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[Persistent hyperinsulinemic hypoglycemia of infancy: the pathologist's experience].
Christine Sempoux1, Yves Guiot, Henri Noël
1Département d'Anatomie Pathologique, Cliniques Universitaires Saint Luc, 10, avenue Hippocrate, 1200 Bruxelles, Belgique, France. rahier@anps.ucl.ac.be
Annales De Pathologie
|December 17, 2002
Summary
Persistent hyperinsulinemic hypoglycemia of Infancy (PHHI) is a condition causing severe low blood sugar. Research suggests an intrinsic functional defect in pancreatic beta cells, not just cell mass changes, underlies diffuse PHHI.
Area of Science:
- Endocrinology
- Pediatric Pathology
- Surgical Pathology
Context:
- Persistent hyperinsulinemic hypoglycemia of Infancy (PHHI) presents significant neurological risks due to severe hypoglycemia.
- PHHI exhibits focal or diffuse pancreatic anomalies, with diffuse forms often appearing normal and requiring extensive surgery.
Purpose:
- To investigate pathogenic hypotheses for the diffuse form of PHHI.
- To evaluate the roles of nesidioblastosis, beta cell mass, delta cell mass, and intrinsic beta cell function.
Summary:
- Nesidioblastosis is present but not specific or indicative of proliferation.
- Increased beta cell mass is not consistently observed.
- Decreased delta cell mass is inconsistent.
- Evidence supports intrinsic beta cell functional lesions, including increased proinsulin in the Golgi and morphological changes in beta cells.
Impact:
- Findings guide surgical treatment for diffuse PHHI by identifying histological anomalies on frozen sections.
- Clarifies the pathophysiology of diffuse PHHI, moving beyond simple cell mass alterations.
- Improves understanding of a rare but serious infant condition.