Biomedical subjects

Mohamed Boucetta

Publications and source records attributed to Mohamed Boucetta.

4 recordsLinked to original sources

PubMed2004

Benign fronto-orbital osteoblastoma arising from the orbital roof: case report and literature review.

BACKGROUND: Osteoblastoma is an uncommon benign osteogenic neoplasm that rarely involves the orbit. Intracranial and intraorbital extension causing neurologic and ophthalmologic symptoms and signs is very unusual. We report the case of an osteoblastoma of the orbital cavity with ethmoidal and anterior cranial fossa extension presenting as unilateral proptosis. Manifestations and management of this rare fronto-orbital lesion are discussed, and the relevant literature is reviewed. CASE DESCRIPTION: This 22-year-old man experienced a 3-month history of progressive left proptosis without neurologic symptoms. Computed tomography and magnetic resonance imaging scans demonstrated a bony mass involving the roof of the left orbit and extending laterally to the adjacent ethmoid cells and upward to the lower part of the homolateral frontal convexity without parenchymal abnormality. A presumptive diagnosis of osteoma was considered. A left fronto-orbital craniotomy was performed. At surgery, the tumor was well circumscribed by a sclerotic margin. It was granular with bony spicules, destroying the orbital roof and involving the orbital cavity, ethmoidal cells, and anterior cranial fossa. The lesion was totally removed, and the anterior cranial base reconstructed. The histologic features were typical of benign osteoblastoma. After a follow-up period of 12 months, the patient has remained well without evidence of recurrence. CONCLUSION: Osteoblastoma should be considered in the differential diagnosis with other fronto-orbital bone-forming lesions. Although generally regarded as benign, a complete resection is recommended to prevent the possibility of postoperative recurrence and malignant transformation. Twelve previously reported cases were also reviewed.

Adult↗

PubMed2003

Intramedullary cavernous angioma. Two case-reports.

Intramedullary cavernous angiomas are extremely rare. We retrospectively reviewed two cases in a 24-year-old man and 40-year-old woman. T2-weighted magnetic resonance images showed the cavernoma at the cervical and lower thoracic spine, respectively. The patient with cervical involvement also had an asymptomatic cavernoma in the cerebellum. In both patients, the outcome was favorable after complete surgical removal of the lesion.

Adult↗

PubMed2002

Thoracic spinal cord compression by ligamentum flavum ossifications.

Ossification of the ligamentum flavum is common in Japan but rare in Western countries. Myelopathy of variable severity is a possible complication. Extension of the lesions over several levels at the thoracic spine is exceedingly rare. We report a new case in a 50-year-old man who had slowly progressive spinal cord compression with a sensory level at the navel. Computed tomography (CT) and magnetic resonance imaging (MRI) of the thoracic spine showed calcium-density masses that were in contact with the neural arches and bulged into the spinal canal at T5/T6, T7/T8, T9/T10, and T10/T11. Laboratory test findings were unremarkable. Surgical decompression by laminectomy and foraminotomy was followed by a favorable outcome. Histology showed extensive areas of bone metaplasia associated with calcific deposits. The diagnosis, treatment, and possible etiologies of this rare condition are discussed based on a literature review.

Humans↗

PubMed2002

Intracranial trigeminal neuroma involving the infratemporal fossa: case report and review of the literature.

OBJECTIVE AND IMPORTANCE: Intracranial trigeminal neuroma extending extracranially is not a common finding. We report the case of a patient with a right cystic trigeminal neuroma arising in the middle temporal fossa and infratemporal areas. The clinical, radiological, and intraoperative features of these unusual lesions are discussed, and the relevant literature is reviewed. CLINICAL PRESENTATION: A 35-year-old woman presented with a 4-year history of right serous otitis media associated with recent right facial paresthesia. A neurological examination revealed hypesthesia in the mandibular division of the right trigeminal nerve. Computed tomographic and magnetic resonance imaging scans demonstrated a 6 x 6 x 4-cm well-enhancing cystic mass arising from the middle temporal fossa and extending extracranially to the infratemporal fossa through the enlarged foramen ovale. INTERVENTION: The tumor was extradural and originated from the right mandibular nerve. It was subtotally removed via a subtemporal-intradural and extradural approach. A pathological examination revealed a cystic neuroma. The patient has remained well during 12 months of follow-up, and no evidence of recurrence has been noted on magnetic resonance imaging studies. CONCLUSION: Unilateral serous otitis media by obstruction of the eustachian tube is a rare initial manifestation of trigeminal neuroma. We emphasize the benefit of neuroradiological examinations (both computed tomographic scanning and magnetic resonance imaging), which provided the clearest preoperative localization of this large intra- and extracranial tumor. A combined frontotemporal and infratemporal fossa approach is preferred, considering the difficulty of surgical removal. The prognosis for most patients was good. Twenty-five previously reported cases were also reviewed.

Adult↗