MM2-cortical-type sporadic Creutzfeldt-Jakob disease with early stage cerebral cortical pathology presenting with a rapidly progressive clinical course

Yoshiki Niimi, Yasushi Iwasaki, Toshitaka Umemura, Fumiaki Tanaka, Mari Yoshida, Yoshio Hashizume, Tetsuyuki Kitamoto, Mikio Hirayama, Gen Sobue

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8 Citations (Scopus)

Abstract

We report the case of a 67-year-old man with MM2-cortical-type sporadic Creutzfeldt-Jakob disease (sCJD) with a rapidly progressive clinical course of 5 months. Initial symptoms were progressive memory disturbance and dementia. MRI revealed high signal-intensity lesions on diffusion-weighted images in the bilateral frontal and occipital cortices. Myoclonus and periodic sharp-wave complexes on the electroencephalogram were observed in the early disease stage. The clinical diagnosis was typical sCJD. Neuropathologic examination at autopsy showed widespread, characteristic cerebral neocortical involvement with large confluent vacuole-type spongiform change. Spongiform degeneration was also evident in the striatum and medial thalamus. In the cerebellar cortex, slight depletion of Purkinje neurons was evident without spongiform change in the molecular layer or apparent neuron loss in the granule cell layer. The inferior olivary nucleus showed slight hypertrophic astrocytosis without neuron loss. Prion protein (PrP) immunostaining showed widespread, characteristic perivacuolar-type PrP deposits with irregular plaque-like PrP deposits in the cerebral neocortex, striatum and medial thalamus. We believe this patient showed early-stage cerebral cortical pathology of MM2-cortical-type sCJD, which may provide clues regarding the pathologic progression of this rare sCJD subtype. Although MM2-cortical-type sCJD generally shows slow progression without myoclonus or periodic sharp-wave complexes, the present patient showed a rapidly progressive clinical course similar to that of MM1-type sCJD.

Original languageEnglish
Pages (from-to)645-651
Number of pages7
JournalNeuropathology
Volume28
Issue number6
DOIs
Publication statusPublished - 01-12-2008

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Clinical Neurology

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