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Published on: January 7, 2016
Growth without growth hormone (GH): a case report.
Polyzois Makras1, Dimitris Papadogias, Grigoris Kaltsas
1Department of Endocrinology and Metabolism G. Gennimatas General Hospital, Athens, 115 27 Greece.
Growth without growth hormone (GH) is rare but possible. This study highlights a case of significant height gain in a patient with panhypopituitarism, suggesting hyperinsulinemia may play a role in growth.
Area of Science:
- Pediatric Endocrinology
- Growth Disorders
- Metabolic Syndromes
Background:
- Growth without growth hormone (GH) is infrequently observed in patients with pituitary or idiopathic hormone deficiencies.
- The underlying mechanisms for GH-independent growth remain largely unknown.
Purpose of the Study:
- To describe a unique case of substantial height gain in an adolescent with established panhypopituitarism.
- To investigate potential mechanisms contributing to growth in the absence of GH, focusing on hyperinsulinemia.
Main Methods:
- Case report of a 17-year-old male with panhypopituitarism and severe hyperinsulinemia.
- Longitudinal height measurement over 7 years.
- Endocrine evaluation including oral glucose tolerance test to assess insulin response.
Main Results:
- The patient achieved a height increase of 38.5 cm over 7 years despite documented GH insufficiency.
- Severe hyperinsulinemia was confirmed via an exaggerated insulin response to glucose challenge.
- Final height was within or above the patient's target height range.
Conclusions:
- Severe hyperinsulinemia may contribute to growth in patients with GH deficiency, potentially via insulin and/or IGF receptor pathways.
- This case demonstrates that significant height attainment is possible in idiopathic pituitary hormonal deficiency despite persistent GH insufficiency.
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