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https://www.readbyqxmd.com/read/28170483/diagnosis-and-treatment-of-pituitary-adenomas-a-review
#1
Mark E Molitch
Importance: Pituitary adenomas may hypersecrete hormones or cause mass effects. Therefore, early diagnosis and treatment are important. Observations: Prevalence of pituitary adenomas ranges from 1 in 865 adults to 1 in 2688 adults. Approximately 50% are microadenomas (<10 mm); the remainder are macroadenomas (≥10 mm). Mass effects cause headache, hypopituitarism, and visual field defects. Treatments include transsphenoidal surgery, medical therapies, and radiotherapy...
February 7, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28145933/an-economic-analysis-of-bromocriptine-versus-trans-sphenoidal-surgery-for-the-treatment-of-prolactinoma
#2
Lian Duan, Hua Yan, Minqiang Huang, Yuhui Zhang, Feng Gu
Prolactinomas account for ∼40% of all pituitary adenomas and are important causes of infertility and gonadal dysfunction. In general, most prolactinomas are treated medically with dopaminergic agonists, while surgery is reserved for patients intolerant or nonresponsive to these medications. The aim of this study was to carry out a comparative analysis of the cost-effectiveness of medical therapy with bromocriptine and surgical therapy with trans-sphenoidal surgery. A Markov model was developed based on retrospective data from 126 patients with prolactinoma treated in our hospital between October 2008 and May 2009, and from data published previously...
January 31, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28120060/efficacy-of-microsurgical-sublabial-approach-msa-versus-endoscopic-endonasal-approach-eea-for-the-treatment-of-pituitary-adenomas-based-on-radiological-and-hormonal-outcome
#3
Pier Paolo Mattogno, Annunziato Mangiola, Giorgio Lofrese, Vera Vigo, Carmelo Anile
BACKGROUND: The purpose of this study was to compare the surgical efficacy of the microsurgical sublabial approach (MSA) versus the endoscopic endonasal approach (EEA) for the treatment of pituitary adenomas, based on short-term (12 months) radiological and endocrinological follow-up. METHODS: One hundred and fourteen patients affected by pituitary adenoma were enrolled at our Unit between January 2007 and February 2012; 72 were treated with MSA, and 42 with EEA...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28057861/cellular-context-dependent-consequences-of-apc-mutations-on-gene-regulation-and-cellular-behavior
#4
Kyoichi Hashimoto, Yosuke Yamada, Katsunori Semi, Masaki Yagi, Akito Tanaka, Fumiaki Itakura, Hitomi Aoki, Takahiro Kunisada, Knut Woltjen, Hironori Haga, Yoshiharu Sakai, Takuya Yamamoto, Yasuhiro Yamada
The spectrum of genetic mutations differs among cancers in different organs, implying a cellular context-dependent effect for genetic aberrations. However, the extent to which the cellular context affects the consequences of oncogenic mutations remains to be fully elucidated. We reprogrammed colon tumor cells in an Apc(Min/+) (adenomatous polyposis coli) mouse model, in which the loss of the Apc gene plays a critical role in tumor development and subsequently, established reprogrammed tumor cells (RTCs) that exhibit pluripotent stem cell (PSC)-like signatures of gene expression...
January 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28057099/-the-surgery-of-thyrotropin-secreting-pituitary-adenomas-and-the-significance-of-thyroid-stimulating-hormone-level-in-follow-up
#5
Y Y Yang, H Liu, A Hu, Y Zou, B Xing, Y Yao, R Z Wang, W Lian
Objective: To explore the clinical characteristics of thyrotropin-secreting pituitary adenomas and the effect of the transsphenoidal approach of procedure with/without drug treatment for thyrotropin-secreting pituitary adenomas, and to investigate the correlation between the prognosis of thyrotropin-secreting pituitary adenomas and the postoperative level of thyroid stimulating hormone (TSH). Methods: A total of 45 patients with thyrotropin-secreting pituitary adenoma who hospitalized in Peking Union Medical College Hospital from 2000 to 2015 were enrolled in the study...
December 20, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28003168/endoscopic-endonasal-surgery-for-remission-of-cushing-disease-caused-by-ectopic-intracavernous-macroadenoma-case-report-and-literature-review
#6
Maria Koutourousiou, Welby I Winstead
BACKGROUND: Complete surgical resection of an adrenocorticotropic hormone (ACTH)-secreting pituitary adenoma is the gold standard of treatment of Cushing disease. Ectopic location of these adenomas is an extremely rare condition that may compromise the diagnosis and surgical success. We present the first case of an ectopic intracavernous ACTH-secreting macroadenoma totally resected with endoscopic endonasal surgery (EES). CASE DESCRIPTION: A 36-year-old woman presented with Cushing syndrome...
December 18, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27982201/incidence-and-prevalence-of-clinically-relevant-pituitary-adenomas-retrospective-cohort-study-in-a-health-management-organization-in-buenos-aires-argentina
#7
Patricia Fainstein Day, Monica Graciela Loto, Mariela Glerean, María Fabiana Russo Picasso, Soledad Lovazzano, Diego Hernán Giunta
Objectives: The main purpose of this study was to estimate the incidence rate and prevalence of clinically relevant pituitary adenomas (PAs) within the Hospital Italiano Medical Care Program (HIMCP), a well-defined population of 150,000 members living in the urban and suburban area of the city of Buenos Aires. We defined clinically relevant PAs as those associated with endocrine dysfunction and/or mass effect. Subjects and methods: A retrospective open cohort study was conducted, including all members of the HIMCP over 18 years old, with active memberships during the period of the study, from January 1st 2003, to January 1, 2014...
November 2016: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27982199/elevated-igf-1-with-gh-suppression-after-an-oral-glucose-overload-incipient-acromegaly-or-false-positive-igf-1
#8
Pedro W Rosario, Maria R Calsolari
Objective: To report the evolution of patients with a suggestive clinical scenario and elevated serum insulin-like growth factor-1 (IGF-1), but growth hormone (GH) suppression in the oral glucose tolerance test (OGTT), in whom acromegaly was not initially excluded. Subjects and methods: Forty six patients with a suggestive clinical scenario, who had elevated IGF-1 (outside puberty and pregnancy) in two measurements, but GH < 0.4 µg/L in the OGTT, were selected...
November 2016: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27908263/prevalence-and-predictors-of-overweight-and-obesity-in-patients-with-pituitary-dysfunctions
#9
Birgit Harbeck, Sven Danneberg, Amir Hossein Rahvar, Heiner Mönig, Christian Stefan Haas
BACKGROUND: Patients with hypothalamic-pituitary disorders (HPD) may be of increased risk to develop overweight and obesity, thereby fostering cardiovascular events. However, it remains unclear if patients with pituitary dysfunctions per se have an increased risk of becoming obese. OBJECTIVE: The objective of this study was to evaluate prevalence and to identify possible predictors of overweight and obesity in patients with pituitary dysfunctions. METHODS: A total of 121 out-patients having various causes for HPD were assessed for height and body weight; body mass index (BMI) was calculated and correlated with clinical features...
November 30, 2016: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/27879325/cushing-syndrome-in-a-child-due-to-pro-opiomelanocortin-pomc-secretion-from-a-yolk-sac-tumor
#10
Evelien F Gevers, Suzanne Meredith, Pratik Shah, John Torpiano, Catherine Peters, Neil J Sebire, Olga Slater, Anne White, Mehul T Dattani
CONTEXT: Pituitary microadenomas and adrenal tumours are the most common causes for endogenous Cushing syndrome (CS) in children. CASE DESCRIPTION: We describe a two-year old girl with Cushing syndrome due to ectopic pro-opiomelanocortin (POMC) production from an abdominal yolk sac tumor. Cortisol concentrations were elevated but adrenocorticotropic hormone (ACTH) concentrations were equivocal. The use of antibodies specifically detecting ACTH precursors revealed that plasma ACTH precursors were elevated...
February 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/27847570/parasellar-extension-grades-and-surgical-extent-in-endoscopic-endonasal-transsphenoidal-surgery-for-pituitary-adenomas-a-single-surgeon-s-consecutive-series-with-the-aspects-of-reliability-and-clinical-validity
#11
Sang-Hyo Lee, Jae-Sung Park, Song Lee, Sung-Won Kim, Yong-Kil Hong
OBJECTIVE: The inter-rater reliability of the modified Knosp's classification was measured before the analysis. The clinical validity of the parasellar extension grading system was evaluated by investigating the extents of resection and complication rates among the grades in the endoscopic endonasal transsphenoidal surgery (EETS) for pituitary adenomas. METHODS: From November 2008 to August 2015, of the 286 patients who underwent EETS by the senior author, 208 were pituitary adenoma cases (146 non-functioning pituitary adenomas, 10 adrenocorticotropic hormone-secreting adenomas, 31 growth hormone-secreting adenomas, 17 prolactin-secreting adenomas, and 4 thyroid-stimulating hormone-secreting adenomas; 23 microadenomas, 174 macroadenomas, and 11 giant adenomas)...
November 2016: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/27760662/-surgical-treatment-of-pituitary-adenomas-in-childhood-and-adolescence
#12
J N Wang, L X Wang, W Lian, B Xing, Y Yao, M Feng, R Z Wang
Objective: To investigate the clinical characteristics and treatment of pituitary adenomas of childhood and adolescence. Methods: Thisarticle was a retrospective study of 140 pituitary adenomas of childhood and adolescence that was admitted into Peking Union Medical College Hospital from December 1987 to December 2014, whose clinical manifestations, hormone secretions, images, pathological types, surgical complications and follow-ups were studied. Results: A total of 58 (41.4%) males and 82 females (58.6%) were included, whose mean age was 12...
October 11, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27758132/a-novel-thyroid-hormone-receptor-beta-gene-mutation-g251v-in-a-thai-patient-with-resistance-to-thyroid-hormone-coexisting-with-pituitary-incidentaloma
#13
Chutintorn Sriphrapradang, Panudda Srichomkwun, Samuel Refetoff, Sunee Mamanasiri
A patient is reported with resistance to thyroid hormone beta caused by a novel THRB gene mutation and coexisting pituitary microadenoma. A 41-year-old Thai woman presented with elevated serum thyroid hormone levels and non-suppressed thyrotropin (TSH). Magnetic resonance imaging showed a 4 mm × 2 mm pituitary adenoma. Five of her relatives had similar thyroid tests abnormalities, but a sister had Graves' disease. Thyroperoxidase and thyroglobulin antibodies were positive in all affected family members, except for the proband's 4...
December 2016: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/27713172/blood-and-lung-micrornas-as-biomarkers-of-pulmonary-tumorigenesis-in-cigarette-smoke-exposed-mice
#14
Alberto Izzotti, Roumen Balansky, Gancho Ganchev, Marietta Iltcheva, Mariagrazia Longobardi, Alessandra Pulliero, Marta Geretto, Rosanna T Micale, Sebastiano La Maestra, Mark Steven Miller, Vernon E Steele, Silvio De Flora
Cigarette smoke (CS) is known to dysregulate microRNA expression profiles in the lungs of mice, rats, and humans, thereby modulating several pathways involved in lung carcinogenesis and other CS-related diseases. We designed a study aimed at evaluating (a) the expression of 1135 microRNAs in the lung of Swiss H mice exposed to mainstream CS during the first 4 months of life and thereafter kept in filtered air for an additional 3.5 months, (b) the relationship between lung microRNA profiles and histopathological alterations in the lung, (c) intergender differences in microRNA expression, and (d) the comparison with microRNA profiles in blood serum...
October 5, 2016: Oncotarget
https://www.readbyqxmd.com/read/27710986/the-epidemiology-of-pituitary-adenomas-in-a-community-based-hospital-a-retrospective-single-center-study-in-saudi-arabia
#15
Khalid S Aljabri, Samia A Bokhari, Faisal Y Assiri, Muneera A Alshareef, Patan M Khan
BACKGROUND: Data on pituitary adenoma (PA) prevalence in Saudi Arabia are scarce. OBJECTIVE: To estimate the epidemiology of PA in a well-defined population. DESIGN: Retrospective analysis. SETTING: Departments of Endocrinology and Radiology at King Fahad Armed Forces Hospital, Jeddah, Saudi Arabia. PATIENTS AND METHODS: Radiological and hormonal data of patients with pituitary adenoma by MRI were reviewed for the period January 2008 to December 2015...
September 2016: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/27708166/generation-of-an-inducible-colon-specific-cre-enzyme-mouse-line-for-colon-cancer-research
#16
Paul W Tetteh, Kai Kretzschmar, Harry Begthel, Maaike van den Born, Jeroen Korving, Folkert Morsink, Henner Farin, Johan H van Es, G Johan A Offerhaus, Hans Clevers
Current mouse models for colorectal cancer often differ significantly from human colon cancer, being largely restricted to the small intestine. Here, we aim to develop a colon-specific inducible mouse model that can faithfully recapitulate human colon cancer initiation and progression. Carbonic anhydrase I (Car1) is a gene expressed uniquely in colonic epithelial cells. We generated a colon-specific inducible Car1(CreER) knock-in (KI) mouse with broad Cre activity in epithelial cells of the proximal colon and cecum...
October 18, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27682355/surgical-outcomes-of-prolactinomas-in-recent-era-results-of-a-heterogenous-group
#17
Diane Donegan, John L D Atkinson, Mark Jentoft, Neena Natt, Tod B Nippoldt, Bradley Erickson, Fredric Meyer, Dana Erickson
OBJECTIVE: Prolactinomas are primarily treated with medical therapy. Given the efficacy of dopamine agonists (DAs), surgery has remained a second-line treatment option. Despite medical therapy, some tumors display resistance and/or patients maybe intolerant of DA and require alternative treatment options. We examined the indications, efficacy, and safety of pituitary surgery for the treatment of prolactinomas. METHODS: We performed a retrospective analysis of all patients who had surgery for a prolactinoma at our institution from January 1993 to October 2014...
January 2017: Endocrine Practice
https://www.readbyqxmd.com/read/27670143/pancreatic-neuroendocrine-microadenomatosis-a-case-report-of-cytology-and-histology-correlation
#18
Nguyen Vo, David W Cohen, Mary E Dillhoff, Ming Jin
Pancreatic neuroendocrine neoplasia is categorized by grade, size, and functional status. Neuroendocrine microadenoma (NEMA) is defined as a neuroendocrine tumor (NET) that measures less than 0.5 cm in diameter. Multiple NEMAs are termed neuroendocrine adenomatosis (NEMAtosis). The surgical pathology and clinical aspects of pancreatic NEMAtosis have been reported, but there has been no report regarding EUS-FNA cytology of NEMAtosis. We report a case of NEMAtosis with cytologic correlation and illustrate the diagnostic challenges and potential pitfalls...
February 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/27663587/alternative-lengthening-of-telomeres-in-primary-pancreatic-neuroendocrine-neoplasms-is-associated-with-aggressive-clinical-behavior-and-poor-survival
#19
Joo Young Kim, Jacqueline A Brosnan-Cashman, Soyeon An, Sung Joo Kim, Ki Byung Song, Min-Sun Kim, Mi-Ju Kim, Dae Wook Hwang, Alan K Meeker, Eunsil Yu, Song Cheol Kim, Ralph H Hruban, Christopher M Heaphy, Seung-Mo Hong
PURPOSE: Alternative lengthening of telomeres (ALT), a telomerase-independent telomere maintenance mechanism, is strongly associated with ATRX and DAXX alterations and occurs frequently in pancreatic neuroendocrine tumors (PanNETs). EXPERIMENTAL DESIGN: In a Korean cohort of 269 surgically resected primary PanNETs and 19 sporadic microadenomas, ALT status and nuclear ATRX and DAXX protein expression were assessed and compared with clinicopathologic factors. RESULTS: In PanNETs, ALT or loss of ATRX/DAXX nuclear expression was observed in 20...
September 23, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27642382/-hyperprolactinemia-unusual-association-between-peripheral-hypothyroidism-and-microprolactinoma
#20
Asmaa Chafik, Ghizlane El Mghari, Nawal El Ansari
We report a rare case of hyperprolactinemia revealing the association between peripheral hypothyroidism and prolactin pituitary macroadenomas. The patient was a 43-year old woman, presenting with spontaneous bilateral galactorrhea over a period of 1 year. Hyperprolactinemia was confirmed and etiologic investigation revealed peripheral hypothyroidism secondary to autoimmune thyroiditis. Therapy consisted of administration of thyroid hormone, with clinical stabilization and hormonal normalization three months later...
2016: Pan African Medical Journal
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