title: Progressive multifocal leukoencephalopathy presenting as a single mass lesion.
abstract: Progressive multifocal leukoencephalopathy (PML) consisting anatomopathologically of multiple foci of white matter demyelination may present both clinically and at CT scanning as a single mass lesion. An additional similar case is reported. As antiviral therapy may prove useful, characteristics of additional examinations including CT scan are described to promote an early diagnosis.
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007968:Leukoencephalopathy, Progressive Multifocal / Q000175:diagnosis* / Q000473:pathology; D008875:Middle Aged; D011877:Radionuclide Imaging