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https://www.readbyqxmd.com/read/28918544/tumor-regression-grading-of-gastrointestinal-cancers-after-neoadjuvant-therapy
#1
REVIEW
Rupert Langer, Karen Becker
Neoadjuvant therapy has been successfully introduced in the treatment of locally advanced gastrointestinal malignancies, particularly esophageal, gastric, and rectal cancers. The effects of preoperative chemo- or radiochemotherapy can be determined by histopathological investigation of the resection specimen following this treatment. Frequent histological findings after neoadjuvant therapy include various amounts of residual tumor, inflammation, resorptive changes with infiltrates of foamy histiocytes, foreign body reactions, and scarry fibrosis...
September 16, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28916847/endoscopic-resection-of-gastric-gastrointestinal-stromal-tumors-originating-from-the-muscularis-propria-layer-in-north-america-methods-and-feasibility-data
#2
Iman Andalib, Daniel Yeoun, Ramesh Reddy, Steve Xie, Shahzad Iqbal
INTRODUCTION: Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. In recent years, endoscopic procedures such as endoscopic enucleation (EN) and endoscopic full-thickness resection (EFTR) have been used to resect GISTs. This study aimed to investigate the clinical efficacy, safety, and feasibility of endoscopic resection of GISTs in a North American population. METHODS: A total of 25 patients with gastric submucosal lesions (SML) underwent endoscopic resection from December 2014 to April 2016...
September 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28916623/efficacy-of-radioembolization-with-holmium-166-microspheres-in-salvage-patients-with-liver-metastases-a-phase-2-study
#3
Jip F Prince, Maurice A A J van den Bosch, J F W Nijsen, Maarten L J Smits, Andor F van den Hoven, Stavros Nikolakopoulos, Frank J Wessels, Rutger C G Bruijnen, Manon Braat, Bernard A Zonnenberg, Marnix Lam
Rationale: Radioembolization of liver malignancies with holmium-166 (166Ho) microspheres has been shown safe in a phase 1 dose-escalation study. The purpose of this study was to investigate the efficacy of 166Ho radioembolization. Methods: In this prospective single-arm study, 56 patients were enrolled, all with liver metastases refractory to systemic therapy and ineligible for surgical resection. Radioembolization was performed with a projected average absorbed dose of 60 Gy to the liver (equal to 3.8 GBq/kg liver tissue)...
September 15, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28916345/is-a-technetium-99m-macroaggregated-albumin-scan-essential-in-the-workup-for-selective-internal-radiation-therapy-with-yttrium-90-an-analysis-of-532-patients
#4
Lidia Sancho, Macarena Rodriguez-Fraile, Jose Ignacio Bilbao, Carmen Beorlegui Arteta, Mercedes Iñarrairaegui, Veronica Moran, Bruno Sangro
PURPOSE: To determine if baseline patient, tumor, and pretreatment evaluation characteristics could help identify patients who require technetium-99m ((99m)Tc) macroaggregated albumin ((99m)Tc MAA) imaging before selective internal radiation therapy (SIRT). MATERIALS AND METHODS: In this retrospective analysis, 532 consecutive patients with primary (n = 248) or metastatic (n = 284) liver tumors were evaluated between 2006 and 2015. Variables were compared between patients in whom (99m)Tc MAA imaging results contraindicated/modified SIRT administration with yttrium-90 ((90)Y) resin microspheres and those who were treated as initially planned...
September 13, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28916191/%C3%AE-the-hydro-alcoholic-extracts-of-sardinian-wild-thistles-onopordum-spp-inhibit-tnf%C3%AE-induced-il-8-secretion-and-nf-%C3%AE%C2%BAb-pathway-in-human-gastric-epithelial-ags-cells
#5
Arianna Marengo, Marco Fumagalli, Cinzia Sanna, Andrea Maxia, Stefano Piazza, Cecilia Cagliero, Patrizia Rubiolo, Enrico Sangiovanni, Mario Dell'Agli
ETHNOPHARMACOLOGICAL RELEVANCE: Thistles species (Family: Compositae) are traditionally used in the Mediterranean area, particularly in Sardinia. They are usually gathered from the wild and used for both food and therapeutic purposes, including gastrointestinal disorders. AIM OF THE STUDY: This work aims to evaluate the anti-inflammatory activity of eight wild thistles from Sardinia, in an in vitro model of gastric inflammation, and to identify the major active compounds in the extracts...
September 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28915580/molecular-and-functional-characterization-of-a-new-3-end-kit-juxtamembrane-deletion-in-a-duodenal-gist-treated-with-neoadjuvant-imatinib
#6
Vittorio Perfetti, Erik Laurini, Suzana Aulić, Maurizio Fermeglia, Roberta Riboni, Marco Lucioni, Elena Dallera, Sara Delfanti, Luigi Pugliese, Francesco Saverio Latteri, Andrea Pietrabissa, Sabrina Pricl
Gastrointestinal stromal tumors (GISTs) are the most common mesenchymal tumors of the gastrointestinal tract. GISTs express the receptor tyrosine kinase KIT, and the majority of GISTs present KIT gain-of-function mutations that cluster in the 5' end of the receptor juxtamembrane domain. On the other hand, little information is known about GISTs carrying mutations in the 3' end of the KIT juxtamembrane domain. Here we report and discuss a clinical case of localized duodenal GIST whose molecular characterization revealed the presence of a new 21 nucleotide/7 amino acid deletion in the 3' end of KIT juxtamembrane domain (Δ574-580)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915565/pkc%C3%AE-utility-in-diagnosing-c-kit-dog-1-double-negative-gastrointestinal-stromal-tumors
#7
Attila Kövecsi, Ioan Jung, Zoltan Szentirmay, Tivadar Bara, Tivadar Bara, Daniel Popa, Simona Gurzu
BACKGROUND: The aim of this study was to evaluate the diagnosis value of an immunohistochemical (IHC) panel of three antibodies for the diagnosis of gastrointestinal stromal tumors (GISTs). MATERIAL AND METHODS: In 80 consecutive GISTs without lymph node metastases, the IHC examinations were performed using the antibodies CD117 (c-KIT), DOG-1 and c-theta (PKCθ) protein. The diagnostic value of PKCθ in c-KIT/DOG-1 negative GISTs has been explored in fewer than 10 Medline-indexed papers...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28914399/surgery-for-duodenal-gastrointestinal-stromal-tumors-a-single-center-experience
#8
Ping Chen, Tianqiang Song, Xin Wang, Hongyuan Zhou, Ti Zhang, Qiang Wu, Dalu Kong, Yunlong Cui, Huikai Li, Qiang Li
BACKGROUND: The duodenal gastrointestinal stromal tumors (GISTs) are an extremely rare subset of GISTs. The optimal surgical procedure remains not well defined. AIMS: We assessed the surgical approach and long-term outcomes of patients with duodenal GISTs who underwent limited resection (LR) versus pancreaticoduodenectomy (PD). METHODS: From November 2005 to January 2016, 64 consecutive patients with duodenal GISTs in a single center were retrospectively analyzed...
September 15, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28913125/bilateral-ovarian-metastasis-of-a-klatskin-tumor-a-rare-case
#9
Sefa Kurt, Çağnur Ulukuş, Seher Nazlı Kazaz, İbrahim Astarcıoğlu
Metastatic carcinomas of the ovary have an important place in all ovarian cancers and tumors. They can originate from many organs and systems and may metastasize to the ovary. The most common primary origin of metastasis is the gastrointestinal tract and then breast tissue. Cholangiocellular carcinomas involving the junction of the right and left bile ducts are called Klatskin tumors, and their metastases to the ovaries are very rare. A woman aged 54 years who had been treated previously for Klatskin tumor was admitted to our clinic due to bilateral ovarian masses and high serum calcium 19-9 levels...
December 2016: Turk J Obstet Gynecol
https://www.readbyqxmd.com/read/28912908/gastrin-releasing-peptide-and-glucose-metabolism-following-pancreatitis
#10
Sayali A Pendharkar, Marie Drury, Monika Walia, Murray Korc, Maxim S Petrov
BACKGROUND: Gastrin-releasing peptide (GRP) is a pluripotent peptide that has been implicated in both gastrointestinal inflammatory states and classical chronic metabolic diseases such as diabetes. Abnormal glucose metabolism (AGM) after pancreatitis, an exemplar inflammatory disease involving the gastrointestinal tract, is associated with persistent low-grade inflammation and altered secretion of pancreatic and gut hormones as well as cytokines. While GRP is involved in secretion of many of them, it is not known whether GRP has a role in AGM...
August 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28912818/a-successfully-treated-case-of-gastrointestinal-stromal-tumor-causing-severe-anemia-and-localized-peritonitis-showing-angina-pectoris-resulting-in-watershed-cerebral-infarction
#11
Yoshihide Sehara, Yuka Hayashi, Kenichi Ohya, Naoki Kaneko, Mikio Sawada
Ischemic stroke following acute myocardial infarction is a rare but a serious complication. Because the pathophysiology of stroke is dynamic, it is often hard to identify the cause of stroke. Here, we present the case of a 75-year-old man with ischemic stroke following angina pectoris caused by severe anemia and localized peritonitis due to gastrointestinal stromal tumor of small intestine. On admission, he showed consciousness disturbance, fever, and left hemiplegia. The electrocardiogram on admission showed ST-segment depression in V2 to V6 which was normalized 4 hours later...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28912637/prognostic-impact-of-extracapsular-lymph-node-invasion-and-myofibroblastic-activity-in-extrahepatic-bile-duct-cancer
#12
Tadashi Yoshizawa, Keinosuke Ishido, Kensuke Saito, Toshihiro Haga, Hiroko Seino, Yunyan Wu, Satoko Morohashi, Kenichi Hakamada, Hiroshi Kijima
Extrahepatic bile duct carcinoma is a potentially malignant gastrointestinal lesion. Cancer cells spread via the lymphatic system to regional lymph nodes and help in tumor progression. However, there are no reports on the prognostic impact of extracapsular lymph node invasion and myofibroblastic activity in this cancer. Hence, we classified the histopathologic patterns of lymph nodes into 2 patterns: extracapsular lymph node invasion or not. Based on this, we investigated 32 cases of extrahepatic bile duct cancer with lymph node metastasis and classified 21 cases as positive and 11 cases as negative...
2017: Clinical Medicine Insights. Pathology
https://www.readbyqxmd.com/read/28911826/immunoproteasome-selective-and-non-selective-inhibitors-a-promising-approach-for-the-treatment-of-multiple-myeloma
#13
REVIEW
Roberta Ettari, Maria Zappalà, Silvana Grasso, Caterina Musolino, Vanessa Innao, Alessandro Allegra
The ubiquitin-proteasome system (UPS) is the major non-lysosomal proteolytic system for the degradation of abnormal or damaged proteins no longer required. The proteasome is involved in degradation of numerous proteins which regulate the cell cycle, indicating a role in controlling cell proliferation and maintaining cell survival. Defects in the UPS can lead to anarchic cell proliferation and to tumor development. For these reasons UPS inhibition has become a significant new strategy for drug development in cancer treatment...
September 11, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28906349/intestinal-obstruction-due-to-kaposiform-hemangioendothelioma-in-a-1-month-old-infant-a-case-report
#14
Joong Kee Youn, Shin-Hoo Park, Ji-Won Han, Chaeyoun Oh, Hyun-Young Kim, Sung-Eun Jung
RATIONALE: Kaposiform hemangioendothelioma (KHE) is an aggressive vascular tumor, mainly occurring in infants and young children and previously reported cases were mainly cutaneous or visceral form. Intestinal kaposiform hemangioma was first reported in 2012. Intestinal type KHE showed better prognosis if the lesion was limited in the gastrointestinal tract and coagulopathy was not accompanied. Since the number of reported cases is small, further study for treatment options and prognosis need to be done...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28904693/-gastrointestinal-stromal-tumors-gist-status-and-news-through-our-experience-on-54-cases-and-review-of-literature
#15
Nezha Taoufiq, Asmaa Naim, Zineb Bouchbika, Nadia Benchekroune, Hassan Jouhadi, Souha Sahraoui, Abdelatif Benider
Tumors Gastrointestinal Stromal "GIST" are a very rare form of digestive tract cancers belonging to the family of sarcomas. The aim of this study is to establish the epidemiological profile, the diagnostic and therapeutic difficulties of this malignancy supported in a developing country. A retrospective study spread over 8 years from January 2002 to March 2010, was conducted at the Department of Radiotherapy and Oncology of Casablanca (Morocco) have collated 54 cases of Gastrointestinal Stromal tumors. The average age of our patients was 55 years...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28904174/in-hospital-outcomes-of-tumor-lysis-syndrome-a-population-based-study-using-the-national-inpatient-sample
#16
Urshila Durani, Nilay D Shah, Ronald S Go
The epidemiology and outcomes of tumor lysis syndrome (TLS) are understudied. We used the National Inpatient Sample (NIS), a nationally representative weighted sample of all U.S. hospital discharges, to study outcomes and predictors of mortality in hospitalized patients with TLS. The NIS was queried for patients with a discharge diagnosis of TLS (ICD-9 code 277.88) from 2010-2013. Baseline characteristics and outcomes were analyzed. A multivariable logistic regression analysis was performed to identify predictors of mortality...
September 13, 2017: Oncologist
https://www.readbyqxmd.com/read/28903381/tumor-location-impacts-immune-response-in-mouse-models-of-colon-cancer
#17
Xianda Zhao, Lihua Li, Timothy K Starr, Subbaya Subramanian
Existing preclinical models of human colorectal cancer (CRC) that rely on syngeneic subcutaneous grafts are problematic, because of increasing evidence that the immune microenvironment in subcutaneous tissue is significantly different from the gastrointestinal tract. Similarly, existing orthotopic models that use a laparotomy for establishing grafts are also problematic, because the surgical procedure results in extensive inflammation, thereby creating a nonphysiologic tumor microenvironment. To facilitate the bench-to-bedside translation of CRC immunotherapy strategies, we developed a novel orthotopic model in mice that uses endoscopy-guided microinjection of syngeneic cancer cells...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903160/safety-of-systemic-agents-for-the-treatment-of-pediatric-psoriasis
#18
Inge M G J Bronckers, Marieke M B Seyger, Dennis P West, Irene Lara-Corrales, Megha Tollefson, Wynnis L Tom, Marcia Hogeling, Leah Belazarian, Claus Zachariae, Emmanuel Mahé, Elaine Siegfried, Sandra Philipp, Zsuzsanna Szalai, Ruth Ann Vleugels, Kristen Holland, Ruth Murphy, Eulalia Baselga, Kelly Cordoro, Jo Lambert, Alex Alexopoulos, Ulrich Mrowietz, Wietske Kievit, Amy S Paller
Importance: Use of systemic therapies for moderate to severe psoriasis in children is increasing, but comparative data on their use and toxicities are limited. Objective: To assess patterns of use and relative risks of systemic agents for moderate to severe psoriasis in children. Design, Setting, and Participants: A retrospective review was conducted at 20 centers in North America and Europe, and included all consecutive children with moderate to severe psoriasis who used systemic medications or phototherapy for at least 3 months from December 1, 1990, to September 16, 2014...
September 13, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28902796/carcinosarcoma-of-the-pancreas-case-report-with-comprehensive-literature-review
#19
Dietrich A Ruess, Claudia Kayser, Jakob Neubauer, Stefan Fichtner-Feigl, Ulrich T Hopt, Uwe A Wittel
Carcinosarcomas are rare biphasic neoplasms with distinct malignant epithelial and mesenchymal components. Most commonly, carcinosarcomas arise in the uterus as malignant mixed müllerian tumors, but also infrequently appear in other organs such as the ovaries and breast, the prostate and urinary tract, the lungs, or in the gastrointestinal system, among others. Pancreatic carcinosarcomas are exceedingly rare; only a few cases are reported in the English literature. Their pathogenesis remains to be fully clarified...
October 2017: Pancreas
https://www.readbyqxmd.com/read/28901964/the-role-of-the-surgical-pathologist-in-the-diagnosis-of-gastrointestinal-polyposis-syndromes
#20
Christophe Rosty
Polyps of the gastrointestinal tract are very common lesions and most frequently sporadic in nature. Some polyp subtypes are associated with rare hereditary polyposis syndromes, including juvenile polyposis syndrome, Peutz-Jeghers syndrome, and Cowden syndrome. However, many sporadic benign lesions of the gastrointestinal tract can mimic some of these syndromic hamartomatous polyps. The role of the surgical pathologist is to raise the possibility of a hereditary condition in case of suggestive polyp histology and to look for clinical information to support the suspected diagnosis...
September 8, 2017: Advances in Anatomic Pathology
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