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Khaled Elsayad, Laith Samhouri, Sergiu Scobioala, Uwe Haverkamp, Hans Theodor Eich
PURPOSE/OBJECTIVE(S): Lung cancer tumor volume reduction is common during radiation treatment (RT). The purpose of this study was to investigate tumor volume reduction ratio (VRR) and its correlation with outcomes in a cohort of patients with stage III non-small cell lung cancer (NSCLC) who underwent image-guided radiochemotherapy (RCTx). MATERIALS/METHODS: Fifty patients with NSCLC treated with fractionated RT at our institution between 2013 and 2017 were included...
June 2018: Journal of Cancer Research and Clinical Oncology
Andreas Bartols, Bernt-Peter Robra, Winfried Walther
BACKGROUND: Reciproc instruments are the only contemporary root canal instruments where glide path preparation is no longer strictly demanded by the manufacturer. As the complete preparation of root canals is associated with success in endodontic treatment we wanted to assess the ability and find predictors for Reciproc instruments to reach full working length (RFWL) in root canals of maxillary molars in primary root canal treatment (1°RCTx) and retreatment (2°RCTx) cases. METHODS: This retrospective study evaluated 255 endodontic treatment cases of maxillary molars...
2017: PeerJ
A Donnelly, D Coffey, H F Duncan
AIM: To revaluate through re-audit the technical quality of undergraduate nonsurgical root canal treatment (RCTx) in a dental teaching hospital as a result of recommended changes to teaching practices. METHODOLOGY: The technical quality of undergraduate RCTx was evaluated radiographically after educational changes and the mandatory introduction of new technologies (nickel-titanium files, apex locators, greater taper gutta-percha points) in 182 root canals. Evaluation was based on four criteria: presence of voids, root canal filling termination (0-2 mm of radiographic apex), all roots filled and the prepared canal contained the original anatomy...
December 5, 2016: International Endodontic Journal
Annett Linge, Fabian Lohaus, Steffen Löck, Alexander Nowak, Volker Gudziol, Chiara Valentini, Cläre von Neubeck, Martin Jütz, Inge Tinhofer, Volker Budach, Ali Sak, Martin Stuschke, Panagiotis Balermpas, Claus Rödel, Anca-Ligia Grosu, Amir Abdollahi, Jürgen Debus, Ute Ganswindt, Claus Belka, Steffi Pigorsch, Stephanie E Combs, David Mönnich, Daniel Zips, Frank Buchholz, Daniela E Aust, Gustavo B Baretton, Howard D Thames, Anna Dubrovska, Jan Alsner, Jens Overgaard, Mechthild Krause, Michael Baumann
OBJECTIVE: To investigate the impact of the tumour volume, HPV status, cancer stem cell (CSC) marker expression and hypoxia gene signatures, as potential markers of radiobiological mechanisms of radioresistance, in a contemporary cohort of patients with locally advanced head and neck squamous cell carcinoma (HNSCC), who received primary radiochemotherapy (RCTx). MATERIALS AND METHODS: For 158 patients with locally advanced HNSCC of the oral cavity, oropharynx or hypopharynx who were treated at six DKTK partner sites, the impact of tumour volume, HPV DNA, p16 overexpression, p53 expression, CSC marker expression and hypoxia-associated gene signatures on outcome of primary RCTx was retrospectively analyzed...
December 2016: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
Philipp Günther Kup, Carsten Nieder, Guido Winnekendonk, Irenäus Anton Adamietz, Khashayar Fakhrian
Glioblastoma multiforme is the most common primary malignant brain tumor. The clinical outcome following diagnosis remains extremely poor. The treatment of choice is wide surgical resection of the visible tumor, frequently followed by adjuvant combined radiochemotherapy (RCTx) with temozolomide as the chemotherapeutic agent. Extracranial metastases are extremely rare, with <200 cases of extracranial metastases from glioblastoma multiforme reported in the literature to date. We herein present a case of a patient suffering from a fast-growing metastasis to the oral cavity, completely filling the buccal cavity within 2 weeks, as the only manifestation of recurrent glioblastoma multiforme following initial surgical resection and adjuvant RCTx...
October 2016: Molecular and Clinical Oncology
Sebastian Hinz, Christian Röder, Jürgen Tepel, Alexander Hendricks, Clemens Schafmayer, Thomas Becker, Holger Kalthoff
BACKGROUND: Several studies have shown, that circulating tumor cells (CTC) have a negative prognostic value in colorectal cancer patients. Aim of this study was to evaluate the role of CTC in specifically rectal cancer patients regarding the influence on overall survival and to elucidate the impact of CTC in predicting response after chemoradiation (RCTX). METHODS: In this prospective monocentric study 267 patients with rectal cancer were included. Patients with locally advanced tumors were treated with RCTX followed by surgery...
2015: BMC Cancer
Christhardt Köhler, Alexander Mustea, Simone Marnitz, Achim Schneider, Vito Chiantera, Uwe Ulrich, Jens-Peter Scharf, Peter Martus, Marcelo Andrade Vieira, Audrey Tsunoda
OBJECTIVE: The International Federation of Gynecology and Obstetrics (FIGO) staging for cervical cancer is based on clinical examination. Previous studies have demonstrated significant upstaging with surgical staging. However, no randomized trial has ever shown a survival benefit when radiation combined with chemoradiation (RCTX) is modified according to surgical staging. The objective of the study was to evaluate the feasibility and outcomes of surgical staging prior to radical RCTX treatment among patients with locally advanced cervical cancer in the setting of a larger, prospective, randomized study (the Uterus-11 study of the German Gynecologic Oncology Group)...
October 2015: American Journal of Obstetrics and Gynecology
Simone Marnitz, Eva Christine Abt, Peter Martus, Audrey Tsunoda, Christhardt Köhler
OBJECTIVE: Response evaluation after primary chemoradiation (RCTX) in patients with cervical cancer remains difficult. Routine hysterectomy after primary RCTX is associated with considerable surgical morbidity without impact on survival. The purpose of the present study was to evaluate value of routine curettage after RCTX to detect persistent tumor. METHODS: Between 2006 and 2012, patients (n = 217) with cervical cancer in International Federation of Gynecology and Obstetrics stages IB1 N1 (14%), IB2 (9%), IIA (5%), IIB (46%), IIIA (4%), IIIB (15%), IVA (6%), and IVB (1%), respectively, underwent primary RCTX...
July 2017: International Journal of Gynecological Cancer
Hanno M Specht, Norbert Ahrens, Christiane Blankenstein, Thomas Duell, Rainer Fietkau, Udo S Gaipl, Christine Günther, Sophie Gunther, Gregor Habl, Hubert Hautmann, Matthias Hautmann, Rudolf Maria Huber, Michael Molls, Robert Offner, Claus Rödel, Franz Rödel, Martin Schütz, Stephanie E Combs, Gabriele Multhoff
Heat shock protein 70 (Hsp70) is frequently overexpressed in tumor cells. An unusual cell surface localization could be demonstrated on a large variety of solid tumors including lung, colorectal, breast, squamous cell carcinomas of the head and neck, prostate and pancreatic carcinomas, glioblastomas, sarcomas and hematological malignancies, but not on corresponding normal tissues. A membrane (m)Hsp70-positive phenotype can be determined either directly on single cell suspensions of tumor biopsies by flow cytometry using cmHsp70...
2015: Frontiers in Immunology
K Ott, T Schmidt, F Lordick, K Herrmann
Perioperative or preoperative radiochemotherapy (RCTx) is nowadays standard for locally advanced esophageal cancer in Europe, as randomized studies have shown a significant survival benefit for patients with multimodal treatment. As responders and nonresponders have a significantly different prognosis, a response-based tailored preoperative treatment would be of utmost interest. An established method is a metabolic response evaluation by 18F-fluorodeoxyglucose positron emission tomography (FDG-PET). The level of metabolic response is known to be dependent on the localization, tumor entity and type of preoperative treatment...
June 2014: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
M Mangler, N Zech, A Schneider, C Köhler, S Marnitz
Introduction: In spite of the existence of guidelines and international recommendations, many aspects in the diagnosis, therapy and follow-up of patients with cervical cancer are not based on validated data. A broad spectrum of different opinions and procedures concerning the therapy for patients with cervical cancer is under controversial discussion by the responsible gynaecologists in German hospitals. Methods: The present study is intended to picture the current treatment situation for cervical cancer in Germany...
March 2013: Geburtshilfe und Frauenheilkunde
K Horisberger, S Rothenhoefer, M Kripp, R D Hofheinz, S Post, P Kienle
AIMS: While the influence on survival is only seen in patients with complete regression after neoadjuvant treatment in locally advanced rectal cancer the impairment of the continence capacity weighs even more for patients with little oncological benefit. METHODS: Patients treated with intensified preoperative radiochemotherapy patients treated only by TME surgery were asked five years after treatment to complete the Wexner and SF-12 quality of life questionnaire...
February 2014: European Journal of Surgical Oncology
Simone Marnitz, Christhardt Köhler, Renato Jose Affonso, Achim Schneider, Vito Chiantera, Audrey Tsounoda, Filiberto Vercellino
PURPOSE: To determine the rate of unavoidable adjuvant chemoradiation (RCTX) due to histologic results after radical surgery in patients with early cervical cancer. PATIENTS AND METHODS: Between May 2004 and July 2011, 448 consecutive patients diagnosed with invasive cervical cancer stage IA1 L1 to IIA underwent laparoscopic staging at the Department of Gynecology and Gynecologic Oncology at Charité Berlin. Only in patients without lymph node metastases (n = 394) on frozen section, radical operation was continued either by laparoscopic radical hysterectomy (n = 228) or by radical vaginal trachelectomy (n = 166)...
2012: Oncology
Bingmiao Gao, Dongting Zhangsun, Yong Wu, Bo Lin, Xiaopeng Zhu, Sulan Luo
Conotoxins are a diverse array of small peptides mostly with multiple disulfide bridges. These peptides become an increasing significant source of neuro-pharmacological probes and drugs as a result of the high selectivity for ion channels and receptors. Conotoxin GeXIVAWT (CTX-GeXIVAWT) is a 28-amino acid peptide containing five cysteines isolated from the venom of Conus generalis. Here, we present a simple and fast strategy of producing disulfide-rich conotoxins via recombinant expression. The codes of novel conotoxin gene GeXIVAWT were optimized and generated two pairs of primers by chemical synthesis for construction of expression vector...
February 2013: Applied Microbiology and Biotechnology
Andreas Arnold, Panagiotis Ziglinas, Katharina Ochs, Nadine Alter, Andreas Geretschläger, Kurt Lädrach, Peter Zbären, Marco Caversaccio
OBJECTIVES: Nasal and paranasal sinus malignancies are rare. The most common lesions are located in the nasal cavity and the maxillary sinus, although they also occur in the ethmoid, sphenoid and frontal sinuses. Treatment often combines surgery, radiotherapy and chemotherapy. Endoscopic surgical approaches are increasingly used in order to reduce the morbidity associated with standard open resection. The aim of our study was to analyse the long-term treatment results of sinonasal malignancies (SNM), with a special focus on surgical approaches...
October 2012: Oral Oncology
K Ott, L Sisic, M Büchler
The prognosis of locally advanced squamous cell carcinomas (SCC) of the esophagus after surgery only is poor. Therefore a definitive chemoradiotherapy (RCTx) was also discussed as the therapy of choice. Besides tumor biology, patient-related factors, such as alcohol and nicotine abuse increase the perioperative mortality and morbidity. Multimodal treatment can improve the outcome in comparison to surgery alone. A recently published meta-analysis confirmed that preoperative RCTx followed by surgery improves the prognosis compared to surgery alone in SCC of the esophagus...
November 2011: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
Christian Simon, Cem Bulut, Philippe A Federspil, Marc W Münter, Katja Lindel, Zazie Bergmann, Serkan Sertel, Sarah Leitzbach, Peter K Plinkert
BACKGROUND: Surgery after (chemo)radiation (RCTX/RTX) is felt to be plagued with a high incidence of wound healing complications reported to be as high as 70%. The additional use of vascularized flaps may help to decrease this high rate of complications. Therefore, we examined within a retrospective single-institutional study the peri--and postoperative complications in patients who underwent surgery for salvage, palliation or functional rehabilitation after (chemo)radiation with regional and free flaps...
2011: Radiation Oncology
Khaled Balto
DATA SOURCES: Medline, the Cochrane Library, hand searches of the International Endodontic Journal, Journal of Endodontics, Oral Surgery Oral Medicine Oral Pathology Oral Radiology and Endodontics, Dental Traumatology (& Endodontics) and bibliographies of all relevant articles and review articles. Unpublished studies were identified by searching abstracts and conference proceedings. Personal contacts were used to identify ongoing or unpublished studies. Two reviewers independently assessed and selected the studies with disagreements being resolved by discussion...
2011: Evidence-based Dentistry
Y-L Ng, V Mann, K Gulabivala
AIM: To investigate the probability of and factors influencing tooth survival following primary (1°RCTx) or secondary (2°RCTx) root canal treatment. METHODOLOGY: This prospective study involved annual follow-up of 2 (100%) to 4 years (50%) of 1°RCTx (759 teeth, 572 patients) and 2°RCTx (858 teeth, 642 patients) carried out by Endodontic postgraduate students. Pre-, intra- and post-operative data were collected prospectively from consented patients. Information about extraction of the root filled tooth was sought from the patient, the referring dentist or derived from the patient's records and included the timing and reasons for extraction...
July 2011: International Endodontic Journal
Y-L Ng, V Mann, K Gulabivala
AIM: To investigate the probability of and factors influencing periapical status of teeth following primary (1°RCTx) or secondary (2°RCTx) root canal treatment. METHODOLOGY: This prospective study involved annual clinical and radiographic follow-up of 1°RCTx (1170 roots, 702 teeth and 534 patients) or 2°RCTx (1314 roots, 750 teeth and 559 patients) carried out by Endodontic postgraduate students for 2-4 (50%) years. Pre-, intra- and postoperative data were collected prospectively on customized forms...
July 2011: International Endodontic Journal
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