Related Experiment Video
Updated: Dec 30, 2025

04:04
Lateral Molar Approach-Driven Transoral Endoscopic Procedure for Benign Infratemporal Fossa Tumor Resection
Published on: August 15, 2025
316
Retromastoid osteoma-a rare case report.
Edmund Wooi Keat Tan1, Jason Bae Barco1, Mutee Ur Rehman1
1Department of Surgery, Sengkang General Hospital, Pte Ltd, Singapore.
Journal of Surgical Case Reports
|January 25, 2020
Summary
Osteomas are rare, slow-growing bone tumors. This case highlights a retromastoid osteoma in a female patient, diagnosed via CT scan, emphasizing the need for genetic screening for associated syndromes.
Area of Science:
- Otolaryngology
- Neurosurgery
- Oncology
Background:
- Osteomas are benign, slow-growing bone tumors, typically asymptomatic.
- Temporal bone osteomas are rare, with an incidence of 0.1-1%.
Observation:
- A 40-year-old female presented with a 9-year history of a slow-growing swelling behind her right ear.
- The swelling was identified as a retromastoid osteoma.
Findings:
- Diagnosis was confirmed using non-contrast computed tomography (CT) of the skull.
- The osteoma was located in the retromastoid region of the temporal bone.
Implications:
- Treatment for temporal bone osteomas is typically reserved for symptomatic or cosmetically concerning cases.
- Screening for familial adenomatous polyposis (FAP) and Gardner's syndrome is recommended due to potential associations.

