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Gastrointestinal medullary carcinomas

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https://www.readbyqxmd.com/read/29026467/chromogranin-a-as-a-biochemical-marker-for-neuroendocrine-tumors-a-single-center-experience-at-royal-hospital-oman
#1
Elham S Al-Risi, Fatma S Al-Essry, Waad-Allah S Mula-Abed
OBJECTIVES: To evaluate the significance of serum chromogranin A (CgA) status in patients with and without different neuroendocrine tumors (NETs) by conducting a retrospective assessment of the diagnostic utility and limitations of CgA as a biomarker for NETs in a tertiary care hospital in Oman. METHODS: We conducted a retrospective analysis of CgA requests referred to the Clinical Biochemistry Laboratory, Royal Hospital, Oman over a 24-month period (April 2012 to March 2014)...
September 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/28990511/sunitinib-in-the-treatment-of-thyroid-cancer
#2
Ferrari Silvia Martinaa, Centanni Marco, Virili Camilla, Miccoli Mario, Ferrari Paola, Ruffilli Ilaria, Ragusa Francesca, Antonelli Alessandro, Fallahi Poupak
BACKGROUND: Sunitinib (SU11248) is an oral, small-molecule, multi-targeted tyrosine kinase inhibitor (TKI), that inhibits receptors for platelet-derived growth factor (PDGF-Rs) and vascular endothelial growth factor receptors (VEGFRs), c-KIT, fms-related tyrosine kinase 3 (FLT3) and RET. The concurrent inhibition of these pathways reduces tumor vascularization and causes cancer cell apoptosis, inducing a tumor shrinkage. Sunitinib is approved for the treatment of imatinib-resistant gastrointestinal stromal tumor (GIST), renal carcinoma, and pancreatic neuroendocrine tumors...
October 6, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28898190/renal-tumors-of-childhood-radiologic-pathologic-correlation-part-2-the-2nd-decade-from-the-radiologic-pathology-archives
#3
Ellen M Chung, Grant E Lattin, Kimberly E Fagen, Andrew M Kim, Michael A Pavio, Adam J Fehringer, Richard M Conran
Malignant renal tumors account for 7% of childhood cancers, and Wilms tumors are by far the most common-but not in older children and adolescents. Among individuals in the latter half of their 2nd decade of life, renal cell carcinoma (RCC) is more common than Wilms tumor. The histopathologic spectrum of RCCs in children differs from that in adults. The most common subtype of RCC in children and adolescents is Xp11.2 translocation RCC, which is distinguished by hyperattenuation at nonenhanced computed tomography, a defined capsule, and associated retroperitoneal lymphadenopathy...
September 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28840050/gastric-medullary-carcinoma-with-sporadic-mismatch-repair-deficiency-and-a-tp53-r273c-mutation-an-unusual-case-with-wild-type-braf
#4
Brett M Lowenthal, Theresa W Chan, John A Thorson, Kaitlyn J Kelly, Thomas J Savides, Mark A Valasek
Medullary carcinoma has long been recognized as a subtype of colorectal cancer associated with microsatellite instability and Lynch syndrome. Gastric medullary carcinoma is a very rare neoplasm. We report a 67-year-old male who presented with a solitary gastric mass. Total gastrectomy revealed a well-demarcated, poorly differentiated carcinoma with an organoid growth pattern, pushing borders, and abundant peritumoral lymphocytic response. The prior cytology was cellular with immunohistochemical panel consistent with upper gastrointestinal/pancreaticobiliary origin...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28344687/disseminated-pancreatic-neuroendocrine-neoplasm-nen-with-an-uncommon-localisation-in-the-central-nervous-system-a-case-report
#5
Joanna Białkowska, Agnieszka Kolasińska-Ćwikła, Dorota Mroczkowska, Mariusz Sowa, Łukasz Grabarczyk, Wojciech Maksymowicz, Andrzej Cichocki, Jarosław B Ćwikła
BACKGROUND: Neuroendocrine neoplasms (NEN) are rare neoplasms that originate from neuroendocrine cells and are characterized by the potential of hormonal activity. Approximately 70% of these tumours are located in the gastrointestinal system (GI), followed by the bronchi, endocrine glands-like C cells of the thyroid (medullary carcinoma), the parasympathetic and sympathetic system (paragangliomas, pheochromocytoma) and other very rare locations. The prevalence of cerebral metastases in neuroendocrine tumours is estimated by various authors to be approximately 1...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28074747/liraglutide-a-glucagon-like-peptide-1-agonist-for-chronic-weight-management
#6
REVIEW
Kendra R Manigault, Maria Miller Thurston
OBJECTIVE: To review the efficacy and safety of liraglutide 3.0 mg for weight loss. DATA SOURCE: A literature search was performed using PubMed and MEDLINE from 2000 to 2016. The following key terms were used alone or in combination: glucagon-like peptide-1 agonist, liraglutide, obesity, overweight, and weight loss. Additional supporting literature was identified utilizing the reference lists of the preceding articles. STUDY SELECTION: Analyzed studies were published in English and investigated use of liraglutide and its impact on weight loss...
December 1, 2016: Consultant Pharmacist: the Journal of the American Society of Consultant Pharmacists
https://www.readbyqxmd.com/read/28034727/diagnosing-colorectal-medullary-carcinoma-interobserver-variability-and-clinicopathological-implications
#7
Lik Hang Lee, Rhonda K Yantiss, Eran Sadot, Bing Ren, Marcela Santos Calvacanti, Jaclyn F Hechtman, Sinisa Ivelja, Be Huynh, Yue Xue, Tatiana Shitilbans, Hamza Guend, Zsofia K Stadler, Martin R Weiser, Efsevia Vakiani, Mithat Gönen, David S Klimstra, Jinru Shia
Colorectal medullary carcinoma, recognized by the World Health Organization as a distinct histologic subtype, is commonly regarded as a specific entity with an improved prognosis and unique molecular pathogenesis. A fundamental but as yet unaddressed question, however, is whether it can be diagnosed reproducibly. In this study, by analyzing 80 colorectal adenocarcinomas whose dominant growth pattern was solid (thus encompassing medullary carcinoma and its mimics), we provided a detailed description of the morphological spectrum from "classic medullary histology" to nonmedullary poorly differentiated histologies and demonstrated significant overlapping between categories...
April 2017: Human Pathology
https://www.readbyqxmd.com/read/27628324/mash1-is-highly-specific-for-neuroendocrine-carcinomas-an-immunohistochemical-evaluation-on-normal-and-various-neoplastic-tissues
#8
David Altree-Tacha, Jillian Tyrrell, Faqian Li
CONTEXT: -High-grade neuroendocrine carcinomas and carcinoids can arise in different sites such as lung, gastrointestinal tract, prostate, and skin. Classic neuroendocrine markers such as CD56, synaptophysin, and chromogranin cannot distinguish carcinoids from high-grade neuroendocrine carcinomas. Recently, mouse monoclonal mASH1 has been shown to help discriminate carcinoids from high-grade neuroendocrine carcinomas in various neoplastic sites. To date, there have been no comprehensive immunohistochemistry studies with mASH1 on nonneuroendocrine neoplasms...
February 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/27184481/loss-of-ini1-expression-in-colorectal-carcinoma-is-associated-with-high-tumor-grade-poor-survival-brafv600e-mutation-and-mismatch-repair-deficiency
#9
Jennifer Wang, Juliana Andrici, Loretta Sioson, Adele Clarkson, Amy Sheen, Mahtab Farzin, Christopher W Toon, John Turchini, Anthony J Gill
SMARCB1 is a tumor suppressor gene that encodes for the protein INI1. SMARCB1 is commonly inactivated and INI1 correspondingly shows loss of expression in a range of malignant neoplasms including rhabdoid tumors, renal medullary carcinomas, and epithelioid sarcomas. Loss of INI1 expression has recently been reported in occasional gastrointestinal adenocarcinomas. We sought to investigate the incidence and clinicopathological significance of INI1 loss in colorectal adenocarcinoma (CRC). Immunohistochemistry for INI1 was performed in tissue microarray (TMA) format on a well-characterized and unselected cohort of CRCs undergoing surgical resection...
September 2016: Human Pathology
https://www.readbyqxmd.com/read/27153782/multiple-endocrine-neoplasia-syndromes-a-comprehensive-imaging-review
#10
REVIEW
Joseph R Grajo, Raj Mohan Paspulati, Dushyant V Sahani, Avinash Kambadakone
MEN1, MEN2, and MEN4 comprise a series of familial disorders involving the simultaneous occurrence of tumors in more than one endocrine organ, collectively known as multiple endocrine neoplasia. Patients with this family of disorders develop tumors of the parathyroid gland, pancreas, pituitary gland, adrenal gland, and thyroid gland, along with miscellaneous neuroendocrine tumors of the respiratory and gastrointestinal tracts. Although some patients undergo early prophylactic surgical management, particularly in the setting of familial medullary thyroid carcinoma, many develop tumors later in life...
May 2016: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/26645011/esophageal-recurrence-of-medullary-thyroid-carcinoma
#11
Jose Luis Muñoz de Nova, Agnieszka Dworzynska, Leyre Lorente-Poch, Juan Jose Sancho, Antonio Sitges-Serra
Medullary thyroid carcinoma (MTC) metastasizes to the regional lymph nodes and to the lungs, liver and bones. Only one case of recurrence of MTC involving the upper gastrointestinal tract has been reported so far. We describe the case of a 38-year-old woman with MTC, who developed an upper esophageal submucosal recurrence after two previous local recurrences treated surgically and one ethanol injection. After resection of the right lateral esophageal wall, calcitonin dropped by 60% and showed a doubling time >1 year...
December 2015: Gland Surgery
https://www.readbyqxmd.com/read/26260744/thyroid-disorders-and-gastrointestinal-and-liver-dysfunction-a-state-of-the-art-review
#12
REVIEW
Angelos Kyriacou, John McLaughlin, Akheel A Syed
Thyroid disorders commonly impact on the gastrointestinal system and may even present with gastrointestinal symptoms in isolation; for example, metastatic medullary thyroid carcinoma typically presents with diarrhoea. Delays in identifying and treating the underlying thyroid dysfunction may lead to unnecessary investigations and treatment, with ongoing morbidity, and can potentially be life-threatening. Similarly, gastrointestinal diseases can impact on thyroid function tests, and an awareness of the concept and management of non-thyroidal illness is necessary to avoid giving unnecessary thyroid therapies that could potentially exacerbate the underlying gastrointestinal disease...
October 2015: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/26169212/adverse-effects-associated-with-newer-diabetes-therapies
#13
REVIEW
Oluwaranti F Akiyode, Adebola A Adesoye
The increasing number of newer type 2 diabetes therapies has allowed providers an increased armamentarium for the optimal management of patients with diabetes. In fact, these newer agents have unique benefits in the management of type 2 diabetes. However, they are also associated with certain adverse effects. This review article aims to describe the notable adverse effects of these newer antidiabetic therapies including the glucagon-like peptide 1 receptor agonists, dipeptidyl peptidase-4 inhibitors, and the sodium-glucose cotransporter 2 inhibitors...
April 2017: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/26158607/conventional-and-nuclear-medicine-imaging-in-ectopic-cushing-s-syndrome-a-systematic-review
#14
REVIEW
Andrea M Isidori, Emilia Sbardella, Maria Chiara Zatelli, Mara Boschetti, Giovanni Vitale, Annamaria Colao, Rosario Pivonello
CONTEXT: Ectopic Cushing's Syndrome (ECS) can be a diagnostic challenge with the hormonal source difficult to find. This study analyzes the accuracy of imaging studies in ECS localization. EVIDENCE ACQUISITION: Systematic review of medical literature for ECS case series providing individual patient data on at least one conventional imaging technique (computed tomography [CT]/magnetic resonance imaging) and one of the following: 111In-pentetreotide (OCT), 131I/123I-metaiodobenzylguanidine, 18Ffluoro-2-deoxyglucose-positron emission tomography (FDG-PET), 18F-fluorodopa-PET (F-DOPA-PET), 68Ga- DOTATATE-PET/CT or 68Ga-DOTATOC-PET/CT scan (68Gallium-SSTR-PET/CT)...
September 2015: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/26152651/sorafenib-in-the-treatment-of-thyroid-cancer
#15
Silvia Martina Ferrari, Ugo Politti, Roberto Spisni, Gabriele Materazzi, Enke Baldini, Salvatore Ulisse, Paolo Miccoli, Alessandro Antonelli, Poupak Fallahi
Sorafenib has been evaluated in several Phase II and III studies in patients with locally advanced/metastatic radioactive iodine-refractory differentiated thyroid carcinomas (DTCs), reporting partial responses, stabilization of the disease and improvement of progression-free survival. Best responses were observed in lung metastases and minimal responses in bone lesions. On the basis of these studies, sorafenib was approved for the treatment of metastatic DTC in November 2013. Few studies suggested that reduction of thyroglobulin levels, or of average standardized uptake value at the fluorodeoxyglucose-PET, could be helpful for the identification of responding patients; but further studies are needed to confirm these results...
2015: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/25944066/-multiple-endocrine-neoplasia-type-2b
#16
Karijn J Pijnenburg-Kleizen, Hanneke M van Santen, David A Koolen, Hedi L Claahsen-van der Grinten
BACKGROUND: Multiple endocrine neoplasia type 2b (MEN2B) is a rare syndrome characterised by the occurrence of medullary thyroid carcinoma at a young age in all patients, and phaeochromocytoma at a later age in half of the patients. Once a medullary thyroid carcinoma causes symptoms, it has usually already metastasised to the lymph nodes and curative treatment is seldom possible at that stage. CASE DESCRIPTION: We present two patients who had phenotypical characteristics of the MEN2B syndrome from a young age: mucosal neuromas, ptosis, a marfanoid habitus, gastrointestinal problems and crying without tears...
2015: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/25815174/calcitonin-the-forgotten-hormone-does-it-deserve-to-be-forgotten
#17
Arnold J Felsenfeld, Barton S Levine
Calcitonin is a 32 amino acid hormone secreted by the C-cells of the thyroid gland. Calcitonin has been preserved during the transition from ocean-based life to land dwellers and is phylogenetically older than parathyroid hormone. Calcitonin secretion is stimulated by increases in the serum calcium concentration and calcitonin protects against the development of hypercalcemia. Calcitonin is also stimulated by gastrointestinal hormones such as gastrin. This has led to the unproven hypothesis that postprandial calcitonin stimulation could play a role in the deposition of calcium and phosphate in bone after feeding...
April 2015: Clinical Kidney Journal
https://www.readbyqxmd.com/read/25318585/novel-therapies-for-thyroid-cancer
#18
REVIEW
Jolanta Krajewska, Barbara Jarzab
INTRODUCTION: New therapeutic options for both differentiated thyroid cancer (DTC) and medullary thyroid cancer (MTC) have opened up during the past few years, as the key role of tyrosine kinases in the pathogenesis of thyroid carcinoma has been proved. Recently, two tyrosine kinase inhibitors (TKIs) targeting VEGFR vandetanib (Caprelsa) and cabozantinib (Cometriq) have been approved for advanced MTC, whereas, sorafenib (Nexavar) has been accepted to treat late-stage of DTC. Their efficacy was demonstrated in Phase III studies, compared to placebo; each of them significantly prolonged the progression-free survival...
December 2014: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/23846576/a-92-gene-cancer-classifier-predicts-the-site-of-origin-for-neuroendocrine-tumors
#19
MULTICENTER STUDY
Sarah E Kerr, Catherine A Schnabel, Peggy S Sullivan, Yi Zhang, Vivian J Huang, Mark G Erlander, Elena F Brachtel, Sarah M Dry
A diagnosis of neuroendocrine carcinoma is often morphologically straight-forward; however, the tumor site of origin may remain elusive in a metastatic presentation. Neuroendocrine tumor subtyping has important implications for staging and patient management. In this study, the novel use and performance of a 92-gene molecular cancer classifier for determination of the site of tumor origin are described in a series of 75 neuroendocrine tumors (44 metastatic, 31 primary; gastrointestinal (n=12), pulmonary (n=22), Merkel cell (n=10), pancreatic (n=10), pheochromocytoma (n=10), and medullary thyroid carcinoma (n=11))...
January 2014: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/23728519/comparison-of-ga-68-dota-tate-and-ga-68-dota-lan-pet-ct-imaging-in-the-same-patient-group-with-neuroendocrine-tumours-preliminary-results
#20
COMPARATIVE STUDY
Emre Demirci, Meltem Ocak, Levent Kabasakal, Ahmet Araman, Yildiz Ozsoy, Bedii Kanmaz
INTRODUCTION: Recent studies have suggested that PET imaging with Ga-68-labelled DOTA-somatostatin analogues such as octreotide and octreotate is useful in diagnosing neuroendocrine tumours (NETs) and has superior value over both computed tomography and planar and SPECT somatostatin receptor scintigraphy. PURPOSE: The aim of the present study was to evaluate the role of Ga-68 DOTA-lanreotide (Ga-68-DOTA-LAN) in patients with somatostatin receptor (sst)-expressing tumours and to compare the results of Ga-68 DOTA-D-Phe1-Tyr3-octreotate (Ga-68-DOTA-TATE) in the same patient population...
August 2013: Nuclear Medicine Communications
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