiation therapy in adenoid cystic carcinoma of the head and neck. The Laryngoscope. 2004;114:1194-9.
