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https://www.readbyqxmd.com/read/28339306/descriptive-characteristics-of-colon-and-rectal-cancer-recurrence-in-a-danish-population-based-study
#1
Ashley C Holmes, Anders H Riis, Rune Erichsen, Veronika Fedirko, Eva Bjerre Ostenfeld, Mogens Vyberg, Ole Thorlacius-Ussing, Timothy L Lash
BACKGROUND: Recurrence is a common outcome among patients that have undergone an intended curative resection for colorectal cancer. However, data on factors that influence colorectal cancer recurrence are sparse. We report descriptive characteristics of both colon and rectal cancer recurrence in an unselected population. MATERIAL AND METHODS: We identified 21,152 patients with colorectal cancer diagnosed between May 2001 and December 2011 and registered with the Danish Colorectal Cancer Group...
March 24, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28339109/validation-of-dynamic-treatment-couch-tracking-for-prostate-sbrt
#2
Stefanie Ehrbar, Simon Schmid, Alexander Jöhl, Stephan Klöck, Matthias Guckenberger, Oliver Riesterer, Stephanie Tanadini-Lang
PURPOSE: In stereotactic body radiation therapy (SBRT) of prostatic cancer, a high dose per fraction is applied to the target with steep dose gradients. Intrafractional prostate motion can occur unpredictably during the treatment and lead to target miss. This work investigated the dosimetric benefit of motion compensation with dynamic treatment-couch tracking for prostate SBRT treatments in the presence of prostatic motion. METHODS: Ten SBRT treatment plans for prostate cancer patients with integrated boosts to their index lesion were prepared...
March 24, 2017: Medical Physics
https://www.readbyqxmd.com/read/28338306/implantation-of-a-biodegradable-rectum-balloon-implant-tips-tricks-and-pitfalls
#3
Ben G L Vanneste, Kees van De Beek, Ludy Lutgens, Philippe Lambin
INTRODUCTION: A rectum balloon implant (RBI) is a new device to spare rectal structures during prostate cancer radiotherapy. The theoretical advantages of a RBI are to reduce the high radiation dose to the anterior rectum wall, the possibility of a post-implant correction, and their predetermined shape with consequent predictable position. OBJECTIVE: To describe, step-by-step, our mini-invasive technique for hands-free transperineal implantation of a RBI before start of radiotherapy treatment...
March 24, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28327275/a-population-based-study-of-outcomes-in-patients-with-gastrointestinal-neuroendocrine-tumours
#4
Todd McMullen, Akram Al-Jahdali, Christopher de Gara, Sunita Ghosh, Alexander McEwan, Daniel Schiller
BACKGROUND: Neuroendocrine tumours (NETs) are heterogeneous, with varying presentations and treatment options. To our knowledge, there are no randomized and few long-term studies of patient outcomes. The role of surgical and medical therapy for local, regional and metastatic disease continues to be evaluated in the literature. METHODS: We conducted a population-based search of the provincial cancer registry to identify patients with gastrointestinal NETs from the stomach, small intestine, colon and rectum diagnosed between 1990 and 2005 and assessed their outcomes...
April 1, 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/28325472/dosimetric-comparison-between-treatment-plans-of-patients-treated-with-low-dose-rate-vs-high-dose-rate-interstitial-prostate-brachytherapy-as-monotherapy-initial-findings-of-a-randomized-clinical-trial
#5
T Major, C Polgár, K Jorgo, G Stelczer, P Ágoston
PURPOSE: The aim of this study was to compare the dosimetry of intraoperative dose plans of prostate cancer patients treated with low-dose-rate (LDR) and high-dose-rate (HDR) interstitial brachytherapy (BT). METHODS AND MATERIALS: A randomized clinical trial was initiated at our institution to compare the results and side effects of LDR and HDR BT as monotherapy in the treatment of early, organ-confined prostate cancer patients. Eighty-seven patients were randomly assigned to receive HDR afterloading BT with one fraction of 19 Gy or permanent LDR (125)I seed BT with 145 Gy...
March 15, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28325052/-colorectal-cancer-the-importance-of-primary-tumor-location
#6
M Ryska, J Bauer
Retrospective evaluations of the relevance of primary colorectal cancer (CRC) location consistently indicate that right-sided tumors, arising in the cecum, ascending colon, hepatic bend, transverse colon and splenic flexure, are clinically, biologically and genetically different from left-sided tumors - those located in the descending colon, sigmoid colon or rectum. Location in the right-sided colon represents a negative prognostic indicator, particularly for stage III and IV carcinomas. Irrespective of treatment, the rightward location is associated with a significantly increased risk of death when compared to the left side...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28324283/prognostic-value-of-computed-tomography-measured-parameters-of-body-composition-in-primary-operable-gastrointestinal-cancers
#7
Douglas Black, Craig Mackay, George Ramsay, Zaid Hamoodi, Shayanthan Nanthakumaran, Kenneth G M Park, Malcolm A Loudon, Colin H Richards
BACKGROUND: Previous reports suggest that body composition parameters can be used to predict outcomes for patients with gastrointestinal (GI) cancers. However, evidence for an association with long-term survival is conflicting, with much of the data derived from patients with advanced disease. This study examined the effect of body composition on survival in primary operable GI cancer. METHODS: Patients with resectable adenocarcinoma of the GI tract (esophagus, stomach, colon, rectum) between 2006 and 2014 were identified from a prospective database...
March 21, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28321171/presacral-venous-bleeding-during-mobilization-in-rectal-cancer
#8
Jose Enrique Casal Núñez, Vincenzo Vigorita, Alejandro Ruano Poblador, Ana María Gay Fernández, Maria Ángeles Toscano Novella, Nieves Cáceres Alvarado, Lucinda Pérez Dominguez
AIM: To analyze the anatomy of sacral venous plexus flow, the causes of injuries and the methods for controlling presacral hemorrhage during surgery for rectal cancer. METHODS: A review of the databases MEDLINE(®) and Embase™ was conducted, and relevant scientific articles published between January 1960 and June 2016 were examined. The anatomy of the sacrum and its venous plexus, as well as the factors that influence bleeding, the causes of this complication, and its surgical management were defined...
March 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28316851/pure-primary-ovarian-squamous-cell-carcinoma-perforating-the-rectum
#9
Kazuya Mimura, Aiko Okada, Naotsugu Haraguchi, Kenjiro Sawada, Takuji Tomimatsu, Tadashi Kimura
Rectal perforation is uncommon in ovarian cancer, even in advanced stages. Pure primary ovarian squamous cell carcinoma is a very rare subtype of ovarian cancer and has not been reported to cause rectal perforation. A 50-year-old woman presented with rectal bleeding. Rectosigmoidoscopy suggested perforation of a pelvic tumor into the rectum. Abdominopelvic magnetic resonance imaging revealed a 9 cm heterogeneous mass in the pouch of Douglas. We performed complete cytoreduction, including an en-bloc resection of the tumor and rectosigmoid colon...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28303455/duodenal-cancer-in-a-young-patient-with-peuts-jeghers-syndrome-harboring-an-entire-deletion-of-the-stk11-gene
#10
Satoshi Teramae, Koichi Okamoto, Kumiko Tanaka, Reika Matsumoto, Shinji Kitamura, Tetsuo Kimura, Masahiro Sogabe, Hiroshi Miyamoto, Naoki Muguruma, Yoshimi Bando, Mitsuo Shimada, Tetsuji Takayama
A 21-year-old woman with Peuts-Jeghers syndrome (PJS) was referred to our hospital for gastrointestinal surveillance. She had been diagnosed as having PJS from a young age based on her family history and the presence of mucocutaneous pigmentation on her lips and oral mucosa. Her mother and brother had PJS harboring an entire deletion of the STK11 gene. She had tetralogy of Fallot, atrial tachycardia, sick sinus syndrome, and mental retardation in her past history. Esophagogastroduodenoscopy identified a protruded lesion with a depressed area that occupied the lumen half-circumferentially in the duodenal second portion and also showed a 10-mm protruded lesion on the anterior wall of the lower gastric body...
March 16, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28302932/successful-resection-of-a-large-rectal-adenoma-using-the-transsacral-approach
#11
Takuya Horio, Yosuke Oka, Ichitaro Shiratsuchi, Kouhei Saisho, Yuutarou Mihara, Reiichirou Kondo, Tetsushi Kinugusa, Jun Akiba, Yoshito Akagi
The transsacral approach is not routinely used for treating rectal tumors. We report the case of a 65-year-old man with a large adenoma at the posterior wall of the mid-rectum who was treated via the transsacral approach. The same lesion had been treated using transsacral endoscopic microsurgery 8 years previously. Moreover, 11 years previously he had undergone a laparotomy for bladder cancer, and an Indiana pouch had been constructed. Abdominal computed tomography showed that the pouch was adjacent to the rectum...
March 15, 2017: Kurume Medical Journal
https://www.readbyqxmd.com/read/28301974/folfox-and-intensified-split-course-chemoradiation-as-initial-treatment-for-rectal-cancer-with-synchronous-metastases
#12
T Bird, M Michael, M Bressel, J Chu, S Chander, P Cooray, J McKendrick, M Jefford, A Heriot, M Steel, T Leong, S Ngan
BACKGROUND: Optimal initial management of rectal carcinoma with synchronous metastases (RCSM) is controversial - both for patients being treated with curative and palliative intent. This study aims to evaluate the use of an upfront treatment strategy combining FOLFOX chemotherapy with split-course pelvic chemoradiation (FOLFOX + CRT) for patients with RCSM. MATERIAL AND METHODS: An analysis of all patients who commenced treatment with FOLFOX + CRT at our institutions between January 2009 and June 2014 was performed...
March 16, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28299284/integral-dose-based-inverse-optimization-may-reduce-side-effects-in-radiotherapy-of-prostate-carcinoma
#13
Ivaylo B Mihaylov
PURPOSE: The purpose of this work is to apply a novel inverse optimization approach, based on utilization of quantitative imaging information in the optimization function, to prostate carcinoma. MATERIALS AND METHODS: This new inverse optimization algorithm relies upon quantitative information derived from computed tomography (CT) imaging studies. The Hounsfield numbers of the CT voxels are converted to physical density, which in turn is used to calculate voxel mass and the corresponding integral dose, by summation over the product of dose and mass in each dose voxel...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28298476/a-meta-analysis-between-dietary-carbohydrate-intake-and-colorectal-cancer-risk-evidence-from-17-observational-studies
#14
Jian Huang, Guoqing Pan, Hongchao Jiang, Wenliang Li, Jian Dong, Hongbin Zhang, Xiang Ji, Zhu Zhu
   The association between dietary carbohydrate intake and colorectal cancer risk remains controversial. We therefore conducted this meta-analysis to assess the relationship between them. A literature search from the databases of Pubmed, Embase, Web of science and Medline databases were performed for available articles published in English (up to Sep 2016). Pooled relative risk (RR) with 95% confidence interval (CI) was calculated to evaluate the association between dietary carbohydrate intake and colorectal cancer risk...
March 15, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28297436/simultaneously-integrated-boost-sib-spares-oar-and-reduces-treatment-time-in-locally-advanced-cervical-cancer
#15
Christine H Feng, Yasmin Hasan, Malgorzata Kopec, Hania A Al-Hallaq
We performed a dosimetric comparison of sequential IMRT (sIMRT) and simultaneously integrated boost (SIB) IMRT to boost PET-avid lymph nodes while concurrently treating pelvic targets to determine the potential of SIB IMRT to reduce overall treatment duration in locally advanced cervical cancer. Ten patients receiving definitive radiation therapy were identified retrospectively. RTOG consensus guidelines were followed to delineate the clinical target volume and organs at risk (OAR), which were then expanded per IMRT consortium guidelines to yield the planning target volume (PTV)...
September 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297339/deformable-image-registration-and-interobserver-variation-in-contour-propagation-for-radiation-therapy-planning
#16
Adam C Riegel, Jeffrey G Antone, Honglai Zhang, Prachi Jain, Jagdeep Raince, Anthony Rea, Angelo M Bergamo, Ajay Kapur, Louis Potters
Deformable image registration (DIR) and interobserver variation inevitably introduce uncertainty into the treatment planning process. The purpose of the current work was to measure deformable image registration (DIR) errors and interobserver variability for regions of interest (ROIs) in the head and neck and pelvic regions. Measured uncertainties were combined to examine planning margin adequacy for contours propagated for adaptive therapy and to assess the trade-off of DIR and interobserver uncertainty in atlas-based automatic segmentation...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297330/using-daily-diagnostic-quality-images-to-validate-planning-margins-for-prostate-interfractional-variations
#17
Wen Li, Andrew Vassil, Andrew Godley, Lama Muhieddine Mossolly, Qingyang Shang, Ping Xia
The purpose of this study is to use the same diagnostic-quality verification and planning CTs to validate planning margin account for residual interfractional variations with image-guided soft tissue alignment of the prostate. For nine prostate cancer patients treated with IMRT to 78 Gy in 39 fractions, daily verification CT-on-rails images of the first seven and last seven fractions (n=126) were retrospectively selected for this study. On these images, prostate, bladder, and rectum were delineated by the same attending physician...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297313/a-comparison-of-organs-at-risk-doses-in-gyn-intracavitary-brachytherapy-for-different-tandem-lengths-and-bladder-volumes
#18
Zahra Siavashpour, Mahmoud Reza Aghamiri, Ramin Jaberi, Naser ZareAkha, Hamid Reza Dehghan Manshadi, Christian Kirisits, Mahbod Sedaghat
The purpose of this study was to investigate the concurrent effects of tandem length and bladder volume on dose to pelvic organs at risk (OARs) in HDR intracavitary brachytherapy treatment of cervical cancer. Twenty patients with locally advanced cervical cancer were selected for brachytherapy using Rotterdam applicators. The patients were CT scanned twice with empty and full bladder. Two treatment plans were prepared on each of the image sets. Patients were categorized into two groups; those treated with a tandem length of 4 cm or smaller (T≤4 cm) and those with tandem length larger than 4 cm (T>4 cm)...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28297284/dosimetric-comparison-of-intensity-modulated-radiotherapy-and-volumetric-modulated-arc-radiotherapy-in-patients-with-prostate-cancer-a-meta-analysis
#19
Wenting Ren, Chao Sun, Ningning Lu, Yingjie Xu, Fei Han, Yue Ping Liu, Jianrong Dai
Intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT) are two main radiotherapy techniques. The aim of this study is to explore which is the preferred technique in prostate treatment through the related publications and meta-analysis. Two authors independently identified all relevant articles available regarding eligibility criteria on PubMed, Embase, and Cochrane Library databases until December 2015. Publication bias was evaluated with funnel plot, and statistical analyses were performed with Stata software...
November 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28295627/second-local-recurrence-with-advanced-rectal-cancer-after-salvage-emr-of-local-recurrence-following-initial-cold-polypectomy
#20
Motohiko Kato, Junichi Shiraishi, Toshio Uraoka
A 60-year-old woman underwent colonoscopy for a positive fecal immunochemical test. A 5 mm sessile polyp (Paris type 0-Isp) was found in the lower rectum (Figure 1a). This polyp was diagnosed as a low-grade adenoma based on findings of magnification colonoscopy with narrow band imaging (Figure 1b) and then was resected in a single piece with cold snare polypectomy. This article is protected by copyright. All rights reserved.
March 14, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
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