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https://www.readbyqxmd.com/read/29139089/cancer-stem-cells-in-head-and-neck-carcinomas-identification-and-possible-therapeutic-implications
#1
Elize Wolmarans, Sonja C Boy, Sulette Nel, Anne E Mercier, Michael Sean Pepper
The recurrence and/or lack of response of certain tumors to radio- and chemotherapy has been attributed to a small subpopulation of cells termed cancer stem cells (CSCs). CSCs have been identified in many tumors (including solid and hematological tumors). CSCs are characterized by their capacity for self-renewal, their ability to introduce heterogeneity within a tumor mass and its metastases, genomic instability, and their insensitivity to both radiation and chemotherapy. The latter highlights the clinical importance of studying this subpopulation since their resistance to traditional treatments may lead to metastatic disease and/or tumor relapse...
November 15, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29130149/is-lipidomic-the-answer-to-the-search-of-a-biomarker-for-organ-preservation-protocol-in-head-and-neck-squamous-cell-carcinoma
#2
Ana Carolina Laus, Ismael Dale Cotrim Guerreiro da Silva, Fernanda Bertuccez Cordeiro, Edson Guimarães Lo Turco, Luciano de Souza Viana, André Lopes Carvalho
In the last decade organ preservation protocols based on chemoradiotherapy (CRT) has been showing the possibility of preserving function without jeopardizing survival for locally advanced head and neck squamous cell carcinoma (HNSCC). Still, only a percentage of the patients will benefit from this approach and, to date, no biomarkers are known to correctly predict these patients. More recently, modern mass spectrometry method has been used to determine metabolic profiles, and lipidomics, in particular, emerged as a new field of study in oncology and other diseases...
November 13, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/29111164/pretreatment-of-food-waste-for-methane-and-hydrogen-recovery-a-review
#3
REVIEW
Obulisamy Parthiba Karthikeyan, Eric Trably, Sanjeet Mehariya, Nicolas Bernet, Jonathan W C Wong, Hélène Carrere
Food waste (FW) management by biological process is more attractive and eco-friendly approach than thermo-chemical conversion or landfilling. However, FW composition and physico-chemical and biological characteristics affect the overall biological process in terms of product yield and degradation rate. To overcome this major bottle-neck, the pretreatment of FW is proposed. Therefore this review aims to provide a comprehensive summary of the importance of pretreatment of FW with respect to FW management by anaerobic digestion (AD) and dark fermentation (DF)...
September 20, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29107950/a-new-method-to-determine-cortical-bone-thickness-in-ct-images-using-a-hybrid-approach-of-parametric-profile-representation-and-local-adaptive-thresholds-accuracy-results
#4
Oleg Museyko, Bastian Gerner, Klaus Engelke
MOTIVATION: Cortical bone is an important contributor to bone strength and is pivotal to understand the etiology of osteoporotic fractures and the specific mechanisms of antiosteoporotic treatment regimen. 3D computed tomography (CT) can be used to measure cortical thickness, density, and mass in the proximal femur, lumbar vertebrae, and distal forearm. However, the spatial resolution of clinical whole body CT scanners is limited by radiation exposure; partial volume artefacts severely impair the accurate assessment of cortical parameters, in particular in locations where the cortex is thin such as in the lumbar vertebral bodies or in the femoral neck...
2017: PloS One
https://www.readbyqxmd.com/read/29063447/stage-iv-gastric-cancer-successfully-treated-by-multidisciplinary-therapy-including-chemotherapy-immunotherapy-and-surgery-a-case-report
#5
Makoto Kawamoto, Hideya Onishi, Norihiro Koya, Hiroyuki Konomi, Kenji Mitsugi, Risa Tanaka, Junichi Motoshita, Takashi Morisaki, Masafumi Nakamura
BACKGROUND: The prognosis of stage IV gastric cancer (GC) still remains unfavorable. Multidisciplinary approaches should therefore be considered to improve the survival of patients with stage IV GC. We report here a case of primary GC with potentially unresectable metastasis, successfully treated by a multidisciplinary approach including chemotherapy, immunotherapy, and surgery. CASE PRESENTATION: A 74-year-old man presented with multiple left neck masses. Abdominal computed tomography showed a thickened gastric wall and multiple lymphadenopathies including left supraclavicular lymph node...
October 23, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/29058491/a-review-of-primary-thyroid-lymphoma-molecular-factors-diagnosis-and-management
#6
Efstathios T Pavlidis, Theodoros E Pavlidis
Purpose/aim: To focus on current aspects of primary thyroid lymphoma (PTL), which is a rare clinical entity usually manifested by a rapidly growing mass in the neck that can cause pressure symptoms. MATERIALS AND METHODS: Relevant papers in PubMed published through June 2017 were selected to track updated information about PTL with an emphasis on diagnosis and novel therapeutic management. RESULTS: The most frequent cases include non-Hodgkin lymphoma derived from B-cells, mainly diffuse large B-cell lymphoma (DLBCL) followed by mucosa-associated lymphoid tissue (MALT) lymphoma or a mixed type...
October 23, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/29043207/mantle-cell-lymphoma-involvement-of-nodal-and-extranodal-sites-in-the-head-and-neck-with-multifocal-oral-lesions
#7
Marcelo Marcucci, Gilberto Marcucci, Mirna Scalon Cordeiro, Jorge Esquiche León, Juliane Piragine Araujo, Jefferson Xavier de Oliveira, Karina Cecília Panelli Santos
Mantle cell lymphoma (MCL) is a malignant B-cell neoplasm, which comprises monomorphic and small- to medium-sized mantle zone-derived lymphoid cells. It is characterized by chromosomal translocation t(11;14)(q13;q32) and CCND1 truncation, resulting in cell cycle deregulation. It is an aggressive type of non-Hodgkin lymphoma with a propensity to present with extranodal involvement. This study shows the case of an 80-year-old Caucasian male who complained of a 2-month progressive swelling on the right side of his face...
July 2017: Autopsy & case reports
https://www.readbyqxmd.com/read/29031172/a-parapharyngeal-space-schwannoma-arising-from-the-vagus-nerve-a-case-report
#8
Conor Carroll, Manish Jagatiya, Dia Kamel, Jamal Siddiqi
INTRODUCTION: Tumours of the parapharyngeal space are rare. Only 0.5% of head and neck tumours occur in this space. Surgical excision of parapharyngeal space lesions is challenging because of the anatomical complexity of the area. PRESENTATION OF CASE: A 31-year-old male patient was referred by his general dental practitioner for removal of lower wisdom teeth due to multiple episodes of pericoronitis. At the initial examination, an incidental finding was made of a large fluctuant posterior oropharyngeal swelling...
October 5, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29027675/ultrasound-guided-percutaneous-dilatational-tracheostomies-in-2-difficult-airways
#9
José A Valencia, David J Romero, Enrique Arango, Javier E Cubillos, Hugo A Mantilla, Luis G García-Herreros
Ultrasound has become a rapid, safe, and easy-to-use tool for anesthesiologists. It reduces complications, morbidity, and mortality, especially in patients with anatomic abnormalities in whom a traditional approach may be both difficult and risky. We report 2 cases of symptomatic patients with a difficult airway due to displacement of the trachea by a neck mass. Real-time ultrasound imaging was performed for percutaneous dilatational tracheostomies, identifying important structures, without any complications...
October 13, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29019343/the-association-between-dietary-inflammatory-properties-and-bone-mineral-density-and-risk-of-fracture-in-us-adults
#10
M Mazidi, N Shivappa, M D Wirth, J R Hebert, H Vatanparast, A P Kengne
BACKGROUND/OBJECTIVES: To examine the associations of dietary inflammatory index (DII) with bone mineral density (BMD) and fracture risk in adult Americans.Subjects/Method:The United States National Health and Nutrition Examination Survey participants during 2005-2010 were included if they had measured data on dietary intake and BMD. DII scores were calculated from estimated micro- and macronutrients from a single 24-h dietary recall. BMD was measured using dual-energy X-ray absorptiometry densitometers...
November 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28988020/management-of-mediastinal-parathyroid-adenoma-via-minimally-invasive-thoracoscopic-surgery-case-report
#11
Saulat Hasnain Fatimi, Hina Inam, Farida Karim Chagan, Usama Khalid Choudry
INTRODUCTION: The most common cause of chronic hypercalcemia is primary hyperparathyroidism (PHPT). However, owing to the diverse presentation of hypercalcemia, the diagnosis often goes unnoticed culminating as a continuum of recurrence of symptoms. Nephrolithiasis, decreased bone mineral density and peptic ulcer disease are the main clinical sequelae. Among the causes of PHPT 80% are caused by parathyroid adenomas (PA). However, only rarely, these adenomas are found ectopically. PRESENTATION OF CASE: We present the case of a 66-year-old female with a history of recurrent renal stones and peptic ulcer disease...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28987714/diagnosis-and-management-of-pyriform-sinus-cyst-in-neonates-16-year-experience-at-a-single-center
#12
Haitao Zhu, Xianmin Xiao, Shan Zheng, Chun Shen
BACKGROUND/PURPOSE: The purpose of this study was to review our experience in diagnosing and managing neonatal pyriform sinus cyst (PSC) and to assess its outcomes. METHODS: We retrospectively reviewed 38 cases of neonatal PSC from 2001 to 2016. Clinical features, PSC diagnosis, treatment, and outcomes were analyzed. RESULTS: Cervical masses were detected prenatally in 8 patients (21.1%). Neck cyst and respiratory distress were frequent symptoms among these patients...
September 2, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28929066/surgical-treatment-of-retrosternal-goitre
#13
Kiera Welman, Richard Heyes, Paras Dalal, Sarah Hough, Marciano Bunalade, Vladimir Anikin
This study aims to evaluate surgical approaches to the management of retrosternal goitre. Between 2004 and 2014, 35 patients (eight males; mean age 67.4 ± 10.9 years) with retrosternal goitre (mainly right-sided in 9, left-sided in 14 and bilateral in 12) underwent surgery. A palpable neck mass was found in 11 (31.4%), stridor in 10 (28.6%) and thyrotoxicosis in 4 (11.4%) cases. 4 (11.4%) patients were asymptomatic. Tracheal compression was detected radiologically in 27 (77.2%) patients with deviation in 18 (51...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28927073/surgical-treatment-of-parapharyngeal-space-tumors-a-report-of-29-cases
#14
Kei Ijichi, Shingo Murakami
The present study aimed to establish a strategy for parapharyngeal space (PPS) tumor surgery based on preoperative symptoms, clinical signs, imaging and histological examination. A retrospective cohort study was conducted with 29 adult patients who underwent surgery for primary PPS tumors from 2008-2015. The following data was obtained: Preoperative symptoms of the patient, histological type of the tumor, surgical approach and complications. Of the 29 patients who underwent surgery to remove a PPS tumor, 16 presented with neurogenic tumors and 13 with salivary gland tumors...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28922241/a-shift-in-the-orbit-immediate-endoscopic-reconstruction-after-transnasal-orbital-tumors-resection
#15
Giacomo Colletti, Alberto M Saibene, Federico Pessina, Marco Duvina, Fabiana Allevi, Giovanni Felisati, Federico Biglioli
Endoscopic endonasal resection of orbital lesions is a safe and common approach. Nevertheless, medial orbital wall defects following the procedure are not routinely addressed, potentially leading to diplopia and enophthalmos. In this article, the authors propose a new technique for purely endoscopic endonasal reconstruction of orbital wall defects following endoscopic endonasal resection of orbital lesions.The patient, a 43-year-old male, suffering from right exophthalmos and diplopia due to a venous malformation of the right orbit underwent endoscopic endonasal resection of the mass...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28888713/simple-and-rapid-lc-ms-ms-method-for-the-absolute-determination-of-cetuximab-in-human-serum-using-an-immobilized-trypsin
#16
Kaito Shibata, Takafumi Naito, Jun Okamura, Seiji Hosokawa, Hiroyuki Mineta, Junichi Kawakami
Proteomic approaches using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) without an immunopurification technique have not been applied to the determination of serum cetuximab. This study developed a simple and rapid LC-MS/MS method for the absolute determination of cetuximab in human serum and applied it to clinical settings. Surrogate peptides derived from cetuximab digests were selected using a Fourier transform mass spectrometer. Reduced-alkylated serum cetuximab without immunopurification was digested for 20minutes using immobilized trypsin, and the digestion products were purified by solid-phase extraction...
August 30, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28882637/successful-retrograde-intubation-after-failed-fiberoptic-intubation-and-percutaneous-cricothyrotomy
#17
Stephanie Brenman, Sachin Gupta, Stephanie Tseeng
BACKGROUND: An obstructive neck lesion presents an airway challenge for any emergency physician. Retrograde intubation is an infrequently used airway alternative that can be employed in the difficult airway algorithm that requires little training and is less invasive than surgical cricothyrotomy. CASE REPORT: We report a case of a 31-year-old male patient who presented with respiratory distress progressing to respiratory failure from upper airway obstruction. The patient had significant tracheal thickening at the level of the thyroid gland based on a computed tomography report from 3 weeks prior to his presentation...
October 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28875141/intramuscular-hemangioma-in-buccal-cheek-a-case-report
#18
Jae Woo Park, Chul-Hwan Kim, Chan Woong Moon
Hemangioma is the most common benign tumor of a vascular origin, and is characterized by the abnormal proliferation of blood vessels. Intramuscular hemangioma (IMH) usually involves the skeletal muscles of the trunk or limbs, but rarely occurs in the head and neck region. This case report presents a patient with IMH showing multiple phleboliths in the buccal cheek. A 13-year-old boy was referred for the evaluation and management of painful swelling of the left cheek that had gradually increased in size over a 6 year duration...
August 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28864705/a-protocol-for-a-randomised-controlled-trial-of-the-bone-response-to-impact-loading-or-resistance-training-in-young-women-with-lower-than-average-bone-mass-the-optima-ex-trial
#19
Conor Lambert, Belinda R Beck, Amy T Harding, Steven L Watson, Benjamin K Weeks
INTRODUCTION: The aim of the Osteoporosis Prevention Through Impact and Muscle-loading Approaches to Exercise trial is to compare the bone response to two known osteogenic stimuli - impact loading exercise and resistance training. Specifically, we will examine the effect of a 10-month, twice-weekly, high-intensity impact loading exercise intervention and a 10-month, twice-weekly, high-intensity resistance training intervention on bone mass and strength at clinically important skeletal sites...
September 1, 2017: BMJ Open
https://www.readbyqxmd.com/read/28846747/distinctive-behaviour-of-live-biopsy-derived-carcinoma-cells-unveiled-using-coherence-controlled-holographic-microscopy
#20
Břetislav Gál, Miroslav Veselý, Jana Čolláková, Marta Nekulová, Veronika Jůzová, Radim Chmelík, Pavel Veselý
Head and neck squamous cell carcinoma is one of the most aggressive tumours and is typically diagnosed too late. Late diagnosis requires an urgent decision on an effective therapy. An individualized test of chemosensitivity should quickly indicate the suitability of chemotherapy and radiotherapy. No ex vivo chemosensitivity assessment developed thus far has become a part of general clinical practice. Therefore, we attempted to explore the new technique of coherence-controlled holographic microscopy to investigate the motility and growth of live cells from a head and neck squamous cell carcinoma biopsy...
2017: PloS One
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