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https://www.readbyqxmd.com/read/29450811/debulking-surgery-of-pituitary-adenoma-as-a-strategy-to-facilitate-definitive-stereotactic-radiosurgery
#1
Neil Forster, Ronald Warnick, Vinita Takiar, Luke Pater, John Breneman
In patients with pituitary adenomas (PA) who are unable to undergo complete surgical resection, radiation therapy (RT), specifically stereotactic radiosurgery (SRS), results in excellent local control. However, the utility of radiosurgery may be limited by the proximity of the lesion to the optic chiasm (OC). We evaluate the efficacy of debulking surgery in increasing the PA-OC separation to convert patients into SRS candidates. From 2007 to 2015, 31 patients with PA < 2 mm from the OC underwent debulking surgery followed by RT within 2 years of resection...
February 15, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29450259/hand-assisted-laparoscopic-partial-nephrectomy-for-large-renal-carcinoma-with-succinate-dehydrogenase-deficiency
#2
Ann Buhl Bersang, Sarah Bube, Mikkel Fode, Nessn H Azawi
Background: Germline mutations in succinate dehydrogenase (SDH) are associated with multifocal cancers: pituitary gland tumors, pheochromocytomas, paragangliomas, gastrointestinal stromal tumors, and renal-cell carcinomas (RCCs). SDH-deficient renal-cell carcinoma (SDH-RCC) was first identified in 2004 as an inherited kidney cancer with mutations in the SDH gene. SDH consists of A, B, C, and D units. Mutation in the SDHB gene is the most common mutation in SDH-deficient RCCs. Case Presentation: We report a case of a 51-year-old healthy man diagnosed with SDHB germline mutation and RCCs...
2018: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/29449735/alk-positive-adenocarcinoma-of-the-lung-expressing-neuroendocrine-markers-and-presenting-as-a-pituitary-adenoma
#3
M C Mengoli, F Bertolini, M Maur, F Barbieri, L Longo, P Gasparri, M Tiseo, G Rossi
We report an ALK-rearranged adenocarcinoma of the lung presenting as a pituitary metastasis, clinically simulating a pituitary adenoma. The patient, a 50 year-old, former-smoking woman was admitted with a Parinaud's syndrome characterized by progressive oculomotor impairment of visual verticality, bitemporal hemianopsia and nystagmus. Imaging studies showed a sellar tumor and the biopsy revealed a TTF-1 and napsin positive lung adenocarcinoma strongly expressing synaptophysin and CD56, also harboring ALK rearrangement...
December 2017: Pathologica
https://www.readbyqxmd.com/read/29448805/differentiating-skull-base-chordomas-and-invasive-pituitary-adenomas-with-conventional-mri
#4
Ankang Gao, Jie Bai, Jingliang Cheng, Xiao Cheng, Shujian Li, Zanxia Zhang, Yong Zhang
Background It is difficult to distinguish between invasive pituitary adenomas (IPAs) and skull base chordomas based on tumor location and clinical manifestations. Purpose To investigate the value of the apparent diffusion coefficient (ADC), T2-weighted (T2W) imaging, and dynamic contrast enhancement (DCE) in differentiating skull base chordomas and IPAs. Material and Methods Data for 21 patients with skull base chordomas and 27 patients with IPAs involving the paranasal sinus were retrospectively reviewed, and all diagnoses were pathologically confirmed...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29438167/insm1-is-a-sensitive-and-specific-marker-of-neuroendocrine-differentiation-in-head-and-neck-tumors
#5
Lisa M Rooper, Justin A Bishop, William H Westra
The head and neck is the site of a wide and sometimes bewildering array of neuroendocrine (NE) tumors. Although recognition of NE differentiation may be necessary for appropriate tumor classification and treatment, traditional NE markers such as synaptophysin, chromogranin, and CD56 are not always sufficiently sensitive or specific to make this distinction. Insulinoma-associated protein 1 (INSM1) is a novel transcription factor that has recently demonstrated excellent sensitivity and specificity for NE differentiation in various anatomic sites, but has not yet been extensively evaluated in tumors of the head and neck...
February 12, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29435973/inhibition-of-experimental-small-cell-and-non-small-cell-lung-cancers-by-novel-antagonists-of-growth-hormone-releasing-hormone
#6
Haibo Wang, Xianyang Zhang, Irving Vidaurre, Renzhi Cai, Wei Sha, Andrew V Schally
We investigated the effects of novel antagonists of growth hormone releasing hormone (GHRH), MIA602 and MIA690, on three human small cell lung cancer (SCLC) lines (H446, DMS53 and H69) and two non-SCLC (NSCLC) lines (HCC827 and H460). In vitro exposure of cancer cells to these GHRH antagonists significantly inhibited cell viability, increased cell apoptosis, decrease cellular levels of cAMP and reduced cell migration. In vivo, the antagonists strongly inhibited tumor growth in xenografted nude mice models. Subcutaneous administration of MIA602 at the dose of 5μg/day for 4-8 weeks reduced the growth of HCC827, H460 and H446 tumors by 69...
February 13, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29435035/expression-of-proteins-associated-with-epithelial-mesenchymal-transition-in-esophageal-squamous-cell-carcinoma
#7
Tian Zhang, Hao Li, Yang Zhang, Pei Wang, Huijie Bian, Zhi-Nan Chen
Cluster of differentiation 147 (CD147), pituitary tumor transforming gene (PTTG) and CD44v6 are proteins involved in the epithelial-mesenchymal transition (EMT). To investigate the prognostic value of CD147 and PTTG, and CD44v6 expression in esophageal squamous cell carcinoma (ESCC), tissue microarray specimens from 76 patients with ESCC were evaluated by immunohistochemistry staining and scored by intensity and proportion of positive areas. Expression levels of CD147, PTTG and CD44v6 were higher in tumor tissues than in matched adjacent tissues...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434339/epidemiology-and-biomarker-profile-of-pituitary-adenohypophysial-tumors
#8
Ozgur Mete, Amber Cintosun, Irwin Pressman, Sylvia L Asa
Recent studies have reported the prevalence of pituitary tumors to be ~1/1000 population. Many are prolactin-producing tumors that are managed medically, however, the epidemiology of surgically resected pituitary adenohypophysial neuroendocrine tumors has not been reported in a large series with detailed characterization. We reviewed 1055 adenohypophysial tumors from 1169 transsphenoidal resections from the pathology files of University Health Network, Toronto, 2001-2016. Tumors were characterized by immunohistochemical localization of transcription factors (Pit-1, ERα, SF-1, Tpit), hormones (adrenocorticotropin, growth hormone, prolactin, β-thyrotropin, β-folliculotropin, β-luteotropin, α-subunit), and other biomarkers (keratins, Ki67, p27, FGFR4)...
February 12, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29433055/presurgical-treatment-with-somatostatin-analogues-in-growth-hormone-secreting-pituitary-adenomas-a-long-term-single-center-experience
#9
Liang Lv, Yu Hu, Peizhi Zhou, Shizhen Zhang, Senlin Yin, Nannan Zhang, Shu Jiang
OBJECTIVE: Acromegalic patients with macro- or giant adenomas often had poor prognosis after surgery. Somatostatin analogues (SSAs) show high effectiveness in both tumor shrinkage and serum GH reduction. But the role of SSAs in pre-surgical treatment and the management among macro- and giant adenomas remains controversial. PATIENTS AND METHODS: A total of 100 acromegalic patients with macro- or giant adenomas that underwent surgery in our institution between January 2010 and December 2016 were enrolled in the current retrospective study...
February 6, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29432944/expression-of-mmp-9-pttg-hmga2-and-ki-67-in-acth-secreting-pituitary-tumors-and-their-association-with-tumor-recurrence
#10
Xiaohai Liu, Ming Feng, Ye Zhang, Congxin Dai, Bowen Sun, Xinjie Bao, Kan Deng, Yong Yao, Renzhi Wang
OBJECTIVE: MMP-9, PTTG, and HMGA2 play important roles in the tumorigenesis of adrenocorticotrophic hormone (ACTH)-secreting pituitary tumors, but their associations with tumor recurrence after transsphenoidal adenomectomy remain unclear. The aim of the study was to investigate the immunohistochemical expression profiles of MMP-9, PTTG, HMGA2, and Ki-67 in recurrent and non-recurrent ACTH-secreting pituitary tumors and to identify their associations with tumor behavior and recurrence status...
February 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29429351/-genetic-factors-in-hypopituitarism-the-role-of-transcription-factors-in-pituitary-hormone-deficiency
#11
Judit Tőke, Rita Bertalan, Péter Gergics, Zita Halász
Developmental disorders affecting the hypothalamic-pituitary system can result in pituitary hormone deficiency showing a diverse clinical presentation. A significant majority of these disorders are closely linked to defects in transcription factor genes which play a major role in pituitary development. Those affecting the early phase of organogenesis typically lead to complex conditions affecting the pituitary as well as structures in the central nervous system. Transcription factors involved in the late phase can result in combined but rarely isolated pituitary hormone deficiency without extra-pituitary manifestation...
February 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29429349/-the-role-of-mirnas-in-the-pathogenesis-of-pituitary-adenomas
#12
Kinga Németh, Ottó Darvasi, Nikolette Szücs, Sándor Czirják, Henriett Butz
MicroRNAs (miRNAs) are short, single stranded RNA molecules which play regulatory roles through posttranscriptional regulation of their target genes. Based on our current knowledge, more than 30% of the human protein-coding genes are regulated by miRNAs, hence influencing basic cellular mechanisms including cell proliferation, differentiation and cell death. Differential miRNA expression pattern has been detected in many different types of tumors and, recently, several publications have referred to miRNAs as potential therapeutic targets...
February 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29429125/cyberknife-robotic-radiosurgery-in-the-multimodal-management-of-acromegaly-patients-with-invasive-macroadenoma-a-single-center-s-experience
#13
Elisa Sala, Justin M Moore, Alvaro Amorin, Hector Martinez, Aprotim C Bhowmik, Layton Lamsam, Steven Chang, Scott G Soltys, Laurence Katznelson, Griffith R Harsh
Surgery is the primary treatment for acromegaly. However, surgery may not be curative of some tumors, particularly invasive macroadenomas. Adjuvant radiation, specifically robotic stereotactic radiosurgery (rSRS), may improve the endocrine outcome. We retrospectively reviewed hormonal and radiological data of 22 acromegalic patients with invasive macroadenomas treated with rSRS at Stanford University Medical Center between 2000 and 2016. Prior to treatment, the tumor's median maximal diameter was 19 mm (2...
February 10, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29428407/subclinical-haemorrhage-in-non-functional-adenomas
#14
H Cebula, E Fasciglione, M D N Santin, J Todeschi, F Severac, F Proust, J-L Dietemann, B Goichot
AIM: The prevalence and risk factors of subclinical haemorrhage on non-functional adenomas (NFA) remain controversial. The primary aim of our study was to assess the incidence of subclinical haemorrhage (SH) and the secondary objectives were to evaluate the risk factors of SH and the impact of SH on pituitary function at diagnosis. PATIENTS AND METHODS: This retrospective transversal analysis included 95 patients between January 2012 and December 2014. The patients included in this series were all adults (>18 years of age), who presented a non-functional adenoma confirmed by an endocrinological evaluation and on dedicated MRI pituitary imaging...
February 7, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29417847/clinical-outcomes-of-endoscopic-versus-microscopic-trans-sphenoidal-surgery-for-large-pituitary-adenoma
#15
Hamideh Akbari, Mojtaba Malek, Mohammad Ghorbani, Seyed Mahmoud Ramak Hashemi, Mohammad Ebrahim Khamseh, Ali Zare Mehrjardi, Zahra Emami, Ameneh Ebrahim Valojerdi
OBJECTIVE: To compare clinical outcomes of large pituitary adenomas (≥3 cm in maximum diameter), operated on by Endoscopic Transsphenoidal Surgery (ETS), versus Microscopic Transsphenoidal Surgery (MTS). METHODS: Medical records and MRI Scans of patients with a diagnosis of pituitary adenoma for whom transphenoidal surgery was done were reviewed. Complete pre and post-operative data were available for 121 patients. Thirty five patients had large pituitary adenoma and were enrolled in this study...
February 8, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29417370/treatment-of-adult-growth-hormone-deficiency-with-human-recombinant-growth-hormone-an-update-on-current-evidence-and-critical-review-of-advantages-and-pitfalls
#16
REVIEW
Ana M Ramos-Leví, Mónica Marazuela
Adult-onset growth-hormone (GH) deficiency (GHD) is a rare disorder, which most commonly results from pituitary or peripituitary tumors and their treatment, and is characterized by alterations in body composition, carbohydrate and lipid metabolism, bone mineral density, cardiovascular risk profile and quality of life, all of which may contribute to an increased morbidity and mortality. Since recombinant human GH (rhGH) became available in 1985, several studies have provided evidence of its beneficial effects, despite the potential risk of developing adverse effects, and much clinical experience has been accumulated...
February 7, 2018: Endocrine
https://www.readbyqxmd.com/read/29416715/long-term-follow-up-and-novel-splice-donor-mutation-in-men1-in-a-chinese-family
#17
Minghao Li, Qianqian Liu, Peihua Liu, Xiaoping Yi, Xiao Guan, Anze Yu, Longfei Liu, Feizhou Zhu
Heterozygous germline mutation of the MEN1 tumor suppressor gene is responsible for multiple endocrine neoplasia type 1. Parathyroid and thoracic neuroendocrine tumor specimens and DNA from two Han Chinese MEN1 family patients were analyzed using whole exome and Sanger sequencing. The proband (II-3) was sequentially diagnosed with pituitary adenoma, pancreatic tumor, adrenal cortical tumor, abdominal lipoma, and parathyroid adenoma during the 6-year follow-up. The son of the proband (III-6) was also diagnosed with a thoracic neuroendocrine tumor and a parathyroid adenoma during this period...
January 5, 2018: Oncotarget
https://www.readbyqxmd.com/read/29415979/autopsy-case-report-of-intravascular-large-b-cell-lymphoma-with-neoplastic-pd-l1-expression
#18
Ayako Sakakibara, Yuichiro Inagaki, Eiki Imaoka, Eri Ishikawa, Satoko Shimada, Kazuyuki Shimada, Yuka Suzuki, Shigeo Nakamura, Akira Satou, Kei Kohno
Intravascular large B-cell lymphoma (IVLBCL) is a rare and clinically distinctive entity characterized by the almost exclusive growth of large cells within the lumen of blood vessels in particular capillaries. Reports of this peculiar disease, do not commonly address the PD-L1 expression on IVLBCL tumor cells. Here, we describe a 51-year-old Japanese woman who presented with rapidly progressive cognitive decline and higher brain dysfunction. CT scan and MRI revealed multiple ischemic foci in the cerebral hemispheres, ground-glass opacity in the lungs, and splenomegaly...
February 8, 2018: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/29410024/dna-methylation-profiling-in-nonfunctioning-pituitary-adenomas
#19
Paulina Kober, Joanna Boresowicz, Nataliia Rusetska, Maria Maksymowicz, Krzysztof Goryca, Jacek Kunicki, Wiesław Bonicki, Janusz Aleksander Siedlecki, Mateusz Bujko
Nonfunctioning pituitary adenomas (NFPAs) are among the most frequent intracranial tumors but their molecular background, including changes in epigenetic regulation, remains poorly understood. We performed genome-wide DNA methylation profiling of 34 NFPAs and normal pituitary samples. Methylation status of the selected genomic regions and expression level of corresponding genes were assessed in a group of 75 patients. NFPAs exhibited distinct global methylation profile as compared to normal pituitary. Aberrant DNA methylation appears to contribute to deregulation of the cancer-related pathways as shown by preliminary functional analysis...
February 1, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29408649/endoscopic-endonasal-transphenoidal-approachvisual-outcome-in-pituitary-macroadenomas-quantitative-assessment-with-diffusion-tensor-imaging-dti-early-and-long-term-results
#20
Ihsan Anik, Yonca Anik, Burak Cabuk, Melih Caklili, Dilara Pirhan, Onural Ozturk, Musa Cirak, Savas Ceylan
BACKGROUND: Postoperative visual recovery in patients with pituitary adenoma can be influenced by the duration of symptoms, age, and tumor volume. Diffusion tensor imaging (DTI) allows visualization of white matter structure along with quantitative information. The aims of our study were to predict the visual recovery process in the early and long-term periods and to define the parameters affecting the recovery course. MATERIAL METHODS: A total of 200 patients with pituitary macroadenomas underwent endoscopic transphenoidal surgery between January 2009 and July 2016...
February 2, 2018: World Neurosurgery
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