title: Extra-axial ependymoma of the cerebral convexity: A very rare intracranial adult tumor.
abstract: Background Ependymomas are rare adult tumors that originate from the ventricular system or the ependymal surface of the central canal. Extra-axial supratentorial ependymomas are extremely rare, and only five cases have been reported to date in the English literature. Case presentation A 46-year-old previously healthy male presented with a gradual painless loss of vision in the right eye. Cerebral MRI showed a right parietal-occipital lesion resembling an atypical meningioma. Surgical resection was performed, and immunohistochemical staining results concluded that it was a very uncommon location of a grade 3 ependymoma. Favorable outcome was observed one year after completion of postoperative radiotherapy. Conclusion Clinical and imaging aspects are misleading in rare brain tumors, and immunohistochemistry is essential to re-address diagnosis.
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Soufiane
authors.initials: S
authors.lastname: Berhili
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Abdellah
authors.initials: A
authors.lastname: Aissa
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Selma
authors.initials: S
authors.lastname: Kadiri
authors.affiliation: 2 Cytopathology Laboratory, Ibn Sina Specialty Hospital, Mohamed V University in Rabat, Morocco.
authors.forename: Nadia
authors.initials: N
authors.lastname: Cherradi
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Sanae
authors.initials: S
authors.lastname: El Majjaoui
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Hanan
authors.initials: H
authors.lastname: El Kacemi
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Tayeb
authors.initials: T
authors.lastname: Kebdani
authors.affiliation: 1 Radiotherapy Department, National Oncology Institute, Mohamed V University in Rabat, Morocco.
authors.forename: Noureddine
authors.initials: N
authors.lastname: Benjaafar
mesh_terms: D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D003399:Craniotomy; D003937:Diagnosis, Differential; D004806:Ependymoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000532:radiotherapy / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D060787:Neoplasm Grading; D020266:Radiotherapy, Conformal
keywords: Ependymoma; MRI; extra-axial; immunohistochemistry; radiotherapy