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Published on: December 20, 2017
Rigid spine syndrome revealing late-onset Pompe disease
Pascal Laforêt1, Valérie Doppler, Catherine Caillaud
1Centre de référence de pathologie neuromusculaire Paris-Est, Institut de Myologie, Groupe Hospitalier Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France. pascal.laforet@psl.aphp.fr
Abstract:
The authors describe a 50-year-old man who was evaluated for a rigid spine syndrome with onset at age 15, and subsequent walking difficulties. Cardiac and pulmonary functions were normal. Deltoid biopsy revealed the presence of small vacuoles and increased glycogen with Periodic Acid Schiff staining in a limited number of fibers. Acid alpha-glucosidase staining was decreased in leucocytes, and genetic analysis identified the presence of two mutations in that gene. This observation suggests that Pompe disease should be considered in the differential diagnosis of rigid spine syndrome, even in patients without respiratory involvement or with a muscle biopsy showing only mild histopathological changes.
Insights
Pompe disease, a rare genetic disorder, can manifest as rigid spine syndrome. Early diagnosis is crucial, even with mild symptoms, to consider Pompe disease in differential diagnoses.
Area of Science:
- Neurology
- Genetics
- Metabolic Disorders
Background:
- Rigid spine syndrome is a rare condition characterized by progressive stiffness of the spine.
- Differential diagnosis can be challenging, especially in atypical presentations.
Observation:
- A 50-year-old male presented with rigid spine syndrome and walking difficulties since adolescence.
- Cardiac and pulmonary functions were normal.
- Muscle biopsy showed mild histopathological changes including vacuoles and increased glycogen.
Findings:
- Leukocyte acid alpha-glucosidase staining was decreased.
- Genetic analysis revealed two mutations in the acid alpha-glucosidase gene.
- These findings confirmed a diagnosis of Pompe disease.
Implications:
- Pompe disease should be considered in the differential diagnosis of rigid spine syndrome.
- This includes cases without respiratory involvement or with mild muscle biopsy findings.
- Highlights the importance of genetic testing for Pompe disease in suspected cases.
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