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An Isolated Laminar Osteoma Arising in the Maxillary Sinus
Takaharu Taketomi1,2, Kouhei Imayama3, Ken Nakamura2
1Department of Dental and Oral Surgery, St. Mary's Hospital, Kurume, Fukuoka, Japan.
The American Journal of Case Reports
|March 27, 2023
Summary
A rare, free osteoma in the maxillary sinus was surgically removed. This benign bone tumor, potentially linked to dental issues, did not recur after five years.
Area of Science:
- Oral and Maxillofacial Surgery
- Otolaryngology
- Pathology
Background:
- Osteomas are benign bone tumors, most commonly found in the mandible.
- Maxillary sinus osteomas are rare, and free-floating osteomas within the sinus are exceptionally uncommon.
- Symptoms arise from obstruction or invasion of adjacent structures.
Observation:
- A 52-year-old man presented with a radiopaque mass in the right maxillary sinus.
- Computed tomography revealed a 2.7x2.3 cm oval mass, free-floating within the sinus without associated sinusitis.
- Histopathology confirmed a laminar osteoma composed of layered compact bone.
Findings:
- An isolated, free osteoma was successfully excised from the maxillary sinus using the modified Caldwell-Luc approach.
- The osteoma was histologically identified as layered compact bone covered by sinus membrane.
- No recurrence was observed five years post-surgery.
Implications:
- This case highlights the possibility of free osteomas within the maxillary sinus, a rare clinical presentation.
- Surgical excision via the modified Caldwell-Luc method is an effective treatment.
- Odontogenic infection from apical periodontitis is a potential cause for such free osteomas.
