Deutsche medizinische Wochenschrift (1946) · 2013
[Rare cause of recurrent hypoglycaemia in type 1 diabetes mellitus--case 6/2013].
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Schwarz F, Roden M, Fritsche A, Müssig K
Аннотация
HISTORY AND ADMISSION FINDINGS: We report on a 44-year-old patient with type 1 diabetes who suffered from vomiting and diarrhoea for 10 days as well as episodes of recurrent hypoglycaemia with reduced insulin requirements. Medical history was remarkable for nasopharyngeal carcinoma that had been treated by radiation and chemotherapy five years earlier.
INVESTIGATIONS: Laboratory results showed hyponatraemia, reduced free thyroxine with normal thyroid- stimulating hormone and diminished morning serum cortisol levels. Short synacthen test revealed inadequate stimulation of cortisol. Corticotropin-releasing hormone test showed a subnormal stimulation of cortisol with a strong increase of adrenocorticotropin. Besides, testosterone, luteinizing hormone and insulin- like growth factor-1 levels were reduced. The growth hormone-releasing hormone-arginine test revealed complete growth hormone deficiency. A MRI of the sella revealed no abnormalities in hypothalamus and pituitary gland.
DIAGNOSIS, TREATMENT AND COURSE: Findings were consistent with panhypopituitarism following radiotherapy for nasopharyngeal carcinoma. A replacement therapy was started comprising hydrocortisone, L-thyroxine and testosterone. Accordingly, symptomatology improved.
CONCLUSIONS: Obscure recurrent hypoglycaemia requires endocrinological tests to clarify possible underlying hypocortisolism.
INVESTIGATIONS: Laboratory results showed hyponatraemia, reduced free thyroxine with normal thyroid- stimulating hormone and diminished morning serum cortisol levels. Short synacthen test revealed inadequate stimulation of cortisol. Corticotropin-releasing hormone test showed a subnormal stimulation of cortisol with a strong increase of adrenocorticotropin. Besides, testosterone, luteinizing hormone and insulin- like growth factor-1 levels were reduced. The growth hormone-releasing hormone-arginine test revealed complete growth hormone deficiency. A MRI of the sella revealed no abnormalities in hypothalamus and pituitary gland.
DIAGNOSIS, TREATMENT AND COURSE: Findings were consistent with panhypopituitarism following radiotherapy for nasopharyngeal carcinoma. A replacement therapy was started comprising hydrocortisone, L-thyroxine and testosterone. Accordingly, symptomatology improved.
CONCLUSIONS: Obscure recurrent hypoglycaemia requires endocrinological tests to clarify possible underlying hypocortisolism.