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https://www.readbyqxmd.com/read/29623585/the-effect-of-dose-escalation-for-large-squamous-cell-carcinomas-of-the-anal-canal
#1
R N Prasad, J Elson, J Kharofa
PURPOSE: Chemoradiation allows for organ preservation in patients with anal cancer, but patients with large tumors (> 5 cm) have elevated rates of locoregional recurrence. With conformal radiation techniques, there is interest in dose escalation to decrease local recurrence in patients with large tumor size. METHODS/PATIENTS: The National Cancer Database (NCDB) was used to identify patients with anal cancer from 2004 to 2013 with tumors > 5 cm. Adult patients who received definitive chemoradiation were included...
April 5, 2018: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29594584/genital-marginal-failures-after-intensity-modulated-radiation-therapy-imrt-in-squamous-cell-anal-cancer-no-higher-risk-with-imrt-when-compared-to-3dcrt
#2
V Dell'Acqua, J Kobiela, F Kraja, M C Leonardi, A Surgo, M A Zerella, S Arculeo, C Fodor, R Ricotti, M G Zampino, S Ravenda, G Spinoglio, R Biffi, A Bazani, R Luraschi, S Vigorito, P Spychalski, R Orecchia, R Glynne-Jones, B A Jereczek-Fossa
Intensity-modulated radiotherapy (IMRT) is considered the preferred option in squamous cell canal cancer (SCAC), delivering high doses to tumor volumes while minimizing dose to surrounding normal tissues. IMRT has steep dose gradients, but the technique is more demanding as deep understanding of target structures is required. To evaluate genital marginal failure in a cohort of patients with non-metastatic SCAC treated either with IMRT or 3DCRT and concurrent chemotherapy, 117 patients with SCAC were evaluated: 64 and 53 patients were treated with IMRT and 3DCRT techniques, respectively...
March 28, 2018: Medical Oncology
https://www.readbyqxmd.com/read/29582182/diagnosis-and-management-of-fecal-incontinence
#3
REVIEW
Arnold Wald
PURPOSE OF REVIEW: The purpose of this review is to highlight current and newer therapeutic approaches to treat fecal incontinence in patients who do not respond to conservative measures. RECENT FINDINGS: Neurostimulation techniques, injection of bulking agents, and radiofrequency energy delivery to the anal canal have been proposed and tested for fecal incontinence over the last decade. Sacral stimulation is both effective and durable and is now the most popular of the invasive techniques whereas percutaneous tibial stimulation, radiofrequency energy, and bulking agents are either less effective or their evaluation has been handicapped by suboptimal study designs...
March 26, 2018: Current Gastroenterology Reports
https://www.readbyqxmd.com/read/29581689/synchronous-squamous-cell-carcinoma-of-the-anorectum-and-proctosigmoid-a-case-report
#4
REVIEW
Y C Madhu
Primary squamous cell carcinoma of the rectum is extremely rare. Squamous cell carcinoma of the anorectum is a known entity evaluation and treatment protocols have been well defined. The occurrence of squamous cell carcinoma of rectosigmoid in concurrence with squamous cell carcinoma of the anal canal is extremely rare and the first case to be reported in the literature. A 48-year-old male patient presented with difficulty in passing stools. The clinical examination, colonoscopy, and the histopathology revealed synchronous proctosigmoid and the anorectal neoplasm...
February 2018: Indian Journal of Surgery
https://www.readbyqxmd.com/read/29577225/-progress-in-the-treatment-of-surgical-procedures-for-slow-transit-constipation
#5
Dong Wei
Slow transit constipation (STC) is the most common type of chronic constipation, and surgical treatment is one of the most important means for the treatment of slow transit constipation. With the introduction of the concept of STC and the normalization of STC treatment, development of surgical treatment in slow transit constipation is continuous, and the innovation of the operation method in slow transit constipation is continuous as well from partial colectomy, total colectomy (including ileorectal anastomosis, anorectal anastomosis and ileum bag anal canal anastomosis) to subtotal colectomy (including ileosigmoid colon anastomosis, isoperistaltic cecum rectal anastomosis and antiperistaltic cecum rectal anastomosis)...
March 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29577210/-transanal-conformal-resection-for-super-low-rectal-cancer
#6
Zheng Lou, Wei Zhang
Intersphincteric resection(ISR) is a valuable anus-preserving operation that avoids the need for permanent stoma in patients with super low rectal cancer. Recently, with the application and promotion of ISR, the rate of anus-preservation has been greatly elevated, however, some patients following ISR had poor anal function. Based on the knowledge of anal canal anatomical features for better anal function, we propose conformal sphincter-preserving operation (CSPO) for super low rectal cancer, which is a new integrated anus-preservation procedure with total mesorectal excision (TME), coloanal anastomosis, pull through resection, anal canal dissection, local resection and natural orifice transluminal endoscopic surgery technology...
March 25, 2018: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/29566903/the-gastrointestinal-microbiota-and-its-role-in-oncogenesis
#7
REVIEW
S Y Lam, J Yu, S H Wong, M P Peppelenbosch, G M Fuhler
Advances in research techniques have made it possible to map the microbial communities in the gastrointestinal (GI) tract, where the majority of bacteria in the human body reside. Disturbances in these communities are referred to as dysbiosis and have been associated with GI cancers. Although dysbiosis is observed in several GI malignancies, the specific role of these changes has not been understood to the extent of Helicobacter pylori (HP) in gastric cancer (GC). This review will address the bacterial communities along the GI tract, from the oral cavity to the anal canal, particularly focusing on bacterial dysbiosis and carcinogenesis...
December 2017: Best Practice & Research. Clinical Gastroenterology
https://www.readbyqxmd.com/read/29551740/high-prevalence-of-anal-canal-high-risk-human-papillomavirus-infection-in-patients-with-crohn-s-disease
#8
Lucine Vuitton, Elise Jacquin, Anne-Laure Parmentier, Elise Crochet, Francine Fein, Anne-Claire Dupont-Gossart, Laurianne Plastaras, Charles-Henri Bretagne, Frédéric Mauny, Stéphane Koch, Jean-Luc Prétet, Christiane Mougin, Séverine Valmary-Degano
BACKGROUND & AIMS: The increasing incidence of anal canal carcinomas requires better knowledge on anal human papillomavirus (HPV) infection. We aimed to assess anal canal HPV infection prevalence and risk factors among patients seen at a gastroenterology department in France. METHODS: We analyzed anal tissue samples collected from 469 consecutive patients (median age 54 years, 52% women), including 112 who received immunosuppressant therapies and 101 with inflammatory bowel disease (70 with Crohn's disease), who underwent colonoscopy examinations from April 1, 2012 to April 30, 2015...
March 15, 2018: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29532211/correction-to-anal-canal-squamous-cell-cancer-are-surgical-alternatives-to-chemoradiation-just-as-effective
#9
Kunal Suradkar, Emmanouil P Pappou, Steven A Lee-Kong, Daniel L Feingold, Ravi P Kiran
One of the author's middle name of this article was incorrectly published as "Emmanouil E. Pappou." This is now presented correctly in this article as "Emmanouil P. Pappou."
March 13, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29525901/perianal-minimally-invasive-surgery-pamis-for-rectal-stump-resection-after-previous-colectomy
#10
Andreas Lorenz, Pamela Kogler, Marcus Huth, Reinhold Kafka-Ritsch, Dietmar Öfner, Alexander Perathoner
PURPOSE: Resection of a long rectal stump after previous colectomy or Hartmann procedure often requires a combined transperitoneal and transperineal approach because of limited access through a perineal incision alone. Risks associated with this procedure include iatrogenic injury to bowels, nerves, ureters, vessels and sexual organs. This study reports on the feasibility and safety of perianal minimally invasive surgery (PAMIS) for the resection of long rectal stumps that would otherwise require a combined transperitoneal and perianal approach...
March 10, 2018: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/29519410/cone-beam-ct-based-inter-fraction-localization-errors-for-tumors-in-the-pelvic-region
#11
Cristina Garibaldi, Cristiana Fodor, Giulia Riva, Damaris Patricia Rojas, Samantha Dicuonzo, Elisa Pace, Giuseppe Fanetti, Paolo De Marco, Veronica Dell'acqua, Giulia Marvaso, Maria Cristina Leonardi, Roberta Lazzari, Federica Cattani, Marta Cremonesi, Roberto Orecchia, Barbara Alicja Jereczek-Fossa
PURPOSE: To evaluate inter-fraction tumor localization errors (TE) in the RapidArc® treatment of pelvic cancers based on CBCT. Appropriate CTV-to PTV margins in a non-IGRT scenario have been proposed. METHODS: Data of 928 patients with prostate, gynecological, and rectum/anal canal cancers were retrospectively analyzed to determine systematic and random localization errors. Two protocols were used: daily online IGRT (d-IGRT) and weekly IGRT. The latter consisted in acquiring a CBCT for the first 3 fractions and subsequently once a week...
February 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29514581/strangulation-of-giant-rectal-prolapse
#12
Imad El Moussaoui, Augustin Limbga, Manke Dika, Abdelilah Mehdi
Introduction Rectal prolapse is the complete protrusion of the rectum through the anal canal, incarceration rarely complicates rectal prolapse. Even more rarely, it becomes strangulated and gangrenous, necessitating emergency surgery. Case presentation We present the first reported case of strangulated acute rectal prolapse as the first manifestation of rectal prolapse. The patient was a 26-year-old man who presented with a 20×6 cm semi-spherical mass extra-anally. Rectosigmoidectomy with sacral rectopexy was performed, resecting 20 cm of the incarcerated rectum and sigmoid colon...
January 1, 2018: Scottish Medical Journal
https://www.readbyqxmd.com/read/29501209/optimal-image-guided-radiation-therapy-strategy-for-organs-at-risk-sparing-in-radiotherapy-of-the-prostate-including-pelvic-lymph-nodes
#13
A van Nunen, P P G van der Toorn, T C G Budiharto, D Schuring
BACKGROUND AND PURPOSE: Purpose of this study was to quantify the OAR dose for different position correction strategies, and to determine which strategy is most optimal for treating patients on the prostate and pelvic lymph nodes. MATERIALS AND METHODS: For 30 patients, four different treatment plans were made reflecting different correction strategies: online correction on bony anatomy; offline correction on bony anatomy; online correction on the prostate fiducials; using 1 cm margins around both CTVs...
February 28, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29498141/normal-values-for-assessment-of-anal-sphincter-morphology-anorectal-motion-and-pelvic-organ-prolapse-with-mri-in-healthy-women
#14
P Tirumanisetty, D Prichard, J G Fletcher, S Chakraborty, A R Zinsmeister, A E Bharucha
BACKGROUND: Endoanal MRI and MR defecography are used to identify anal sphincter injury and disordered defecation. However, few studies have evaluated findings in asymptomatic healthy people. The effects of BMI and parity on rectoanal motion and evacuation are unknown. METHODS: In 113 asymptomatic females (age 50 ± 17 years, Mean ± SD) without risk factors for anorectal trauma, anal sphincter appearance, anorectal motion, and pelvic organ prolapse were evaluated with MRI...
March 2, 2018: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29490558/primary-surgery-with-or-without-postoperative-radiotherapy-in-early-stage-squamous-cell-carcinoma-in-the-anal-canal-and-anal-margin
#15
Otilia Leon, Oskar Hagberg, Anders Johnsson
BACKGROUND: Standard treatment of localized squamous cell carcinoma of the anus (SCCA) is radiotherapy (RT) combined with chemotherapy, that is, chemoradiation (CRT). Primary surgery has a limited role, but is a recommended treatment for small well differentiated SCCA localized in the anal margin, with re-excision or postoperative RT/CRT in case of involved surgical margins. The evidence supporting these strategies is limited. AIM: To study the recurrence patterns and survival outcomes in patients treated with surgery alone compared with surgery followed by postoperative RT/CRT...
March 1, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29482779/treatment-of-squamous-cell-carcinoma-of-the-anal-canal-a-new-strategies-with-anti-egfr-therapy-and-immunotherapy
#16
REVIEW
A Casadei Gardini, A Passardi, L Fornaro, P Rosetti, M Valgiusti, S Ruscelli, M Monti, C Casadei, F Pagan, G L Frassineti
The incidence of squamous cell carcinoma of the anal canal (SCAC) is increasing in both sexes but the standard treatment remains that of 20 years ago. However, interesting data have recently emerged on the use of anti-epidermal growth factor receptor (EGFR) agents and immunotherapy in advanced disease. Thus, new avenues of research are opening up that will hopefully lead to more effective therapeutic strategies. We provide an overview of the latest studies published on this tumor and discuss the possible future therapeutic options for combination therapy, anti-EGFR treatment and radiotherapy...
March 2018: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29481422/anal-and-cervical-high-risk-human-papillomavirus-genotyping-in-women-with-and-without-genital-neoplasia
#17
Amy J Bregar, Beth Cronin, Christine Luis, Paul DiSilvestro, Steven Schechter, Latha Pisharodi, Christina Raker, Melissa Clark, Katina Robison
OBJECTIVE: The aim of the study was to compare the prevalence, genotypes, and rates of concomitant anal and cervical high-risk human papillomavirus (HR-HPV) in women with and without a history of HPV-related genital neoplasia. MATERIALS AND METHODS: This was a prospective cohort study conducted from December 2012 to February 2014. Women with a history of neoplasia were considered the high-risk group. Women without a history of neoplasia were considered the low-risk group...
April 2018: Journal of Lower Genital Tract Disease
https://www.readbyqxmd.com/read/29466950/hpv-positive-wild-type-tp53-and-p16-overexpression-correlate-with-the-absence-of-residual-tumors-after-chemoradiotherapy-in-anal-squamous-cell-carcinoma
#18
Paulo C Soares, Eliana S Abdelhay, Luiz Claudio S Thuler, Bruno Moreira Soares, Samia Demachki, Gessica Valéria Rocha Ferro, Paulo P Assumpção, Leticia Martins Lamarão, Luis Felipe Ribeiro Pinto, Rommel Mario Rodríguez Burbano
BACKGROUND: Anal residual tumors are consensually identified within six months of chemoradiotherapy and represent a persistent lesion that may have prognostic value for overall survival. The aim of this study was to evaluate the association of HPV and HIV status, p16 expression level and TP53 mutations with the absence of residual tumors (local response) in Squamous Cell Carcinoma (SCC) of the anal canal after chemoradiotherapy. METHODS: We performed a study on 78 patients with SCC of the anal canal who submitted to chemoradiotherapy and were followed for a six-month period to identify the absence or presence of residual tumors...
February 21, 2018: BMC Gastroenterology
https://www.readbyqxmd.com/read/29464744/primary-peri-anal-adenocarcinoma-of-intestinal-type-a-new-proposed-entity
#19
Pelvender S Gill, Newton A C S Wong
AIMS: The currently recognised subtypes of anal canal/peri-anal adenocarcinoma are those arising from low rectal mucosa or columnar cuff, fistula-related tumours and anal gland carcinoma. This report presents two examples of a hitherto undescribed subtype of peri-anal adenocarcinoma with an intestinal phenotype. METHODS AND RESULTS: A 74-year-old man had a peri-anal tumour locally excised, whereas a 73-year-old female underwent an abdominoperineal resection for peri-anal Paget's disease with an underlying carcinoma...
February 21, 2018: Histopathology
https://www.readbyqxmd.com/read/29456640/comparative-study-of-ultrasonic-elastography-and-conventional-ultrasound-in-diagnosis-of-malignant-anus-neoplasm
#20
Yicheng Zhu, Shuhao Deng, Yuan Zhang, Quan Jiang
The application value of conventional ultrasound and ultrasonic elastography (UE) in preoperative diagnosis and combined diagnosis of malignant anus neoplasms was investigated. One hundred and twenty patients, whose mass was detected by digital rectal examination, were examined using UE and conventional ultrasound before operation, and the results were compared with those of histopathological examinations after operation, so that the accuracy and imaging features of UE as well as UE combined with conventional ultrasound in diagnosing malignant anus neoplasm were analyzed...
March 2018: Experimental and Therapeutic Medicine
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