title: Non-Hodgkin lymphoma of the cranial vault with retrobulbar metastasis mimicking a subacute subdural hematoma: case report.
abstract: Primary skeletal non-Hodgkin lymphoma is rare. The authors report a case of a small lymphocytic B-cell lymphoma of the skull occurring in a 53-year-old man who presented with right-hand apraxia. Initial computed tomography and magnetic resonance imaging revealed a hematoma-mimicking lesion in the left frontoparietal subdural area. A frontotemporoparietal craniectomy and biopsy procedure yielded a diagnosis of small lymphocytic B-cell lymphoma, with a metastatic nodule in the retrobulbar area. Three years after undergoing radiation therapy and surgery, the patient has shown neurological improvement without systemic dissemination of the malignancy. The lesion in this case was misdiagnosed as a subdural hematoma, and shows the importance of including lymphoma in the differential diagnosis of subdural mass lesions.
authors.affiliation: Department of Neurosurgery Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Sang-Hoon
authors.initials: SH
authors.lastname: Yoon
authors.forename: Sun Ha
authors.initials: SH
authors.lastname: Paek
authors.forename: Sung-Hye
authors.initials: SH
authors.lastname: Park
authors.forename: Dong Gyu
authors.initials: DG
authors.lastname: Kim
authors.forename: Hee-Won
authors.initials: HW
authors.lastname: Jung
mesh_terms: D001706:Biopsy; D003399:Craniotomy; D003937:Diagnosis, Differential; D006408:Hematoma, Subdural / Q000175:diagnosis*; D006801:Humans; D016393:Lymphoma, B-Cell / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009918:Orbital Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary*; D012888:Skull Neoplasms / Q000473:pathology*; D014057:Tomography, X-Ray Computed