Publications by authors named "Michael Ka-Wah Li"

Prevention of colorectal cancer (CRC) depends largely on the detection and removal of colorectal polyps. Despite the advances in endoscopic techniques, there are still a subgroup of polyps that cannot be treated purely by endoscopic approach, which comprise of about 10-15% of all the polyps. These so-called "difficult colorectal polyps" are polyps with large size, morphology, at difficult location, scarring or due to recurrence, which have historically been managed by surgical segmental resection.

View Article and Find Full Text PDF

Laparoscopic colorectal surgery has rapidly developed since the 1980s. Relative to open surgery, it offers the benefits of less invasiveness and earlier recovery. However, when a mini-laparotomy wound is needed to retrieve the specimen, the benefits of minimally invasive surgery may be compromised as a result of pain- and wound-related complications.

View Article and Find Full Text PDF

Background: We conducted a randomized study of a laparoscopic technique for removing left-sided colon tumors that can reduce postoperative pain and other wound-related complications compared to the conventional technique. It is a novel technique of hybrid natural orifice translumenal endoscopic surgery (NOTES) colectomy (HNC) whereby laparoscopic colonic mobilization, transection, and anastomosis are performed intracorporeally. The specimen is then delivered through the anus using the transanal endoscopic operation (TEO) device, precluding the need for mini-laparotomy.

View Article and Find Full Text PDF

Introduction: We previously conducted a randomized trial comparing the endo-laparoscopic approach (i.e. placing self-expanding metallic stents followed by laparoscopic resection) and conventional open surgery in the treatment of obstructing left-sided colon cancer.

View Article and Find Full Text PDF

Objectives: To assess the spontaneous passage rate for patients being treated with alfuzosin 10mg daily after presenting with an acute ureteral stone compared with a control group, and to assess the respective pain control status.

Methods: This was a prospective randomized controlled trial. Patients presenting with an acute ureteral stone (size 5-10mm) were enrolled and randomized into a medical expulsive therapy (MET) group or control group.

View Article and Find Full Text PDF

Objective: To identify the risk factors associated with unplanned admission after day-case haemorrhoidectomy.

Methods: This was a retrospective review of the outcomes of patients who underwent elective, intended day-case haemorrhoidectomy in a surgical institution between January 2005 and December 2009. Data were generated from a computerized database.

View Article and Find Full Text PDF

This study aimed to assess the feasibility and long-term outcome of laparoscopic total mesorectal excision for middle and lower rectal cancer. Retrospective assessment was performed on 612 patients with middle and low rectal cancer in the surgery department of our hospital. Three-hundred and three patients underwent laparoscopic total mesorectal excision (LTME), and 309 patients underwent open TME (OTME).

View Article and Find Full Text PDF

Objective: To compare self-expanding metal stents with emergency open surgery in the treatment of obstructing left-sided colon cancer.

Design: A randomized controlled trial.

Setting: An acute care hospital.

View Article and Find Full Text PDF

Objective: To review the initial experience and compare the results of hand-assisted laparoscopic distal gastrectomy (HALDG), totally laparoscopic distal gastrectomy (TLDG), and open distal gastrectomy (ODG) in the treatment of gastric cancer in a regional hospital.

Methods: Consecutive patients who received distal gastrectomy for stage 1 or 2 gastric cancer were reviewed retrospectively. Lymphatic dissection and intracorporeal anastomosis were initially performed using the HALDG approach, and subsequently the TLDG approach.

View Article and Find Full Text PDF

Gastrointestinal stromal tumor (GIST) commonly occurs in the stomach. We would like to report an uncommon presentation of gastric GIST with gastroduodenal intussuception. A patient with known history of gastric GIST at fundus for 10 years presented to the casualty department with recurrent epigastric pain, deranged liver function, and hyperamylasemia.

View Article and Find Full Text PDF

Objective: The aim of this study is to evaluate the short-term outcomes and long-term survival of laparoscopic rectal cancer resection at a single institution with 579 cases over a 15-year period.

Summary Background Data: The use of laparoscopic resection for colon cancer has been shown to be safe with comparable oncological outcomes. However, the role of laparoscopic resection for rectal cancer is still controversial with few studies looking into long-term outcomes.

View Article and Find Full Text PDF

An unusual case of small bowel obstruction in a patient with "virgin abdomen" was successfully diagnosed and the localized pathology was elucidated by a computed tomography scan, and the case was successfully treated by laparoscopy.

View Article and Find Full Text PDF

Objective: The aim of this study was to evaluate the incidence of postoperative deep vein thrombosis (DVT) in Chinese patients who underwent laparoscopic resection of rectal or sigmoid cancer in the absence of thromboprophylaxis.

Methods: Patients with adenocarcinoma of the sigmoid colon or rectum scheduled for laparoscopic resection were recruited. Neither chemoprophylaxis nor mechanical methods against DVT were employed.

View Article and Find Full Text PDF

Ruptured retroperitoneal paraganglioma is a rare cause of acute abdomen. Its clinical presentation and laparoscopic features have seldom been reported in the literature. Herein, we report a case of ruptured retroperitoneal paraganglioma that presented as acute abdomen, and its subsequent management.

View Article and Find Full Text PDF

Objective: Laparoscopic colectomy has been proved to be both technically and oncologically feasible. However, the approach has been criticized for its procedural complexity and long operative time as a result of the loss of tactile feedback and absence of depth perception. The advent of hand-access devices offered a potential solution to these problems.

View Article and Find Full Text PDF

Background: Laparoscopic appendectomy has been widely practiced for uncomplicated appendicitis; various reports demonstrated its merits in assisting diagnosis, reducing postoperative pain, analgesic requirement, and incidence of wound infection. The role of laparoscopy in management of complicated appendicitis, ie, gangrenous, perforated appendicitis and appendiceal abscess, remains undefined. Currently, the choice of operative approach is mostly at the surgeons' discretion.

View Article and Find Full Text PDF

Endovascular abdominal aneurysm repair (EVAR) is popular because of its low invasiveness and feasibility for high-risk patients. Endoleak is common after EVAR and is characterized by blood flow within the aneurysm sac but outside the stent graft. Type II or collateral endoleak commonly results from retrograde filling of the aneurysm from collateral visceral vessels, lumbar, inferior mesenteric, accessory renal or sacral arteries.

View Article and Find Full Text PDF

Background: Laparoscopic cholecystectomy (LC) is the gold standard for symptomatic cholecystolithiasis. Technical maturation and advances in instrumentation have enabled the application of this procedure for acute cholecystitis (AC). We review the evolving role of LC for AC in our institution.

View Article and Find Full Text PDF

Oesophageal carcinoma typically manifests as ulcerative growth. Cases of oesophageal tuberculosis mimicking carcinoma of the oesophagus have been reported and create considerable diagnostic difficulty. Abdominal tuberculosis, however, is an uncommon extrapulmonary manifestation of tuberculosis.

View Article and Find Full Text PDF

Despite advances in endoscopy and imaging, acute gastrointestinal (GI) bleeding of obscure origin in children presents a challenge to pediatric gastroenterologist. Bleeding Meckel's diverticulum (MD) commonly presents with acute episode of lower GI bleeding. A conventional diagnostic algorithm includes endoscopy, technetium 99m pertechnetate scintigraphy, angiography, and exploratory laparotomy.

View Article and Find Full Text PDF

Background: Bezoar-induced small-bowel obstruction (SBO) is an uncommon surgical emergency. Accurate preoperative diagnosis is notoriously difficult, and conventional management often necessitates laparotomy. Recent articles demonstrate the feasibility of laparoscopy in the management of SBO.

View Article and Find Full Text PDF

Background: Abdominal tuberculosis is an uncommon extra-pulmonary manifestation of tuberculosis.

Methods: Case report and literature review.

Results: Herein, we report an unusual case of ruptured tuberculous mesenteric cold abscess, which was managed by laparotomy for diagnosis and drainage, and post-operative chemotherapy.

View Article and Find Full Text PDF

Adult onset diaphragmatic hernia is a rare condition with variable clinical manifestations. The majority of adult-onset diaphragmatic hernia is associated with trauma. Blunt thoracic and abdominal trauma associated with a 5% to 7% incidence of diaphragmatic injury, and in 3% to 15% for those with penetrating injury.

View Article and Find Full Text PDF