title: Gliomatosis of the brain and spinal cord masquerading as infective lesions.
abstract: BACKGROUND
  Gliomatosis of the brain or spinal cord is an infiltrating glial neoplasm that shows widespread invasion of the central nervous system with relative sparing of the underlying cytoarchitecture. Acceptance of the idea that the condition represents a distinct entity remains controversial in the absence of conclusive pathogenetic data. The clinico-pathological problems and difficulties in the ante-mortem diagnosis as well as the clinical and pathological similarities to infective lesions are evaluated.
  
  
  RESULTS
  Three cases of cerebral and spinal gliomatosis are presented that clinically mimicked infective lesions and were diagnosed and treated as such. The correct diagnosis in each case was only made at post-mortem examination. The ante-mortem diagnosis of this rare tumor remains difficult owing to poor correlation of clinical, neuroradiological, and neuropathological findings.
  
  
  CONCLUSIONS
  Gliomatosis of the brain and spinal cord may simulate infective lesions owing to difficulty in ante-mortem diagnosis because of vagueness of physical, radiological, and pathological findings. It is a diagnostic pitfall particularly in our setting where there is a high incidence of HIV/AIDS and patients often present with opportunistic infections such as mycobacterial, fungal, and/or viral infections, which show an atypical clinical picture and radiological findings. Multifocal neurologic deficit with noncontrast enhancing lesions that show diffuse contiguous involvement with overall preservation of the spinal or cerebral architecture and do not respond to infective treatment could suggest a diagnosis of gliomatosis cerebri.
authors.affiliation: Department of Anatomical Pathology, School of Pathology, South African Institute for Medical Research, Johannesburg, South Africa.
authors.forename: George
authors.initials: G
authors.lastname: Meligonis
authors.forename: Monalisa
authors.initials: M
authors.lastname: Sur
authors.forename: John
authors.initials: J
authors.lastname: Ouma
authors.forename: Wayne
authors.initials: W
authors.lastname: Grayson
authors.forename: Victor J R
authors.initials: VJ
authors.lastname: Farrell
mesh_terms: D000293:Adolescent; D000328:Adult; D001932:Brain Neoplasms / Q000473:pathology*; D002494:Central Nervous System Infections / Q000473:pathology*; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D018302:Neoplasms, Neuroepithelial / Q000473:pathology*; D013120:Spinal Cord Neoplasms / Q000473:pathology*