[Malignant endovascular large-cell lymphoma: disclosing central nervous system involvement confirmed by cerebral biopsy]. / Lymphome malin endovasculaire à grandes cellules: atteinte révélatrice du systéme nerveux central confirmée par la biopsie cérébrale.

Intravascular malignant lymphomatosis (IML) is characterised by proliferation of tumoral cells within small vessels. Angiotropic large cell lymphoma commonly affects the central nervous system and the skin, although any organ may be involved. Few cases are diagnosed ante mortem. We report a new case of IML in a 62-year-old woman who presented with the main clinical features of central nervous system involvement: cerebrovascular events, epileptic seizures, subacute dementia and spinal cord syndrome. Cranial magnetic resonance imaging demonstrated increased periventricular signal on T2-weighted images. Diagnosis was established by brain biopsy. Despite corticosteroid and radiation therapy no improvement occurred and the patient died 14 months after the onset of the first symptoms.

[Systemic manifestations of hemorrhagic rectocolitis: apropos of a case of hemorrhagic rectocolitis associated with multiple sclerosis]. / Manifestations systémiques de la rectocolite hémorragique: à propos d'un cas d'une rectocolite hémorragique associée à une sclérose en plaques.

Extra-intestinal manifestations of inflammatory bowel diseases are frequent and numerous. We report a case of ulcerative colitis associated with multiple sclerosis, ankylosing spondylitis and pyoderma gangrenosum. This observation shows the rare association of ulcerative colitis-multiple sclerosis, and extra-intestinal manifestations of inflammatory colitis are discussed.

[Auditory evoked potentials and tumor of the cerebellopontine angle]. / Potentiels évoqués auditifs et tumeur de l'angle ponto-cérébelleux.

The technique of auditory evoked potentials evaluates the auditory pathways along the vestibulocochlear nerve and in the brainstem. The authors stress the importance of this examination in the diagnosis of tumours of the cerebellopontine angle and they discuss its place in relation to radiological investigations.