Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0001430 (adenoma)
 21,222 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

85 surgically removed pituitary adenomas were studied by light and electron microscopical and in part immunohistochemical methods. The tumors were histogically classified and reexamined by the ultrastructure. Histochemically the adenomas could be differentiated in acidophil adenomas (1. group, 41%), mucoid cell adenomas (2. group, 6%), and chromophobe adenomas (3. group, 37%) whereas oncocytic adenomas (4. group, 16%) could be identified only in plastic-embedded sections. About half of the acidophil adenomas were highly differentiated and showed structures which correspond to those of normal STH cells (subgroup 1.1). 1 adenoma consisted of cells of prolactin type (subgroup 1.2). The other acidophil adenomas were differentiated to a lower degree and showed no resemblance to the structures of normal acidophil cells. The 5 mucoid cell adenomas were proved to be with all methods highly differentiated adenomas of ACTH-cell type (subgroup 2.1). TSH-cell adenomas (subgroup 2.2) and lower differentiated mucoid cell adenomas (subgroup 2.0) were lacking in our collection. More than one third of the chromophobe adenomas showed well developed endoplasmic reticulum and Golgi complexes. The other had little and small organellas that resemblances to immature stem cells were evident. The oncocytic adenomas were identified in plastic-embedded sections by their fine-granular structures which were based ultrastructurally not on small secretory granules but on closely arranged mitochondrias.
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PMID:[Light and electron microscopic studies for classification of pituitary adenomas (author's transl)]. 12 39

A patient with acromegaly is described with a relatively small eosinophilic adenoma of the hypophysis, the cardiopathy standing out on the foreground of the clinical pictrire, due to which it has for a long time been interpreted as a primary cardiac ailment. The cardiac disorder proceeds with cardiomegaly, conductivity disturbances and left, quickly progressing into complete and resistant to treatment cardiac insufficiency. The problem of the origination of the so called primary cardiac insufficiency is discussed, resulting from the direct effect of STH upon myocardium.
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PMID:[Acromegalic cardiopathy]. 14 29

The presenting signs, symptoms, roentgenographic findings, endocrine evaluations, treatment, and results in 68 cases of presumed pituitary adenomas treated over an 18-year period are discussed. The most common symptoms were headache, acromegalic changes, visual symptoms, and amenorrhea. Most common physical findings were obesity, acromegaly, and visual field defects, usually bitemporal hemianopsia. Roentgenographic evidence of sellar erosion was almost universal but angiography and pneumoencephalography were required to evaluate suprasellar extension. Brain scan was not considered a particularly useful diagnostic tool. Endocrine status was best evaluated by a battery of tests including 17-OH, 17-KS, T3, T4, PBI, ACTH stimulation, and FSH and STH levels. (Prolactin levels are currently being obtained, also). Surgical specimens were obtained in 29 patients, with subsequent diagnoses of 22 chromophobe adenomas, five eosinophilie adenomas, one cystic adenoma, and one necrotic tumor. All five eosinophilic tumors came from acromegalic patients. Patients treated by operation alone or operation followed by radiotherapy generally had less "medical morbidity" than did patients who received radiotherapy alone.
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PMID:Review of 18 years' experience with pituitary tumors. 19 48

Altogether 16 persons with STH-producing hypophyseal adenoma were investigated by tacho-oscillography, total rheography, blood taken from the ulnar vein, a radioimmunoassay to determine the levels of STH, ACTH, cortisol, deoxycorticosterone, aldosterone, T3, T4, vasopressin, prostaglandin E2, 6-keto-prostaglandin F1 alpha, and plasma renin activity. Acromegalic patients demonstrated an elevated level of STH, and prostaglandin E2 secretion was inhibited. Two groups of patients were singled out according to the hemodynamic state: the 1st group was characterized by a hyperkinetic type of circulation and normotension of borderline hypertension; the 2nd group was characterized by hypokinetic circulation, increased vascular resistance, labile or stable arterial hypertension. The interrelationship of hemodynamic and hormonal indices was unnoticed. It has been assumed that of pathogenetic importance in the development of arterial hypertension is depletion of E2 production, and at early stages--body liquid retention resulting from hypersomatotropinemia.
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PMID:[State of the endocrine and cardiovascular systems in patients with somatotropin-producing hypophyseal adenoma]. 130 90

A study was made of the state of the hypothalamohypophyseal system in patients with different types of chromophobe adenoma. Altogether 62 patients were examined using metoclopramide and Parlodel tests (38 patients were with somatotropinoma, 13--with prolactinoma, 11--with somatotropinoma with hyperprolactinemia). The time course of STH, PRL and TSH secretion in the blood was investigated. Dopaminergic blockade in the Metoclopramide test was shown to cause no change in the time course of PRL secretion in patients with prolactinomas, and a PRL reaction in patients with somatotropinomas and adenomas with PRL and STH hypersecretion was sharply decreased. A paradoxical STH reaction (a decrease) in somatotropinomas and considerable disorders in the type of PRL and TSH secretion in all forms of adenomas was defined in the Parlodel test (a dopaminergic agonist). The results obtained suggest considerable disorders in the dopaminergic regulation of the hypothalamohypophyseal system of patients with chromophobe adenomas and the efficacy of the metoclopramide and Parlodel tests in the differential diagnosis of these conditions.
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PMID:[Dopaminergic regulation of the hypothalamo-hypophyseal system in patients with hypophyseal adenomas]. 258 20