Publications by authors named "Manoj Raval"

Background: The objective of this study was to compare the anastomotic leak rates between powered and manual circular staplers in elective left-sided colorectal resections.

Methods: A retrospective cohort study of elective left-sided colorectal resections before and after implementation of a powered circular stapler at a tertiary care center was conducted. The manual stapler group consisted of consecutive resections performed between January 2016 to December 2016 and the powered stapler group, between September 2021 and December 2022.

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Background: Transanal total mesorectal excision is a novel surgical treatment for mid to low rectal cancers. Norwegian population data have raised concerns about local recurrence in patients treated with transanal total mesorectal excision.

Objective: This study aimed to analyze local recurrence and disease-free survival in patients treated by transanal total mesorectal excision for rectal cancer at a high-volume tertiary center.

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Objective: This systematic review and meta-analysis seeks to evaluate the impact of total neoadjuvant therapy (TNT) for rectal cancers on surgical complications and surgical pathology when compared with standard long-course chemoradiotherapy (LCRT).

Background: The oncological benefits of TNT are well published in previous meta-analyses, but there is little synthesized information on how it affects surgical outcomes. A recent study has suggested an increase in local recurrence and higher rates of breached total mesorectal excision (TME) plane in TNT patients.

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Background: Total mesorectal excision is the standard of care for stage I rectal cancer. Despite major advances and increasing enthusiasm for modern endoscopic local excision (LE), uncertainty remains regarding its oncologic equivalence and safety relative to radical resection (RR).

Objectives: To assess the oncologic, operative, and functional outcomes of modern endoscopic LE compared to RR surgery in adults with stage I rectal cancer.

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Objective: To examine the safety and efficacy of iltamiocel, an investigational cellular therapy of autologous muscle-derived cells, as a treatment for fecal incontinence (FI) in adults.

Background: Limited therapeutic options are available for patients with FI refractory to conservative treatments. Cell therapy using autologous muscle-derived cells represents a promising, minimally invasive approach for restoring anal sphincter function.

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Background: Transanal endoscopic surgery is an organ-sparing treatment for early rectal cancer. Patients with advanced lesions are recommended for total mesorectal excision. However, some patients have prohibitive comorbidities or refuse major surgery.

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Aim: The objective of this study was to evaluate the safety and effectiveness of transanal endoscopic microsurgery for rectal neuroendocrine tumours.

Method: A retrospective cohort study of all pathology-confirmed rectal neuroendocrine tumours treated by transanal endoscopic microsurgery from April 2007 to December 2020 at a tertiary care centre was performed. Demographic, clinical, radiographic and pathological data were collected.

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Background: The preferred perineal repair method for full-thickness rectal prolapse is the Altemeier procedure, a perineal proctosigmoidectomy with handsewn anastomosis. A recently described variant of this procedure combines the resection and anastomosis into 1 step by means of linear and transverse stapling. There are few published data comparing the characteristics and outcomes of these 2 approaches.

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Background: The increasing risk of young-onset colorectal cancer (yCRC) in adults < 50 years has called for better understanding of patients’ pathways to diagnosis. This study evaluated patterns of healthcare utilization before diagnosis of yCRC. Methods: Using linked administrative health databases in British Columbia, Canada, we identified yCRC cases and cancer-free controls matched (1:10) on age, sex, and healthcare utilization.

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Aim: Patients undergoing colorectal surgery face high rates of emergency room visits and readmission to hospital. These unplanned hospital visits lead to both increased patient anxiety and health care costs. The aim of this study is to evaluate the use of mobile application to support patients undergoing colorectal surgery following discharge from hospital.

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Purpose: Organ-sparing therapy for early-stage I/IIA rectal cancer is intended to avoid functional disturbances or a permanent ostomy associated with total mesorectal excision (TME). The objective of this phase II trial was to determine the outcomes and organ-sparing rate of patients with early-stage rectal cancer treated with neoadjuvant chemotherapy followed by transanal excision surgery (TES).

Methods: This phase II trial included patients with clinical T1-T3abN0 low- or mid-rectal adenocarcinoma eligible for endoscopic resection who were treated with 3 months of chemotherapy (modified folinic acid-fluorouracil-oxaliplatin 6 or capecitabine-oxaliplatin).

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Aim: Discrepancy between patient expectations and outcomes can negatively affect patient satisfaction and quality of life. We aimed to assess patient expectations of bowel, urinary, and sexual function after rectal cancer treatments, and whether a preoperative education video changed expectations.

Methods: A total of 45 patients were assessed between January 2018 and January 2021 in a tertiary care hospital in Vancouver, Canada.

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Aim: Shared decision-making between patients and clinicians is important to surgical practice and patients' perceptions of their healthcare experience. This study aims to measure associations between patients' perceptions of their shared decision-making (SDM) process and health-related quality of life among a cohort of patients choosing surgical management of an elective surgical procedure, haemorrhoidectomy.

Methods: This study is a single-site study based in Vancouver, Canada.

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Aim: The main objective of this study was to compare the oncological outcomes of patients undergoing abdominoperineal resection (APR) versus low anterior resection (LAR) through a transanal total mesorectal excision (taTME) approach.

Method: A total of 360 adult patients with a diagnosis of rectal cancer were enrolled at participating centres from the Canadian taTME Expert Collaboration. Forty-three patients received taTME-APR and received 317 taTME-LAR.

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Purpose: Postoperative urinary retention (POUR) is a known morbidity after colorectal surgery. This study investigated the effect of prophylactic tamsulosin on urinary retention rates after colorectal surgery.

Methods: A retrospective cohort study of male patients 50 years or older undergoing elective colonic and rectal resections from May 2014 to November 2019 was performed.

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Surgical site infections (SSI) pose significant morbidity after colorectal surgery. We sought to document current practices in colorectal surgery SSI prevention in British Columbia (BC). Reporting the current provincial landscape on SSI prevention helps to understand the foundation upon which improvements can take place.

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Article Synopsis
  • The incidence of early-onset colorectal cancer (diagnosed in individuals under 50) is on the rise globally, with distinct clinical and molecular characteristics compared to late-onset cases.
  • Factors contributing to this increase may include diet, obesity, antibiotic use, and changes in gut microbiome, with most cases occurring sporadically rather than being genetically inherited.
  • There is a need for tailored preventive and therapeutic approaches for early-onset colorectal cancer, as younger patients often present with more severe disease stages but similar outcomes to older patients after treatment.
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Aim: Perianal sepsis in Crohn's disease (CD) fistulas is managed with antibiotics and surgical drainage; a noncutting seton is used for an identified transsphincteric fistula tract. The optimal management following seton placement for initial control of perianal sepsis remains to be determined. Our main aim was to assess the success rates of curative surgery, seton removal or long-term indwelling seton in patients with and without CD.

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Article Synopsis
  • A study in British Columbia investigated the rising incidence of young-onset colorectal cancer (yCRC) in individuals aged 20 to 60, focusing on the critical screening age of 50 years.
  • Researchers analyzed health databases from 1986 to 2016 and found a consistent increase in yCRC cases, particularly noting a significant jump in incidence rates when individuals turned 50.
  • The research highlighted a concerning trend, especially among women and younger men, suggesting a need to reconsider current screening age guidelines to better address this growing health issue.
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Background: The role of MRI-detected EMVI (mrEMVI) as a reliable prognostic factor in rectal cancer has been emphasized in recent years but this finding remains underreported by many institutions.

Objective: This review aimed to demonstrate the importance of pre- and post-treatment MRI-detected EMVI as independent prognostic factors of adverse oncologic outcomes in patients undergoing neoadjuvant therapy followed by total mesorectal excision.

Methods: This review was designed using the PRISMA guidelines.

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Aim: To determine the impact of surgical technique on the incidence of perineal hernia after abdominoperineal resection (APR).

Methods: A retrospective analysis was performed on patients who underwent APR between May 2007 and March 2018 at our institution using our prospectively maintained Colorectal Cancer Database. Demographic and clinical parameters were compared between the open APR (OAPR) and laparoscopic APR (LAPR) groups using Student's t test, chi-squared, or Fisher's exact test.

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Introduction: Transanal total mesorectal excision (taTME) is a novel approach to surgery for rectal cancer. The technique has gained significant popularity in the surgical community due to the promising ability to overcome technical difficulties related to the access of the distal pelvis. Recently, Norwegian surgeons issued a local moratorium related to potential issues with the safety of the procedure.

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