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Query: UMLS:C0020538 (hypertension)
 170,190 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Hypothalamic hypopituitarism has been associated with the intermittent intracranial hypertension of "normal-pressure" hydrocephalus. Six patients with this condition were studied endocrinologically; five showed evidence of hypothalamohypophyseal insufficiency, and, though only one needed treatment, all needed continued assessment of their endocrine state during follow-up. Thus, hypothalamohypophyseal dysfunction is more common than might be expected. Tests of anterior pituitary function should be preformed before surgical intervention, as such dysfunction may adversely affect survival and the response to ventricular shunting.
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PMID:Hypopituitarism in normal-pressure hydrocephalus. 44 13

This report describes a group of 25 children and adolescents with biopsy-proven pituitary adenomas. They were found in 33% of patients encountered in our recent study of 74 parasellar tumor detected in patients under 20 years old. Earlier detection accounts for this apparent increase in frequency. This interpretation is supported by the rarity of signs of intracranial hypertension at presentation, as well as decreased incidence and severity of visual failure. More than 70% of patients have evidence of pituitary hypersecretion at presentation. Increased awareness of these endocrinological signs as well as improved hormonal assays facilitate both diagnosis and management. Hypopituitarism is rare; the important exception is suppression of gonadotrophic function that is known to occur early in the natural history of intrasellar pituitary adenomas. The low incidence of suprasellar and extrasellar extension is documented by both radiographic and operative findings. Transsphenoidal resection was employed in 92% of patients, with an estimated total resection in 73% of cases. Follow-up studies show a high quality of survival; no patient has severe neurological deficit and less than half of them require replacement therapy. The recurrence rate is 8%. Our findings do not support a previous report that pituitary adenomas in this age group are frequently extrasellar and invasive.
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PMID:Pituitary adenomas in childhood and adolescence. 67 Oct 71

Two patients in whom the signs and symptoms of intracranial hypertension resolved after surgical correction of hydrocephalus are described. In both instances skull roentgenograms showed an abnormal sella turcica, and an arteriogram and sir study were necessary to prevent misdiagnosis as "pseudotumor cerebri." Evidence of clinical endocrine dysfunction is an early sign of pituitary tumors, but hypopituitarism may also occur in patients with extrasellar processes, including hydrocephalus and intracranial hypertension.
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PMID:Obstructive hydrocephalus as a cause of hypopituitarism. 84 70

Acromegaly is an uncommon disorder and may present in a variety of ways, leading to considerable delay in diagnosis. Unlike other pituitary tumors, tumors associated with acromegaly tend to be fairly large in most patients. Thus, symptoms may be commonly due to the tumor mass as well as to hormone oversecretion. Mortality is two- to threefold increased due to cardiovascular, respiratory, and neoplastic causes. An increase in diabetes mellitus and hypertension may contribute to the first of these. Early treatment may reverse the diabetes, soft tissue changes, sleep apnea, cardiovascular disease, and neuromuscular disease. The effect of early treatment on neoplasia is unclear, and patients probably should continue to be screened, especially for colon neoplasia, even after appropriate therapy for the acromegaly. Hypopituitarism may be present initially as a result of tumor mass but may also develop as a result of ablative therapy.
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PMID:Clinical manifestations of acromegaly. 152 14

333 consecutive patients with hypopituitarism diagnosed between 1956 and 1987 were retrospectively examined. The patients had been given routine replacement therapy. The overall mortality was higher than in an age and sex matched population. Deaths from vascular disorders were also significantly increased (60 [40 male, 20 female] versus 30.8 expected [23.5, 7.4 female]). The hazard function for vascular death was independent of age at diagnosis, time after diagnosis, calendar year of diagnosis, gender, degree of pituitary insufficiency, hypertension, and diabetes mellitus. Mortality risk was raised irrespective of whether hypopituitarism was due to pituitary adenoma or secondary to other diseases. 7 patients (3 male, 4 female) died from malignant diseases (expected 10.1 and 4.1, respectively). These observations indicate that life expectancy is shortened in patients with hypopituitarism. Growth-hormone deficiency could be a factor in this increased mortality from cardiovascular disease.
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PMID:Premature mortality due to cardiovascular disease in hypopituitarism. 197 79

Cyclic replacement therapy using estrogen and progesterone was instituted in 28 patients with gonadal dysgenesis and 13 patients with hypopituitarism. When estriol was given at a dose of 2 mg per day, 10 patients (9 gonadal dysgenesis and 1 hypopituitarism) developed hyperreninemia and 3 of the 10 patients (all gonadal dysgenesis) were associated with hypertension. These side effects subsided within 6 months when the therapy was discontinued or the dose of estriol was decreased to 1 mg per day in addition to beta-blocker. Hypercholesterolemia was observed in 8 patients, but not related to high blood pressure. Attention should be paid to plasma renin activity and blood pressure when estrogen and progesterone are given for the development of genitalia in patients with gonadal dysgenesis.
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PMID:Hyperreninemia and hypertension observed during Kaufmann therapy of patients with gonadal dysgenesis and hypopituitarism. 267 47

Acromegaly is caused by GH-secreting pituitary adenomas and, in rare cases, by ectopic production of GRH with resultant hypersecretion of GH. Important systemic manifestations include acral enlargement, swelling, disfigurement, glucose intolerance and diabetes, hypertension, nerve entrapment, arthropathy, and cardiac disease. Tumor-related major manifestations are visual impairment, oculomotor paralysis, and hypopituitarism. Morbidity is substantial, and mortality is increased. Diagnosis should be made as early as possible by measuring plasma GH after an oral glucose load and plasma somatomedin C levels. Assessment of a pituitary lesion is best made by CT scanning in the coronal plane. Therapy is mandatory and consists of surgical removal of the pituitary adenoma (usually by the transsphenoidal route) or of the ectopic source of GRH (carcinoids or islet cell tumors). Adjunctive radiation and/or drug therapy is often necessary if complete surgical ablation of the adenoma is not possible. Radiation therapy can be administered as conventional supervoltage x-ray treatment or in the form of heavy particle beams. Drugs effective in partially lowering GH levels are bromocriptine and (not yet released) somatostatin analogues. Long-term follow-up of treated patients is important to guard against recurrence, progression, or development of hypopituitarism.
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PMID:Acromegaly. 331 99

Cardiovascular complications are a major cause of morbidity and mortality in acromegaly and seem to be related to the long duration of the disorder. Conventional external pituitary irradiation for acromegaly produces a consistent, but slow, fall in elevated serum growth hormone (GH) levels. It has not been established whether such treatment is effective in preventing the development of cardiovascular complications. The evolution of cardiovascular disease has therefore been studied in 11 acromegalic patients followed up for a mean 10 years (range 3-17) after external pituitary irradiation. At the final follow-up fasting serum GH were significantly (P less than 0.01) lower than pre-irradiation levels, but cardiovascular events (myocardial infarction, dysrhythmias, hypertension, major arterial disease, heart failure) increased significantly in prevalence (P less than 0.01) during this period. Electrocardiographic abnormalities also increased in prevalence. At the final follow-up 6 patients had cardiomegaly on chest X-ray and echocardiographs (10 patients) were abnormal in every case. All 11 patients had evidence of complete or partial anterior hypopituitarism. We confirm that external pituitary irradiation is effective in reducing elevated serum GH levels in acromegaly, but suggest that such a slow reduction in serum GH levels does not retard the development of cardiovascular complications.
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PMID:Progression of cardiovascular disease in acromegalic patients treated by external pituitary irradiation. 396 7

Spontaneously hypertensive (Okamoto-Aoki) rats (SHR) and normotensive (Wistar-Kyoto) rats (WKY) were fed a regular or a high fat diet when they were weaned; animals from each group were autopsied at 60, 90, 230, 250, and 180 days of age. SHR fed the high fat diet were cachectic, their pituitary glands were abnormally small, and despite severe hyperlipidemia, hyperglycemia, and adequate corticosterone levels, their zona glomerulosae were completely depleted of lipid, and they did not develop hypertension (110-115 mm Hg) or any manifestation of atheromatous changes. WKY fed the high fat diet became obese, their pituitary glands increased in size, and their normal blood pressure was slightly reduced (90-115 mm Hg). SHR fed the regular diet developed their usual severely elevated hypertension (185-205 mm Hg). It is suggested that the introduction of a high fat diet at an early age will cause hypopituitarism and inhibit the spontaneously appearing hypertension in SHR.
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PMID:Inhibition of the pathogenesis of spontaneous hypertension in spontaneously hypertensive rats by feeding a high fat diet. 746 Aug 55

Primary empty sella syndrome (ESS) is an anatomo-radiological picture characterized by the presence of an arachnoid herniation filled with liquor that compresses the pituitary against the sellar wall. ESS occurs particularly in obese, hypertensive, cephalalgic women. It is often asymptomatic but may be associated with ophthalmologic, neurologic and non-characterizing endocrine disorders. We report here 43 cases of primary ESS observed and assessed in our Departments of Internal Medicine from June 1983 to May 1993. The following endocrinological diagnostic procedures were carried out: hormonal (RIA) basal profile: FT3, FT4, TSH, PRL, ACTH, FSH, LH, 8.00 a.m. and p.m., blood cortisol, aldo, PRA, DHEA-S, FTe, E2, P, PTH, CT, and calcemia and phosphoremia; provocative tests: TRH, GnRH, etc.; inhibition tests: high dose dexamethasone. Clinical, neurologic (skull radiographs, sellar stratigraphy, computed tomography scan and magnetic resonance), and ophthalmologic (fundus, visual fields) assessments were also made. Our findings fit with the data in the literature concerning common symptoms of ESS, associated endocrinopathies and other illness. We found obesity (62.7%), oligo-amenorrhea (16.6%), galactorrhea (14.6%), hyperPRL (11.6%), hypopituitarism (9.3%), hypogonadism (4.6%), diabetes insipidus (2.3%), (micro-)polycystic ovary syndrome (19%), hyperACTH (2.3%). In 9.3% of the cases, endocrinopathy referred to pituitary adenomas. Moreover, we noted a high frequency of psychological disorders, to our knowledge not previously reported in the literature, including anxiety or dysthymic disorders with altered behavior (chiefly oral compulsion). We also make the hypothesis that obesity (occurring in 62.7% of our patients) and hypertension (62.7%) may be related to hypothalamic alterations.
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PMID:[43 cases of primary empty sella syndrome: a case series]. 761 55


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