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[Kufs-disease; a rare cause of early-onset dementia]
R Schreiner1, I Becker, M H Wiegand
1Psychiatrische Klinik und Poliklinik der Technischen Universität München. Ralph.Schreiner@lrz.tum.de
Abstract:
The case of a 35-year-old man with progressive dementia from the age of 17 is presented. Clinical examination showed mild extrapyramidal and cerebellar signs and rare myoclonus. Neuropsychological evaluation disclosed severe cognitive deficits. Magnetic resonance imaging (MRI) revealed moderate generalized atrophy with abnormal iron deposition in the basal ganglia. Positron emission tomography (PET) with 18-fluorodeoxyglucose (18-FDG) demonstrated clear temporoparietal hypometabolism. The clinical symptoms and course are typical for the rare adult type of neuronal ceroid lipofuscinoses (Kufs' disease). The diagnosis is supported by the electron microscope detection of an abnormal accumulation of lipid vacuoles and lipofuscin in the eccrine sweat glands and the rectal ganglia cells.
Insights
This case study highlights Kufs' disease, a rare neuronal ceroid lipofuscinosis, presenting in adulthood with progressive dementia. Diagnosis was confirmed through neuroimaging and electron microscopy of tissue samples.
Area of Science:
- Neurology
- Neuroscience
- Genetics
Background:
- Neuronal ceroid lipofuscinoses (NCLs) are a group of rare inherited neurodegenerative disorders.
- Kufs' disease, the adult-onset form of NCL, is characterized by progressive neurological decline.
- This report details a specific case to illustrate the diagnostic challenges and features of Kufs' disease.
Observation:
- A 35-year-old male presented with dementia onset at age 17, exhibiting extrapyramidal and cerebellar signs, and myoclonus.
- Neuropsychological testing revealed severe cognitive impairment.
- Brain MRI showed generalized atrophy and basal ganglia iron deposition; 18-FDG PET revealed temporoparietal hypometabolism.
Findings:
- The patient's clinical presentation and disease progression were consistent with Kufs' disease.
- Electron microscopy confirmed the accumulation of lipid vacuoles and lipofuscin in eccrine sweat glands and rectal ganglia.
- These findings support the diagnosis of adult-onset neuronal ceroid lipofuscinosis.
Implications:
- This case underscores the importance of considering rare neurodegenerative disorders like Kufs' disease in adult-onset dementia.
- Advanced neuroimaging (MRI, PET) and tissue analysis are crucial for accurate diagnosis.
- Understanding the pathophysiology of Kufs' disease can inform future therapeutic strategies for NCLs.