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Primary adrenal insufficiency: a new cause of reversible gastric stasis.

Primary adrenal insufficiency is known to cause a wide spectrum of sometimes severe upper gastrointestinal symptoms; however, it has not previously been shown to be the cause of reversible gastric stasis. We have documented such a case in which the symptoms and physiologic abnormalities associated with gastric stasis were reversed by steroid replacement. A follow-up radionuclide gastric-emptying study after physiologic steroid replacement showed complete normalization of gastric emptying. Although gastric stasis has long been suspected of being present with primary adrenal insufficiency, this represents the first case in which it has been documented, and so should be included in the differential diagnosis of patients presenting with chronic nausea and vomiting.

Adrenal Cortex Diseases↗

Adrenocortical function in the acquired immunodeficiency syndrome (AIDS)

These discussions are selected from the weekly staff conferences in the Department of Medicine, University of California, San Francisco. Taken from transcriptions, they are prepared by Drs Homer A. Boushey, Professor of Medicine, and David G. Warnock, Associate Professor of Medicine, under the direction of Dr Lloyd H. Smith, Jr, Professor of Medicine and Associate Dean in the School of Medicine. Requests for reprints should be sent to the Department of Medicine, University of California, San Francisco, School of Medicine, San Francisco, CA 94143.

AIDS-Related Complex↗

Surgical treatment of primary aldosteronism.

An aldosterone-producing adenoma is the cause of primary aldosteronism in about 85%. Unilateral adrenalectomy cures the potassium wasting and normalizes the blood-pressure in more than 70%, independently of the severity or duration of the hypertension. The location of an aldosteronoma is best obtained by computerized tomography and selective venous catheterization with determination of the aldosterone/cortisol ratio. When the biochemical studies suggest hyperplasia, medical treatment is recommended. It is, however, our policy to remove an adrenal gland with hyperplasia, when catheterization demonstrates unilateral hyperfunction. At operation a posterior or a flank approach is preferably used.

Adenoma↗

Transforming growth factor alpha, epidermal growth factor, and epidermal growth factor receptor expression in normal and diseased human adrenal cortex by immunohistochemistry and in situ hybridization.

Because epidermal growth factor (EGF), transforming growth factor-alpha (TGF-alpha), and epidermal growth factor receptor (EGFR) have been implicated in the regulation of adrenocortical function, we used immunohistochemistry and in situ hybridization of EGF and TGF-alpha to study 41 specimens of human adrenal cortex, including 10 normal specimens, 15 aldosteronomas, five Cushing's adenomas, six adrenocortical incidentalomas, and five carcinomas to determine what role these growth factors play in controlling human adrenocortical function. Neither immunoreactivity nor mRNA hybridization signals to EGF was detected in any specimens, and EGF therefore may exert its effects on adrenal function as an endocrine hormone. TGF-alpha expression was detected at both protein and mRNA levels in normal and neoplastic adrenal cortex, demonstrating that TGF-alpha is synthesized locally in human adrenal cortex. TGF-alpha expression was observed in the cells with increased steroidogenesis, including compact tumor cells and zona fasciculata cells with lipid depletion, but did not necessarily correlate with production sites of any specific steroid hormone. EGFR immunoreactivity was more widely distributed than TGF-alpha immunoreactivity. Both TGF-alpha and EGFR expression were markedly elevated in adrenocortical carcinomas. TGF-alpha and EGFR thus appear to be involved in biological function in both normal and neoplastic human adrenal cortex. In addition, TGF-alpha and EGFR may play important roles in some biological features of adrenocortical malignancy.

Adrenal Cortex↗

[The diagnosis and treatment of hormonally inactive adrenal formations].

Under analysis are results of an examination of 56 patients with hormonally non-active tumors of the adrenals, 48 of them were operated upon. In 20 patients (35%) they had clinical manifestations, 16 patients (28%) had an elevated level of the 17-HCS and 17-CS excretion in the 24-hours urine. Morphological investigations of the tumors in 20 patients have revealed clear cell adenomas of the cortical layer of the adrenal, in 19 patients--tumoral cysts, in 3 patients--true cysts, in 1 case-myelolipoma, in 1 case--ganglioneuromyelolipoma, in 4 cases--hormonally non-active carcinomas of the adrenal cortex. The authors propose to designate the new formations described as hormonally non-active tumors of the adrenals. In view of the absence of absolute methods for the identification of malignancy of the tumors the operative treatment of them is proposed.

17-Hydroxycorticosteroids↗

[CRH-test].

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ACTH Syndrome, Ectopic↗

[Metyrapone test].

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ACTH Syndrome, Ectopic↗