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Adrenal Mass

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3541. Endocrinologic and immunologic factors associated with recovery of growth in children with human immunodeficiency virus type 1 infection treated with protease inhibitors. (Abstract)

factor alpha (TNF-alpha) were measured before the start of therapy and after 24 weeks. In addition serum IGF-1 and IGFBP-3 values were determined after 48 weeks.Twenty-seven HIV-1-infected children with a median age of 5.5 years (range, 0.3 to 14.9 years) were included. Overall no significant changes in height and body mass index (BMI) z scores were observed. The median baseline plasma viral load of 68,800 copies/ml decreased to less than the detection limit of 500 copies/ml in 80% of the children (...) after 48 weeks whereas IGF-1 stabilized. The increase in IGF-1 was significantly higher in children in whom the BMI and length (after correction for age and sex) increased the most.Hypothyroidism and adrenal axis abnormalities are not associated with restoration of growth after the initiation of antiretroviral therapy in HIV-1-infected children. The combination of relatively high serum IGFBP-3 concentration and relatively lower serum IGF-1 suggests the presence of a growth hormone-resistant state

2003 Pediatric Infectious Dsease Journal

3542. Oncological safety of laparoscopic surgery for urological malignancy: experience with more than 1,000 operations. (Abstract)

, after radical nephrectomy for renal cell carcinoma in 1, growing teratoma after retroperitoneal lymph node dissection in 2, local recurrence of prostate cancer in 3 and after removal of an adrenal metastasis of melanoma in 1. Two port site metastases (0.18% overall, 0.35% of histologically proved cases) occurred, including metastasis of small cell lung carcinoma after adrenalectomy and a residual mass following 2 cycles of chemotherapy after retroperitoneal lymph node dissection.According to our

2003 Journal of Urology

3543. Intraoperative ultrasound aids in dissection during laparoscopic partial adrenalectomy. (Abstract)

technique that provided a 5 mm. margin. Tumors were removed intact and sent for pathological examination.Since 1998, 11 patients have undergone laparoscopic partial adrenalectomy. Intraoperative ultrasound was performed in 7 patients with suspected multiple adrenal masses, including 4 and 3 who underwent unilateral and bilateral laparoscopic partial nephrectomy, respectively. Six of the 7 patients had germline defects in the von Hippel-Lindau disease gene and 1 had no identifiable alteration in the von (...) Hippel-Lindau disease or RET gene. A solitary tumor was identified in 3 cases and multiple lesions were noted in 4. In 1 case intraoperative ultrasound localized a tumor not identified on preoperative imaging that was not readily visible via laparoscopy. Intraoperative ultrasound guided surgical dissection in all cases and identified an extra-adrenal mass in 1 patient with bilateral adrenal masses. There were no complications due to intraoperative ultrasound and no conversions to open surgery. Mean

2002 Journal of Urology

3544. Adrenocortical carcinoma: diagnosis, evaluation and treatment. (Abstract)

to an increase in the incidence of unexpected adrenal masses or incidentalomas in the last decade. There has been a bimodal age incidence of adrenal carcinoma with most patients 40 to 50 years old in the studies reviewed. Overall the prevalence of adrenal tumors was slightly higher in females with most presenting with Cushing's syndrome. Of the 602 adrenal tumors reviewed 62% were functional and 38% were nonfunctional. Modern day imaging, including ultrasound, computerized tomography (CT) and magnetic (...) resonance imaging, have greatly improved the diagnosis and staging of adrenal carcinoma. Surgical removal of a localized tumor and absent metastatic disease were associated with improved survival. Medical therapy with mitotane and its successors in patients with metastatic disease appear to be of little benefit for improving survival.Based on a review of the literature we recommend that hormone levels should be determined in symptomatic and asymptomatic patients with adrenal masses. CT should

2003 Journal of Urology

3545. Potential importance of glomerular citrate synthase activity in remnant nephropathy. Full Text available with Trip Pro

receptors were determined by equilibrium competition binding between tritiated and unlabeled aldosterone. Gene sequencing was performed with reverse transcription-polymerase chain reaction (RT-PCR) and fluorescent dye terminators.In glomeruli isolated from adrenalectomized Wistar rats with intact renal mass, aldosterone stimulated a threefold increase in citrate synthase activity; this stimulation was not observed in glomeruli from Wistar-Furth rats. Similarly, citrate synthase activity in glomeruli (...) isolated from adrenally intact Sprague-Dawley rats was 65% greater than that from adrenalectomized Sprague-Dawley rats. Compared to sham surgery, subtotal nephrectomy resulted in 100% greater glomerular citrate synthase activity in Sprague-Dawley rats. In Wistar-Furth rats, mineralocorticoid receptor binding was not reduced, and mutations in the mineralocorticoid receptor DNA binding segment were not found.Citrate synthase activity is elevated in remnant glomeruli, and experimental models characterized

2003 Kidney International

3546. One hundred and ten consecutive uncomplicated retroperitoneal videoscopic adrenalectomies--Polish multicentre study. (Abstract)

min (range 52-280 min), and estimated blood loss was 73 ml (range 20-300 ml). The average length of hospital stay was 2.9 days (range 2-7 days). None of the patients revealed either recurrence of hormonal hypersecretion or tumour mass in imaging studies during the follow-up period (range 1-34 months).1. VA is recommended in patients with hormonally active tumours and in patients with benign adrenal masses of a diameter up to 6 cm. 2. VA is a safe and feasible procedure if performed by a team

2003 European Journal of Surgical Oncology

3547. Ganglioneuroblastoma presenting as dilated cardiomyopathy. Full Text available with Trip Pro

Ganglioneuroblastoma presenting as dilated cardiomyopathy. We report an unusual presentation of ganglioneuroblastoma with features of dilated cardiomyopathy in a 22 month old girl. She was admitted with cardiomegaly; during echocardiography a suspicious abdominal mass was detected by chance. Further imaging studies, including abdominal ultrasonography and spiral computed tomography, revealed a solid mass originating in the right adrenal gland. Metabolic studies and pathological findings were

2003 Archives of Disease in Childhood

3548. Pharmacology and therapeutic effects of dehydroepiandrosterone in older subjects. (Abstract)

Pharmacology and therapeutic effects of dehydroepiandrosterone in older subjects. Man and higher primates have adrenals that secrete large amounts of dehydroepiandrosterone (DHEA) [prasterone] and its sulphate (DHEAS) [PB 008]. A remarkable feature of plasma DHEAS levels in humans is their great decrease with aging. Researchers have postulated that this age-related decline of DHEAS levels may explain some of the degenerative changes associated with aging. Moreover, administration of DHEA (...) is a neurosteroid which modulates neuronal excitability via specific interactions with neurotransmitter receptors and DHEA is an activator of calcium-gated potassium channels. Randomised, placebo-controlled clinical trials which included healthy individuals aged 60 years and over treated with (near) physiological doses of DHEA (50-100 mg/day) have yielded very few positive results. Impact of DHEA replacement treatment was assessed on mood, well being, cognitive and sexual functions, bone mass, body composition

2003 Drugs & Aging

3549. Endoscopic ultrasound-guided fine-needle aspiration biopsy: a study of 103 cases. (Abstract)

stains were performed on cell blocks wherever required. Cytologic diagnoses were then correlated with the final diagnoses. The latter was based on histologic examination of biopsies/resected pathology materials (n = 54) and clinical follow up (n = 48). Follow-up information was not available for one lesion.Of 103 EUS-FNABs, 42 FNABs were from the pancreas, 38 from the lymph nodes (10 mediastinal and 28 intraabdominal), 10 from the gastrointestinal tract, 7 from the liver, 4 from the adrenal gland, 1 (...) from the biliary tract, and 1 from a retroperitoneal mass. The mean number of passes to obtain diagnostic materials was 3.3. Of 103 EUS-FNABs, 45, 9, 6, and 37 were reported as malignant, suspicious, atypical, and benign, respectively. Six FNABs were nondiagnostic. The authors did not encounter any false-positive cases. There were three false-negative cases (two pancreatic carcinomas and one gastrointestinal stromal tumor of the stomach). No complications were encountered. The sensitivity

2002 Cancer

3550. Adrenarche and bone modeling and remodeling at the proximal radius: weak androgens make stronger cortical bone in healthy children. (Abstract)

status in children.Increased bone mass has been reported in several conditions with supraphysiological adrenal androgen secretion during growth. However, no data are available for normal children. Therefore, our aim was to examine whether adrenal androgens within their physiological ranges may be involved in the strengthening of diaphyseal bone during growth.Periosteal circumference (PC), cortical density, cortical area, bone mineral content, bone strength strain index (SSI), and forearm cross (...) Adrenarche and bone modeling and remodeling at the proximal radius: weak androgens make stronger cortical bone in healthy children. Adrenarche, the physiological increase in adrenal androgen secretion, may contribute to better bone status. Proximal radial bone and 24-h urinary steroid hormones were analyzed cross-sectionally in 205 healthy children and adolescents. Positive adrenarchal effects on radial diaphyseal bone were observed. Obviously, adrenarche is one determinant of bone mineral

2003 Journal of Bone and Mineral Research

3551. Identification and quantification of diadenosine polyphosphate concentrations in human plasma. Full Text available with Trip Pro

and suprarenal vena cava: adrenal veins: Ap3A, 4.05+/-1.63; Ap4A, 6.18+/-2.08; Ap5A, 0.53+/-0.28; Ap6A, 0.59+/-0.31; infrarenal vena cava: Ap3A, 1.25+/-0.66; Ap4A, 0.91+/-0.54; Ap5A, 0.25+/-0.12; Ap6A, 0.11+/-0.06; suprarenal vena cava: Ap3A, 1.40+/-0.91; Ap4A, 1.84+/-1.20; Ap5A, 0.33+/-0.13; Ap6A, 0.11+/-0.07 (micromol/L; mean +/- SEM; each P<0.05 (concentration of adrenal veins versus infrarenal or suprarenal veins, respectively).The presence of diadenosine polyphosphates in physiologically relevant (...) concentrations in human plasma was demonstrated. Because in adrenal venous plasma significantly higher diadenosine polyphosphate concentrations were measured than in plasma from the infrarenal and suprarenal vena cava, it can be assumed that, beside platelets, the adrenal medulla may be a source of plasma diadenosine polyphosphates in humans.

2003 Thrombosis and Vascular Biology

3552. High rate of detection of primary aldosteronism, including surgically treatable forms, after 'non-selective' screening of hypertensive patients. (Abstract)

aldosteronism.This approach allowed PAHHU to diagnose, within 2 years, 54 patients [only seven (13%) hypokalaemic] with primary aldosteronism. All tested negative for glucocorticoid-remediable aldosteronism. Aldosterone production was lateralized to one adrenal in 15 patients (31%; only six hypokalaemic) and was bilateral in 34 (69%; all normokalaemic) of 49 patients who underwent adrenal venous sampling. Among patients with lateralizing adrenal hyperplasia, computed tomography revealed an ipsilateral mass (...) of detection of aldosterone-producing adenoma (as opposed to bilateral adrenal hyperplasia) reflect differences in the procedures used for diagnosis of primary aldosteronism, and the methods used to identify aldosterone-producing adenomas.In the newly established Princess Alexandra Hospital Hypertension Unit (PAHHU), we used procedures developed by Greenslopes Hospital Hypertension Unit (which reports that more than 30% of patients with primary aldosteronism have aldosterone-producing adenomas) to diagnose

2003 Journal of Hypertension

3553. A case report in favor of a multistep adrenocortical tumorigenesis. Full Text available with Trip Pro

in adrenocortical tumors to date are associated with the malignant phenotype. We report a case that suggests that adrenocortical tumorigenesis may be a multistep process. A 43-yr-old patient underwent surgery for an incidentally discovered adrenal mass. Pathological analysis showed that this tumor consisted of two parts: a central part with features of malignancy surrounded by another part with a strictly benign appearance. These data were confirmed by molecular analysis and comparative genomic hybridization

2003 Journal of Clinical Endocrinology and Metabolism

3554. A comparison of biochemical tests for pheochromocytoma: measurement of fractionated plasma metanephrines compared with the combination of 24-hour urinary metanephrines and catecholamines. Full Text available with Trip Pro

interval, 22.1 to 156.9) for urinary total metanephrines and catecholamines. An adrenal pheochromocytoma was missed by urinary testing in two patients with familial syndromes and one asymptomatic patient with an incidentally discovered adrenal mass. An extra-adrenal paraganglioma was missed by plasma testing in one patient. In conclusion, measurements of 24-h urinary total metanephrines and catecholamines yield fewer false-positive results, an attribute preferred for testing low-risk patients

2003 Journal of Clinical Endocrinology and Metabolism

3555. Interleukin-1 receptor antagonist is associated with fat distribution in endogenous Cushing's syndrome: a longitudinal study. Full Text available with Trip Pro

significantly changes body composition in CS patients by decreasing fat mass, especially in the truncal region, without major effects on lean body mass. We also show that circulating IL-1Ra is strongly associated with these changes, signifying a relationship among the hypothalamic-pituitary-adrenal axis, IL-1 system, and regional fat distribution in these patients. (...) Interleukin-1 receptor antagonist is associated with fat distribution in endogenous Cushing's syndrome: a longitudinal study. The weight gain and visceral obesity associated with Cushing's syndrome (CS) has been linked to elevated plasma leptin levels, although the mechanism behind a central leptin resistance in these patients is unknown. Several studies describe interactions among the hypothalamic-pituitary-adrenal axis, leptin, and the IL-1 system. To investigate these interactions, we have

2003 Journal of Clinical Endocrinology and Metabolism

3556. Early endocrine, metabolic, and sonographic characteristics of polycystic ovary syndrome (PCOS): comparison between nonobese and obese adolescents. Full Text available with Trip Pro

and metabolic alterations in adolescents with PCOS and to determine whether differences between nonobese and obese women with PCOS are present early in its course. We studied an ethnically heterogeneous group of 48 adolescents: 11 nonobese with PCOS [age, 16.1 +/- 1.9 yr; body mass index (BMI), 22.5 +/- 1.5 kg/m(2)], 22 obese with PCOS (age, 15.5 +/- 1.4 yr; BMI, 35.9 +/- 6.2 kg/m(2)), and 15 obese controls (age, 14.4 +/- 1.5 yr; BMI, 35.8 +/- 7.1 kg/m(2)). Fasting levels of glucose, insulin, proinsulin (...) . Our findings indicate a more pronounced alteration in the hypothalamo-pituitary-adrenal axis in nonobese adolescents with PCOS and a more marked dysregulation of insulin levels and impairment of insulin sensitivity in their obese counterparts. Our data also suggest differences in the IGF system between nonobese and obese adolescents with PCOS.

2003 Journal of Clinical Endocrinology and Metabolism

3557. Neuroendocrine and metabolic effects of acute ghrelin administration in human obesity. Full Text available with Trip Pro

Neuroendocrine and metabolic effects of acute ghrelin administration in human obesity. Ghrelin stimulates appetite and plays a role in the neuroendocrine response to energy balance variations. Ghrelin levels are inversely associated with body mass index (BMI), increased by fasting and decreased by food intake, glucose load, insulin, and somatostatin. Ghrelin levels are reduced in obesity, a condition of hyperinsulinism, reduced GH secretion, and hypothalamus-pituitary-adrenal axis hyperactivity

2003 Journal of Clinical Endocrinology and Metabolism

3558. Body fat distribution and cortisol metabolism in healthy men: enhanced 5beta-reductase and lower cortisol/cortisone metabolite ratios in men with fatty liver. Full Text available with Trip Pro

cortisone within adipose by 11beta-hydroxysteroid dehydrogenase (HSD) type 1 (11HSD1) has been proposed to cause visceral fat accumulation, whereas decreased hepatic 11HSD1 may protect the liver from glucocorticoid excess. Increased inactivation of cortisol by 5alpha- and 5beta-reductases in the liver may drive compensatory activation of the hypothalamic-pituitary-adrenal axis, hence increasing adrenal androgens and 'android' central obesity. This study aimed to examine relationships between (...) these enzymes and detailed measurements of body fat distribution. Twenty-five healthy men (age, 22-57 yr; body mass index, 20.6-35.6 kg/m(2)) were recruited from occupational health services. Body composition was assessed by anthropometric measurements, bioimpedance, and cross-sectional abdominal magnetic resonance imaging scans. Liver fat content was assessed by magnetic resonance imaging spectroscopy. Insulin sensitivity was measured in a euglycemic hyperinsulinemic clamp. Cortisol metabolites were

2003 Journal of Clinical Endocrinology and Metabolism

3559. Pubertal and gender-related changes in the sympathoadrenal system in healthy children. Full Text available with Trip Pro

children (ages, 5-17 yr; 37 boys and 43 girls) in relation to age, pubertal stage, gender, physical activity, body mass index, and serum levels of sex steroids, dehydroepiandrosterone sulfate, cortisol, leptin, and insulin. Plasma concentrations of the adrenomedullary hormone, epinephrine (E), and its metabolite metanephrine (MN), decreased significantly with advancing puberty and were higher in boys than in girls. E and MN correlated significantly and inversely with dehydroepiandrosterone sulfate (...) a possible modulatory role of the adrenal medulla in the body weight-related timing of adrenarche and/or gonadarche.

2002 Journal of Clinical Endocrinology and Metabolism

3560. The molecular pathogenesis of hereditary and sporadic adrenocortical and adrenomedullary tumors. Full Text available with Trip Pro

The molecular pathogenesis of hereditary and sporadic adrenocortical and adrenomedullary tumors. Modern imaging modalities lead to frequent detection of adrenal masses, most of them incidental findings. Although the majority of adrenocortical and adrenomedullary tumors are benign, there are no reliable clinical and laboratory markers to distinguish most of them from malignant neoplasms. The molecular mechanisms underlying the pathogenesis of these tumors have recently begun to be unraveled (...) . A fruitful avenue for the elucidation of tumorigenesis has been the study of adrenal tumors that are manifestations of hereditary or postzygotic genetic syndromes, because one knows the "first hit", i.e. the primary gene defect. In contrast, in sporadic adrenal tumors the first hit, possibly a somatic mutation of a tumor-related gene, is unknown, and therefore the sequence of genetic alterations is difficult to establish. In this article we review in addition to our own work the literature on molecular

2002 Journal of Clinical Endocrinology and Metabolism

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