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Table 2 MRI findings at diagnosis of PML

From: Predictors of survival and functional outcomes in natalizumab-associated progressive multifocal leukoencephalopathy

PML extension at diagnosis

All (N = 296)

Survivors (n = 223)

Nonsurvivors (n = 73)

Survival (%)

Unilobar, n (%)a

115 (39)

91 (41)

24 (33)

79

Widespread, n (%)b

108 (36)

71 (32)

37 (51)

66

  1. aUnilobar lesions were confined to one lobe
  2. bWidespread lesions involved two or more noncontiguous lobes and/or lesions present in both hemispheres
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