Huge osteoma in the frontoparietal bone caused by trauma from 18 years ago: a case report.

BACKGROUND: Osteomas are asymptomatic, benign tumors and are diagnosed accidentally by radiological investigations conducted for other reasons. In some cases, they may cause aesthetic or functional symptoms by affecting nearby organs. The cause of osteoma is still dialectical. Many theories suggest that inflammation, trauma, or congenital causes are behind its formation. In our case, the patient presented with a symptomatic and huge osteoma in the frontoparietal bone caused by trauma from 18 years ago. CASE PRESENTATION: A 24-year-old Syrian woman came to our hospital complaining of headaches, syncope episodes, blurred vision, and tumor formation in the frontoparietal region. The medical and surgical histories of the patient revealed appendectomy and head trauma when she was 6 years old in a traffic accident. Radiological investigations showed thickness in the space between the two bone plates in the left frontoparietal region, which reached the orbital roof without cortical destruction or periosteum reaction; the tumor size was 5 cm × 5 cm. A surgical excision was indicated. Under general anesthesia, the surgery was done for the tumor excision. The histopathology examination emphasized the diagnosis of osteoma. The follow-up for 7 months was uneventful. CONCLUSION: This paper highlights the importance of focusing on the medical history of patients with osteoma in an attempt to explain the reasons for its occurrence. It stresses the need to put osteoma within the differential diagnoses of skull tumors.

Exophthalmos and hemiheadache caused by osteoma in the greater wing of sphenoid bone: an extremely rare case report.

Osteoma is the most common benign tumor of the nose and paranasal sinuses. It is usually asymptomatic and diagnosed accidentally. In our case, the tumor formed in an unusual location and led to unexpected symptoms, which created a big challenge in diagnosis and treatment. Case presentation: A 53-year-old woman complained of hemiheadache, exophthalmos in the right eye, and limitation in lateral eye movements progressing to diplopia in the past 2 months. The physical examination of the rest systems was unremarkable. The radiological investigations revealed a hyperdense lesion arising from the right greater wing of the sphenoid bone and compressed on the orbit's components and eye muscles, which caused proptosis. The radiological findings suggested osteoma and the tumor was excised by craniotomy. The patient gets rid of the symptoms and the follow-up for 6 months was uneventful. Clinical discussion: Even hemiheadache, exophthalmos, limitation in eye movements, and diplopia are unfamiliar findings in osteoma, they may be its manifestations. Also, MRI is used as a diagnostic method with computed tomography scan in intracranial osteoma. These cases are treated by craniotomy. Conclusions: Even though osteoma is a benign tumor, it may form in unusual locations and cause unexpected symptoms. So, it should be a differential diagnosis in skull bony tumors. Also, it should be treated when exists in sensitive places to avoid irreversible outcomes.