Osteomas; Exostoses; Tumor - ear; Cysts - ear; Ear cysts; Ear tumors; Bony tumor of the ear canal; Furuncles DefinitionBenign ear cysts are lumps or growths in the ear. They are not cancerous. CausesSebaceous cysts are the most common type of cysts seen in the ear. These sack-like lumps are made up of dead skin cells and oils produced by oil glands in the skin. Places they are likely to be found include:
The exact cause of the problem is unknown. Cysts may occur when oils are produced in a skin gland faster than they can be released from the gland. They can also occur if the oil gland opening has become blocked and a cyst forms under the skin. Benign bony tumors of the ear canal (exostoses and osteomas) are caused by excess growth of bone. Repeated exposure to cold water may increase the risk for benign bony tumors of the ear canal. SymptomsThe symptoms of cysts include:
The symptoms of benign tumors include:
Note: There may be no symptoms. Exams and TestsBenign cysts and tumors are most often found during a routine ear exam. This type of exam may include hearing tests (audiometry) and middle ear testing (tympanometry). When looking into the ear, the health care provider may see cysts or benign tumors in the ear canal. Sometimes, a CT scan is needed. This disease may also affect the results of the following tests: TreatmentTreatment is not needed if the cyst does not cause pain or affect hearing. If a cyst becomes painful, it may be infected. Treatment may include antibiotics or removal of the cyst. Benign bony tumors may increase in size over time. Surgery may be needed if a benign tumor is painful, interferes with hearing, or leads to frequent ear infections. Outlook (Prognosis)Benign ear cysts and tumors are slow-growing. They may sometimes shrink or may disappear on their own. Possible ComplicationsComplications may include:
When to Contact a Medical ProfessionalContact your provider if you have:
ReferencesGold L, Williams TP. Odontogenic tumors: surgical pathology and management. In: Fonseca RJ, ed. Oral and Maxillofacial Surgery. 3rd ed. Philadelphia, PA: Elsevier; 2018:chap 18. Hargreaves M. Osteomas and exostoses of the external auditory canal. In: Myers EN, Snyderman CH, eds. Operative Otolaryngology Head and Neck Surgery. 3rd ed. Philadelphia, PA: Elsevier; 2018:chap 127. Nicolai P, Mattavelli D, Castelnuovo P. Benign tumors of the sinonasal tract. In: Flint PW, Francis HW, Haughey BH, et al, eds. Cummings Otolaryngology: Head and Neck Surgery. 7th ed. Philadelphia, PA: Elsevier; 2021:chap 50. | |
| |
Review Date: 5/2/2024 Reviewed By: Josef Shargorodsky, MD, MPH, Johns Hopkins University School of Medicine, Baltimore, MD. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited. | |
| |
Ear anatomy
