Granulomatous angiitis of the CNS associated with Hodgkin lymphoma

Radiologic and histopathologic findings of the CNS lesions

(A, B) Axial and coronal postgadolinium T1-weighted imaging demonstrates extensive hemispheric and focal cerebellar abnormalities with a perivascular pattern of enhancement; (C) MRI perfusion imaging demonstrates decreased cerebral blood flow in the white matter; (D) hematoxylin & eosin section demonstrates necrotizing granulomatous angiitis.