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[A case report of Russel's diencephalic cachexia]
1Service de Pédiatrie II, Centre Hospitalier Universitaire d'Amiens, Hôpital Nord.
Insights
Diencephalic syndrome of infancy causes severe emaciation. Tumor necrosis factor alpha (TNF alpha) may drive this cachexia, suggesting anti-TNF therapies as a potential treatment for this rare condition.
Area of Science:
- Pediatric Neurology
- Oncology
- Endocrinology
Background:
- Diencephalic syndrome of infancy is a rare condition characterized by severe emaciation and failure to thrive.
- Ocular anomalies, such as strabismus and nystagmus, can be presenting symptoms.
- Diagnostic imaging modalities like MRI and ultrasonography are crucial for identifying the syndrome.
Observation:
- A case report details an infant with severe emaciation and intermittent ocular issues.
- The infant's cachexia was disproportionate to tumor spread, prompting investigation into underlying pathophysiology.
- Magnetic resonance imaging and transfontanellar ultrasonography confirmed the diagnosis.
Findings:
- Pathophysiological hypotheses for cachexia in diencephalic syndrome are reviewed.
- Tumor necrosis factor alpha (TNF alpha), a potent lipolytic agent, is implicated in other cachexia conditions but not previously studied in this syndrome.
- Excessive TNF alpha production is hypothesized to contribute to the characteristic emaciation.
Implications:
- This study suggests a potential role for TNF alpha in the cachexia associated with diencephalic syndrome of infancy.
- Targeting TNF alpha with monoclonal antibodies could represent a novel therapeutic strategy for managing emaciation in affected infants.
- Further research is warranted to validate the role of TNF alpha and the efficacy of anti-TNF therapies.
Abstract:
The case of an infant admitted for evaluation of severe emaciation with intermittent ocular anomalies including strabismus and nystagmus is reported. This case demonstrates the value of magnetic resonance imaging and transfontanellar ultrasonography for the diagnosis of diencephalic syndrome of infancy. The prognosis of this condition is usually grim, in particular because of the severe emaciation which is disproportionate with the tumour spread. Pathophysiologic hypotheses put forward to explain this cachexia are reviewed. Although cytokines such as TNF alpha are currently incriminated in the pathophysiology of cachexia induced by a number of conditions, they have not yet been studied in diencephalic syndrome of infancy. TNF alpha is a potent lipolytic agent. Excessive production of TNF alpha may be involved in the genesis of the emaciation characteristic of diencephalic syndrome. Inappropriate production of TNF alpha may respond to the administration of specific anti-TNF monoclonal antibodies. This approach may be considered as a means for treating emaciation in patients with diencephalic syndrome of infancy.