Biomedical subjects
Publications and source records attributed to O Kehl.
About 10-30% of benign duodenal tumors are Brunner's gland tumors. These are almost always benign. Usually they present as incidental findings in the form of small polypoid lesions at barium examination or at panendoscopy. We present a case with a large obstructing and bleeding Brunner's gland adenoma located in the duodenal bulb which was removed by endoscopic polypectomy.
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Repeated administration of diazepam in two ventilated patients had caused drug cumulation and coma over several days. In both cases central nervous depression could be demonstrated by the benzodiazepin antagonist Ro 15-1788 which induced reversal of coma. Estimation of plasma concentrations in a 70-year-old female patient 150 hours after the last administration showed a diazepam concentration of 437 ng/ml and a desmethyl-diazepam concentration of 483 ng/ml. The calculated elimination half-life of these substances were 109 and 403 hours. In the second case benzodiazepin could be demonstrated in urine for 10 days after withdrawal of medication. These observations suggest that diazepam is not a suitable drug for prolonged sedation in artificially ventilated patients. The benzodiazepin antagonist Ro 15-1788 represents a valuable diagnostic aid in ascertained or suspect cases of benzodiazepin intoxications. It can also be used therapeutically for reversal of central nervous depression.
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The case is reported of a 32-year old women of Dutch origin who presented with diabetes insipidus, diabetes mellitus, atrophy of the optic nerve, and dilatation of the urinary tract, the combination known as "DIDMOAD syndrome". Unusual features of this case were regional atrophy of the cerebellum and the pons, and hydrocephalus internus which were associated with alterations of personality and mental function. The clinical symptoms of the syndrome simulated "essential" type 1 diabetes with advanced complications such as retinopathy and autonomous and peripheral neuropathy. The presence of diabetes insipidus with polyuria and polydipsia was not recognized for years because the symptoms were ascribed to diabetes mellitus. The neurologic and psychological symptoms in this patient suggest a more generalized defect of the central nervous system in this syndrome than has been observed previously. Recognition of the condition is of importance because it requires specific therapeutic measures (e.g. for diabetes insipidus), and because of the genetic and prognostic implications.