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  • Title: Heidenhain Variant of Sporadic Creutzfeldt-Jakob Disease with a Variety of Visual Symptoms: A Case Report with Autopsy Study.
    Author: Hisata Y, Yamashita S, Tago M, Yoshimura M, Nakashima T, Nishi TM, Oda Y, Honda H, Yamashita SI.
    Journal: Am J Case Rep; 2023 Mar 11; 24():e938654. PubMed ID: 36905109.
    Abstract:
    BACKGROUND Sporadic Creutzfeldt-Jakob disease (sCJD) is a fatal disease caused by the change of prion protein (PrP). Affected patients present with rapidly progressive cognitive dysfunction, myoclonus, or akinetic mutism. Diagnosing the Heidenhain variant of sCJD, which initially causes various visual symptoms, can be particularly difficult. CASE REPORT A 72-year-old woman presented with a 2- to 3-month history of photophobia, blurring vision in both eyes. Seven days previously, she showed visual impairment of 20/2000 in both eyes. Left homonymous hemianopia and restricted downward movement of the left eye were observed with an intact pupillary light reflex and normal fundoscopy. On admission, her visual acuity was light perception. Cranial magnetic resonance imaging revealed no abnormality, and electroencephalography showed no periodic synchronous discharges. Cerebrospinal fluid examination on the sixth hospital day revealed tau and 14-3-3 protein with a positive result of real-time quaking-induced conversion. She thereafter developed myoclonus and akinetic mutism and died. Autopsy revealed thinning and spongiform change of the cerebral cortex of the right occipital lobe. Immunostaining showed synaptic-type deposits of abnormal PrP and hypertrophic astrocytes. Consequently, she was diagnosed with the Heidenhain variant of sCJD with both methionine/methionine type 1 and type 2 cortical form based on the western blot of cerebral tissue and PrP gene codon 129 polymorphism. CONCLUSIONS When a patient presents with various progressive visual symptoms, even without typical findings of electroencephalography or cranial magnetic resonance imaging, it is essential to suspect the Heidenhain variant of sCJD and perform appropriate cerebrospinal fluid tests.
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