Daily medical education for confined students during coronavirus disease 2019 pandemic: A simple videoconference solution.

The outbreak of coronavirus disease 2019 caused by severe acute respiratory syndrome coronavirus 2 infection has recently spread globally and is now a pandemic. As a result, university hospitals have had to take unprecedented measures of containment, including asking nonessential staff to stay at home. Medical students practicing in the surgical departments find themselves idle, as nonurgent surgical activity has been canceled, until further notice.

Laparoscopic resection for T4 colon cancer: perioperative and long-term outcomes.

Laparoscopic resection has been considered a contraindication for T4 colorectal cancer. It is argued that it is a challenging and demanding procedure with high conversion rate, inadequate oncologic clearance and surgical outcomes. There are only a few data on short- and long-term operative results.

Laparoscopic Colorectal Cancer Resection in High-Volume Surgical Centers: Long-Term Outcomes from the LAPCOLON Group Trial.

Background: Strong evidence has confirmed the benefit of laparoscopy in colorectal cancer resection but remains a challenging procedure. It is not clear that such promising results in selected patients translate into a favorable risk-benefit balance in real practice. We conducted a multicenter national observational registry to assess operative and oncologic long-term outcomes following laparoscopic colorectal cancer resection.

Does pathologic response of rectal cancer influence postoperative morbidity after neoadjuvant radiochemotherapy and total mesorectal excision?

Background: A pathologic complete response (pCR) can be observed in up to 25% of patients after preoperative chemoradiotherapy for rectal cancer and is associated with an improved long-term prognosis. However, few data are available regarding the effect of pCR on postoperative morbidity. This study aimed to assess the impact of the pCR on postoperative outcomes after laparoscopic total mesorectal excision (TME).

Erasable and reversible wrinkling of halogenated rubber surfaces.

Few surfaces can exist at rest in either wrinkled or unwrinkled states and switch reversibly between these states. Here, we report a new approach to creating reversibly wrinkling systems using the halogenation of rubber to induce a local increase in the glass-transition temperature within a thin layer at the surface. Such systems are obtained by the bromination of molded rubber films.

Type 2 diabetes mellitus as a risk factor for intestinal resection in patients with superior mesenteric vein thrombosis.

Background & Aims: The most serious complication of acute mesenteric vein thrombosis (MVT) is acute intestinal ischaemia requiring intestinal resection or causing death. Risk factors for this complication are unknown. To identify risk factors for severe intestinal ischaemia leading to intestinal resection in patients with acute MVT.

Increased intestinal absorption by segmental reversal of the small bowel in adult patients with short-bowel syndrome: a case-control study.

Background: Segmental reversal of the small bowel (SRSB) is proposed in patients with short-bowel syndrome (SBS) as a rehabilitative therapy, but its effects on absorption have not been studied.

Objective: We aimed to determine intestinal macronutrient absorption and home parenteral nutrition (HPN) dependence in SBS patients with intestinal failure.

Design: We included in a retrospective study all consecutive patients who had an SRSB between 1985 and 2010 and underwent a study of macronutrient absorption.

Long-term outcome after extensive intestinal resection for chronic radiation enteritis.

Introduction: Management of chronic radiation enteritis is often controversial, particularly due to the risk of short bowel syndrome.

Methods: One hundred and seven chronic radiation enteritis patients with short bowel syndrome were studied retrospectively between 1980 and 2009. Survival and home parenteral nutrition dependence rates were evaluated with univariate and multivariate analysis.

Bilobar colorectal liver metastases: a new model for preclinical studies.

This study aimed to develop a new model of colorectal liver metastases (LM) in the rat. Both single macroscopic and multiple bilobar microscopic LM were investigated, as this closely resembled the human situation, before right hepatectomy was performed for 'single' right LM. The single macroscopic LM was elicited by direct injection of DHD/K12 colorectal cancer cells under the capsule of the median liver lobe in immunocompetent BDIX rats.

Effects of a multimodal management strategy for acute mesenteric ischemia on survival and intestinal failure.

Background & Aims: Acute mesenteric ischemia (AMI) is an emergency with a high mortality rate; survivors have high rates of intestinal failure. We performed a prospective study to assess a multidisciplinary and multimodal management approach, focused on intestinal viability.

Methods: In an Intestinal Stroke Center, we developed a multimodal management strategy involving gastroenterologists, vascular and abdominal surgeons, radiologists, and intensive care specialists; it was tested in a pilot study on 18 consecutive patients with occlusive AMI, admitted to a tertiary center from July 2009 to November 2011.

Segmental reversal of the small bowel can end permanent parenteral nutrition dependency: an experience of 38 adults with short bowel syndrome.

Objective: This study aimed to assess the results of segmental reversal of the small bowel (SRSB) in patients with short bowel syndrome (SBS) who were "permanently" dependent on parenteral nutrition (PN) and to identify possible prognostic factors for weaning.

Summary Background Data: SRSB is a nontransplant surgical option for patients with SBS who require long-term PN. Few studies have reported outcomes in humans.

The expression of the hypoxia markers CA9 and CXCR4 is correlated with survival in patients with neuroendocrine tumours of the ileum.

Background/aim: The hypoxia-inducible factor pathway regulates the expression of a diverse group of molecules such as CA9 and CXCR4. Our aim was to investigate the expression of these markers in a series of patients with an ileal neuroendocrine tumour (IET) at various stages of tumorigenesis.

Methods: The immunohistochemical expression of CA9 and CXCR4 was examined in 51 patients with a resected IET.

Safety, feasibility, and short-term outcomes of single port access colorectal surgery: a single institutional case-matched study.

Background: Feasibility of single port access (SPA) colorectal surgery has been established for various procedures from ileocecal resection to proctectomy. Nevertheless, its benefits compared to conventional laparoscopy still need to be assess. The aim of this study was to compare SPA to conventional colorectal laparoscopic surgery in a single institutional case-matched study.

Mortality after colorectal cancer surgery: a French survey of more than 84,000 patients.

Objectives: This study aimed to identify risk factors of postoperative 30-day mortality (POM) after colorectal cancer resection.

Summary: Meta-analyses have failed to demonstrate any significant benefit of laparoscopy in terms of postoperative mortality. This could be explained by the lack of a large sample size.

Predictors of tumor response after preoperative chemoradiotherapy for rectal adenocarcinomas.

The ability to predict response after chemoradiotherapy in rectal adenocarcinoma may allow selecting patients to whom less invasive surgical treatment could be proposed. Tumor hypoxia has been implicated in the mechanisms of resistance to chemoradiotherapy in several malignancies. The aim was to identify morphological criteria and molecular markers of hypoxia associated with chemoradiotherapy response.

Selective portal vein ligation and embolization induce different tumoral responses in the rat liver.

Background: Portal vein ligation (PVL) and portal vein embolization (PVE) are used to enhance liver volume before hepatectomy for colorectal liver metastasis (LM). Impact of such techniques on tumor growth is not well known. This experimental study aimed to assess impact of PVE and PVL on LM growth in a murine model of colorectal LM.

Rectal cancer surgery with or without bowel preparation: The French GRECCAR III multicenter single-blinded randomized trial.

Objective: To assess with a single-blinded, multicenter, randomized trial, the postoperative results in patients undergoing sphincter-saving rectal resection for cancer without preoperative mechanical bowel preparation (MBP).

Background: The collective evidence from literature strongly suggests that MBP, before elective colonic surgery, is of no benefit in terms of postoperative morbidity. Very few data and no randomized study are available for rectal surgery and preliminary results conclude toward the safety of rectal resection without MBP.

Which magnetic resonance imaging findings accurately evaluate inflammation in small bowel Crohn's disease? A retrospective comparison with surgical pathologic analysis.

Background: The aim was to evaluate the value of magnetic resonance imaging (MRI) findings in Crohn's disease (CD) in correlation with pathological inflammatory score using surgical pathology analysis as a reference method.

Methods: CD patients who were to undergo bowel resection surgery underwent MR enterography before surgery. The CD pathological inflammatory score of the surgical specimens was classified into three grades: mild or nonactive CD, moderately active CD, and severely active CD; fibrosis was also classified into three grades: mild, moderate, and severe.

Selective portal vein embolization and colorectal liver metastases in rat: a new experimental model for tumor growth study.

Background: Portal vein embolization (PVE) has been proposed to induce hypertrophy of liver before major resection. Because there are some concerns about the effect on tumor growth, experimental research is needed, requiring reliable small animal model. The aim was to assess technical feasibility of PVE model in rat and to report colorectal liver metastases (LM) tumor growth.

Redo surgery for failed colorectal or coloanal anastomosis: a valuable surgical challenge.

Background: Redo surgery (RS) in patients with failed anastomosis is a rare procedure, and data about this surgery are lacking. The aim of this study was to examine the operative results and long-term outcomes of RS.

Methods: All patients who underwent RS between 1999 and 2008 were included.

Surgery for intestinal Crohn's disease recurrence.

Background: Operative therapy for Crohn's disease (CD) recurrence is supposed to be more complex and demanding than primary resection. The purpose of this study was to assess a postoperative course after reoperation for the recurrence of CD.

Methods: From 1998 to 2008, 61 patients underwent reoperation for the recurrence of CD.

Laparoscopic subtotal colectomy for acute or severe colitis with double-end ileo-sigmoidostomy in right iliac fossa.

The aim of this study was to report an original technique of laparoscopic subtotal colectomy (STC) for acute colitis complicating inflammatory bowel disease where both ileostomy and sigmoidostomy are located in the right iliac fossa. Thirty-five consecutive laparoscopic STC cases with ileo-sigmoidostomy in right iliac fossa were retrospectively reviewed. There was no mortality.

A laparoscopic approach to iterative ileocolonic resection for the recurrence of Crohn's disease.

Background: Laparoscopy is a valuable approach to primary ileocecal resection for ileocolonic Crohn's disease (CD). This study aimed to evaluate the feasibility of using laparoscopy for reoperation in the case of ileocolonic CD recurrence and to determine the risk factors and consequences of conversion for these patients.

Methods: From 1998 to 2008, 57 patients underwent 62 reoperations for CD recurrence.

Outcomes of laparoscopic colorectal surgery in obese and nonobese patients: a case-matched study of 180 patients.

Background: Because it has been suggested that obese patients may be at higher risk of morbidity and mortality after surgery, we conducted a prospective case-matched study to compare outcomes of elective laparoscopic colorectal surgery in obese and nonobese patients.

Methods: Sixty-two consecutive nonselected obese patients (body mass index > or =30 kg/m(2)) were matched with 118 nonobese patients. Postsurgical mortality and morbidity were defined as in-hospital death and complications.