title: Primary parietal myeloid sarcoma.
abstract: Intracranial occurrence of myeloid sarcoma without any evidence of systemic hematological disorder is uncommon. We report the case of a 17-year-old girl who presented with features of raised intracranial pressure and paraparesis of short duration. Magnetic resonance imaging showed a 6 cm bilateral middle 1/3(rd) para sagittal contrast enhancing extra-axial mass with mass effect. The tumor was subtotally excised. Histology and immunohistochemistry proved to be a myelosarcoma. Further evaluation done with peripheral blood smear and bone marrow biopsy ruled out the possibility of leukemia or myeloproliferative disorder. She was referred for chemotherapy and clinically showed improvement after 6 months of follow-up. Authors report a case of intracranial myelosarcoma which closely resembled meningioma both radiologically and in intraoperative morphological appearance. Authors discuss in detail the radiological and histological features of myelosarcoma along with differential diagnoses and treatment options.
authors.affiliation: Department of Neurosurgery, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.
authors.forename: Laxminadh
authors.initials: L
authors.lastname: Sivaraju
authors.affiliation: Department of Neurosurgery, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.
authors.forename: Dilip
authors.initials: D
authors.lastname: Mohan
authors.affiliation: Department of Pathology, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.
authors.forename: Nandita
authors.initials: N
authors.lastname: Ghosal
authors.affiliation: Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
authors.forename: Bevinahalli N
authors.initials: BN
authors.lastname: Nandeesh
authors.affiliation: Department of Neurosurgery, Sri Sathya Sai Institute of Higher Medical Sciences, Bengaluru, Karnataka, India.
authors.forename: Alangar S
authors.initials: AS
authors.lastname: Hegde
keywords: Immunohistochemistry; intracranial; myeloid sarcoma; parietal