title: Diagnosis in subdural myeloid sarcoma.
abstract: Introduction A 74-year-old man presented to hospital with a headache, thrombocytopaenia and an acute deterioration in cognition on a background of acute monocytic leukaemia in remission. Method This is a case report with computed tomography (CT), magnetic resonance (MR) and histopathology imaging. Results Preoperative CT and limited MR demonstrated a subdural lesion with marked midline shift. Craniotomy performed for evacuation of the presumed subdural haematoma revealed a solid tumour-like lesion. Histopathology identified the presence of a myeloid sarcoma (chloroma). Postoperative MRI with contrast revealed the solid nature of the mass. Conclusion The use of contrast is critical in the assessment of intracranial lesions to distinguish myeloid sarcoma from subdural haematoma in the context of leukaemia and a neurologically deteriorating patient.
authors.affiliation: 1 Brizbrain and Spine, Brisbane, Australia.|2 The Wesley Hospital, Brisbane, Australia.
authors.forename: Alan
authors.initials: A
authors.lastname: Lackey
authors.affiliation: 2 The Wesley Hospital, Brisbane, Australia.
authors.forename: Barbara
authors.initials: B
authors.lastname: Laing
authors.affiliation: 2 The Wesley Hospital, Brisbane, Australia.|3 ICON Cancer Care, Brisbane, Australia.
authors.forename: Andrew
authors.initials: A
authors.lastname: Perkins
authors.affiliation: 1 Brizbrain and Spine, Brisbane, Australia.|2 The Wesley Hospital, Brisbane, Australia.
authors.forename: Michael
authors.initials: M
authors.lastname: Bryant
mesh_terms: D000368:Aged; D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D003287:Contrast Media; D003399:Craniotomy; D003937:Diagnosis, Differential; D006408:Hematoma, Subdural / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D023981:Sarcoma, Myeloid / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media
keywords: Hematoma; acute; leukaemia; magnetic resonance imaging; myeloid; neuroimaging; sarcoma; subdural