The association of adjuvant therapy with survival at the population level following pancreatic adenocarcinoma resection.

BACKGROUND: Using a retrospective observational cohort approach, the overall survival (OS) following curative-intent resection of pancreatic adenocarcinoma (PC) was defined at the population level according to adjuvant treatment, and predictors of OS were identified. METHODS: Patients undergoing resection of PC in the province of Ontario between 2005 and 2010 were identified using the provincial cancer registry, and linked to databases that include all treatments received and outcomes experienced in the province. Pathology reports were abstracted for staging and margin status. Patients were identified as having received chemotherapy (CT), chemoradiation therapy (CRT), or no adjuvant treatment (NAT). Kaplan-Meier survival analysis of patients surviving ≥ 6 months was performed, and predictors of OS identified by log-rank test. Cox multivariable analysis was used to define independent predictors of OS. RESULTS: Among the 473 patients undergoing PC resection, the median survival was 17.8 months; for the 397 who survived ≥ 6 months following surgery, the 5-year OS for the CT, CRT, and NAT groups was 21%, 16%, and 17%, respectively (p = 0.584). Lymph node-negative patients demonstrated improved OS associated with chemotherapy on multivariable analysis (HR = 2.20, 95% CI = 1.25-3.83 for NAT vs. CT). CONCLUSIONS: Following PC resection, only patients with negative lymph nodes demonstrated improved OS associated with adjuvant chemotherapy.

Personalized Surgery for Gastric Adenocarcinoma: A Meta-analysis of D1 versus D2 Lymphadenectomy.

BACKGROUND: The recent publication of 5-year survival data for the Italian Gastric Cancer Study Group (IGCSG) D1 versus D2 lymphadenectomy for gastric cancer trial adds important data for analysis of whether a D2 lymphadenectomy improves survival. METHODS: Systematic searches were conducted using Medline, Embase, and the Cochrane Central Register of Controlled Trials from January 1, 1985 to February 1, 2014. Meta-analyses were performed using RevMan version 5 software. Long-term outcomes were analyzed. Subgroup analyses of T and N stage were performed. RESULTS: Outcomes of four randomized, controlled trials involving 1,599 patients (823 D1: 776 D2) enrolled from 1982 to 2005 were included for qualitative analysis and quantitative meta-analysis. Despite the addition of long-term survival data from the IGCSG, 5-year overall and nodal status survival was similar between D1 and D2 trials. However, subgroup analysis revealed a survival benefit for T3 patients (odds ratio 1.64, 95 % confidence interval 1.01-2.67) and a trend for survival benefit for advanced nodal stage (odds ratio 1.36, 95 % confidence interval 0.98-1.87) with D2 compared with D1 lymphadenectomy. CONCLUSIONS: As recent studies have demonstrated comparable short-term surgical outcomes for both D1 and D2 lymphadenectomies, consideration should be made for more extensive lymph node dissection among patients with advanced stage.

Optimal management of colorectal liver metastases in older patients: a decision analysis.

BACKGROUND: Comparative trials evaluating management strategies for colorectal cancer liver metastases (CLM) are lacking, especially for older patients. This study developed a decision-analytic model to quantify outcomes associated with treatment strategies for CLM in older patients. METHODS: A Markov-decision model was built to examine the effect on life expectancy (LE) and quality-adjusted life expectancy (QALE) for best supportive care (BSC), systemic chemotherapy (SC), radiofrequency ablation (RFA) and hepatic resection (HR). The baseline patient cohort assumptions included healthy 70-year-old CLM patients after a primary cancer resection. Event and transition probabilities and utilities were derived from a literature review. Deterministic and probabilistic sensitivity analyses were performed on all study parameters. RESULTS: In base case analysis, BSC, SC, RFA and HR yielded LEs of 11.9, 23.1, 34.8 and 37.0 months, and QALEs of 7.8, 13.2, 22.0 and 25.0 months, respectively. Model results were sensitive to age, comorbidity, length of model simulation and utility after HR. Probabilistic sensitivity analysis showed increasing preference for RFA over HR with increasing patient age. CONCLUSIONS: HR may be optimal for healthy 70-year-old patients with CLM. In older patients with comorbidities, RFA may provide better LE and QALE. Treatment decisions in older cancer patients should account for patient age, comorbidities, local expertise and individual values.

Rare case of fecaloma requiring endoscopic intervention in a 24-year-old female.

Fecalomas are a rare potential etiology for constipation experienced in children and the elderly. Large bowel obstructions due to fecalomas are preferably treated conservatively with laxatives and bowel rest. However, in the setting of severe corporostasis, more invasive procedures are required to prevent bowel ischemia and perforation. This case report describes a patient who presented to the emergency department with symptoms of large bowel obstruction and constipation, and she was found to have a fecaloma. Conservative interventions, including bowel rest and the administration of laxatives failed, prompting the need for more invasive therapies. During her admission, multiple flexible sigmoidoscopies were required to alleviate the obstruction. Ultimately, this case demonstrates an encounter of a patient with a sigmoid fecaloma from an unlikely demographic with few risk factors that required endoscopic intervention for treatment.

Rectal Tropism: An Extremely Rare Case of Prostate Cancer Recurrence With Metastasis to the Rectum Postradical Prostatectomy.

Prostate cancer is the most common noncutaneous cancer affecting men in the United States. It is a slow-growing tumor that can be missed during the nascent phase. Prostate cancer commonly metastasizes to the bones and nearby lymph nodes. However, cases of metastatic prostate cancer to the rectum are exceptionally rare. Such metastases may cause obstructive or malabsorption symptoms similar to those observed in primary rectal carcinoma. We present a very rare case of prostate cancer recurrence with rectal metastasis in an elderly male with a history of castration-resistant prostate carcinoma status postradical prostatectomy.

Cardiac veins: a review of the literature.

Cardiac veins have long stood in the shadow of their more extensively studied counterparts, the coronary arteries. The clinical importance of the coronary venous system, nonetheless, should not be underestimated. Intricate and beneficial therapeutic options are increasingly being developed that depend on knowledge of the structure of this venous network. Such interventions have been shown greatly to promote cardiac health, and to enhance the efficacy of cardiac pacing. A comprehensive appreciation of the architecture of the coronary venous system, therefore, is crucial to optimal cardiac care. It is possible to provide an overview of the arrangement of the cardiac veins, with the larger veins draining to the coronary sinus, and thence to the right atrium, but with smaller and minimal veins draining directly to the cavities of the atrial chambers. The venous pathways, nonetheless, are highly variable, making exceptions the commonly accepted rule. As such, unique solutions for imaging, and simple attentiveness to possible venous variations, can greatly enhance clinical outcomes. For example, identifying the diameter, course, and valves of the cardiac veins allows for anticipation of impediments during interventional procedures, and allows for informed clinical decision-making. Also of significance is awareness of alternate arrangements that may be encountered in terms of venous drainage, and the importance of intramural venous collecting spaces in these patterns. The objective of our review, therefore, is to explore and describe the anatomical distribution of the coronary veins.

Evaluating TNM stage prognostic ability in a population-based cohort of gastric adenocarcinoma patients in a low-incidence country.

OBJECTIVES: TNM stage is the preeminent cancer staging system and a fundamental determinant of disease prognosis. Our goal was to evaluate the predictive power of TNM stage for gastric adenocarcinoma (GAC), in a low-incidence country. METHODS: A province-wide chart review of GAC patients diagnosed from April 1, 2005 to March 31, 2008 was conducted in Ontario and linked to routinely collected vital status data with a follow-up on March 31, 2012. TNM staging was classified using the sixth and seventh Union International for Cancer Control/American Joint Committee on Cancer editions. Kaplan-Meier and log-rank tests compared stage-stratified survival estimates. Discrimination was evaluated using Harrell's C statistic. RESULTS: The cohort included 2366 patients. One- and 5-year survival was 43% and 17%. Using the sixth edition, 9% of patients had stage I disease, 5.4% stage II, 7.3% stage III, and 64% stage IV; 15% were not staged. Using the seventh edition, 9% were stage I, 7.7% stage II, 16% stage III, and 54% stage IV; 14% were not staged. Stage-stratified 5-year survival ranged from 68% to 7% with the sixth edition and from 70% to 4% with the seventh edition. Harrell's C statistic was 0.64 (0.63-0.65) for the broad sixth edition staging categories and 0.68 (0.67-0.69) for the broad seventh edition. Discriminative power was similar for the refined stage categories and across multiple subgroup analyses; it was best in non-metastatic patients. CONCLUSION: Existing staging systems for GAC used in North America predict individualized prognosis poorly. The creation of a more complex prediction tool is necessary to provide accurate and precise prognostication information to oncologists, patients, and their families.

Jules Germain Cloquet (1790-1883)--drawing master and anatomist.

Jules Germain Cloquet, the famed French anatomist, surgeon, and professor, may not be remembered as one of the pioneers of hernia surgery; however, his contributions have provided surgeons with detailed anatomical descriptions that have been useful in developing innovative surgical techniques. Cloquet has many eponyms associated with him, including: Cloquet's fascia, Cloquet's gland or lymph node of Cloquet, Cloquet's hernia, Cloquet's ligament, Cloquet's canal, and Cloquet's septum. A man blessed with artistic talents, Cloquet was the author of many theses, as well as anatomical volumes that were comparable to the works of other great anatomists of his time. His first thesis, entitled Recherches Anatomiques sur les Hernies de l'Abdomen, described the locations where inguinal and crural herniae are more likely to occur in terms of the cremaster muscle, the peritoneum, and the spermatic vessels. Wax sculpture training required extensive knowledge in the natural sciences, anatomy, physiology, and pathology, as were acquired by Jules Cloquet as a pupil of Achille-Cléophas Flaubert, the father of the famous French novelist Gustave Flaubert (author of Madame Bovary). Cloquet attracted many pupils with his innovative teaching style and implementation of anatomical preparations, drawings, and sketches on the black board with chalk. The legacy of this famed individual lives on today in the anatomical structures described by Cloquet.

Defining Communication Improvement Needs in General Surgery: An Analysis of Pages, Communications, Patterns, and Content☆?>.

OBJECTIVE: To describe patterns of pages communication to general surgery (GS) residents, identify the need for and develop strategies to improve interprofessional communication. DESIGN: Retrospective cohort study. SETTING: General surgery (GS) service at a tertiary care academic institution, Sunnybrook Health Sciences Centre, in Toronto, Ontario, Canada. PARTICIPANTS: All pages sent to GS residents over 4 weeks at an academic institution. Timing, training level of receiver and content of pages were captured. RESULTS: Communication priority was assigned by 2 independent reviewers-low (121+ min), medium (31-120min), high (6-30min), and immediate (0-5min) priority. Overall, 2 independent reviewers analyzed pages' content through an inductive process, and generated themes. Of 2025 pages retrieved, 963 (47.5%) contained exclusively a call back number. A median of 74 pages per day (range: 43-116) were received, with median page interval of 9.4 minutes (range: 0-640). Junior residents received 79.5% of pages. Timing of the pages was 43.9% weekday shift, 31.8% weeknight shift, and 24.3% weekend call. Communication priority was deemed low for 35.4% of pages, medium for 32.3%, high for 12.4%, and immediate for 0.7%. Content analysis of 1062 pages generated 5 major themes: nonurgent medical issue (54.0%), administrative (15.3%), communication (13.5%), emergencies (4.8%), and GS consultation requests (4.0%). Priority and content of pages varied according to training level and page timing. CONCLUSIONS: Pages to GS residents were frequent and most often of low priority. They were seldom related to urgent medical matters. Education and new communication strategies are warranted to reduce low priority pages.

Surgeons and their tools: a history of surgical instruments and their innovators. Part III: the medical student's best friend­retractors.

This is the third of five manuscripts reviewing the historical origins of some of the more commonly used surgical instruments and takes "time out" to remind current surgeons about the surgical pioneers on whose shoulders they now stand and whose inventions they now use.

Surgeons and their tools: a history of surgical instruments and their innovators. Part V: pass me the hemostat/clamp.

This is the last of five manuscripts reviewing the historical origins of some of the more commonly used surgical instruments and takes "time out" to remind current surgeons about the surgical pioneers on whose shoulders they now stand and whose inventions they now use.

Surgeons and their tools: a history of surgical instruments and their innovators. Part IV: pass me the forceps.

This is the fourth of five manuscripts reviewing the historical origins of some of the more commonly used surgical instruments and takes "time out" to remind current surgeons about the surgical pioneers on whose shoulders they now stand and whose inventions they now use.

Optimizing inter-professional communications in surgery: protocol for a mixed-methods exploratory study.

BACKGROUND: Effective nurse-physician communication is critical to delivering high quality patient care. Interprofessional communication between surgical nurses and surgeons, often through the use of pagers, is currently characterized by information gaps and interprofessional tensions, both sources of workflow interruption, potential medical error, impaired educational experience, and job satisfaction. OBJECTIVE: This study aims to define current patterns of, and understand enablers and barriers to interprofessional communication in general surgery, in order to optimize the use of communication technologies, teamwork, provider satisfaction, and quality and safety of patient care. METHODS: We will use a mixed-methods multiphasic approach. In phase 1, a quantitative and content analysis of alpha-numeric pages (ANP) received by general surgery residents will be conducted to develop a paging taxonomy. Frequency, timing (on-call vs regular duty hours), and interval between pages will be described using a 4-week sample of pages. Results will be compared between pages sent to junior and senior residents. Finally, using an inductive analysis, two independent assessors will classify ANP thematically. In Phase 2, a qualitative constructivist approach will explore stakeholders' experiences with interprofessional communication, including paging, through interviews and shadowing of 40 residents and 40 nurses at two institutions. Finally, a survey will be developed, tested, and administered to all general surgery nurses and residents at the same two institutions, to evaluate their attitudes about the effectiveness and quality of interprofessional communication, and assess their satisfaction. RESULTS: Describing the profile of current pages is the first step towards identifying areas and root causes of IPC inefficiency. This study will identify key contextual barriers to surgical nurse-house staff communication, and existing interprofessional knowledge and practice gaps. CONCLUSIONS: Our findings will inform the design of a guideline and tailored intervention to improve IPC in order to ensure high quality patient care, optimal educational experience, and provider satisfaction.

Surgeons and their tools: a history of surgical instruments and their innovators--part I: place the scissors on the Mayo stand.

This is the first of five articles reviewing the historical origins of some of the more commonly used surgical instruments and takes "time out" to remind current surgeons about the surgical pioneers on whose shoulders they now stand and whose inventions they now use.

Surgeons and their tools: a history of surgical instruments and their innovators--Part II: The surgeon's wand-evolution from knife to scalpel to electrocautery.

This is the second of five articles reviewing the historical origins of some of the more commonly used surgical instruments and takes "time out" to remind current surgeons about the surgical pioneers on whose shoulders they now stand and whose inventions they now use.

Current role of minimally invasive approaches in the treatment of early gastric cancer.

Despite declining incidence, gastric cancer remains one of the most common cancers worldwide. Early detection in population-based screening programs has increased the number of cases of early gastric cancer, representing approximately 50% of newly detected gastric cancer cases in Asian countries. Endoscopic mucosal resection and endoscopic submucosal dissection have become the preferred therapeutic techniques in Japan and Korea for the treatment of early gastric cancer patients with a very low risk of lymph node metastasis. Laparoscopic and robotic resections for early gastric cancer, including function-preserving resections, have propagated through advances in technology and surgeon experience. The aim of this paper is to discuss the recent advances in minimally invasive approaches in the treatment of early gastric cancer.

Surveillance patterns after curative-intent colorectal cancer surgery in Ontario.

BACKGROUND: Postoperative surveillance following curative-intent resection of colorectal cancer (CRC) is variably performed due to existing guideline differences and to the limited data supporting different strategies. OBJECTIVES: To examine population-based rates of surveillance imaging and endoscopy in patients in Ontario following curative-intent resection of CRC with no evidence of recurrence, as well as patient or disease factors that may predispose certain groups to more frequent versus less frequent surveillance; to provide insight to the care patients receive in the presence of conflicting guidelines, in efforts to help improve care of CRC survivors by identifying any potential underuse or overuse of particular surveillance modalities, or inequalities in access to surveillance. METHOD: A retrospective cohort study was conducted using data from the Ontario Cancer Registry and several linked databases. Ontario patients undergoing curative-intent CRC resection from 2003 to 2007 were identified, excluding patients with probable disease relapse. In the five-year period following surgery, the number of imaging and endoscopic examinations was determined. RESULTS: There were 4960 patients included in the study. Over the five-year postoperative period, the highest proportion of patients who underwent postoperative surveillance received the following number of tests for each modality examined: one to three abdominopelvic computed tomography (CT) scans (n=2073 [41.8%]); one to three abdominal ultrasounds (n=2443 [49.3%]); no chest CTs, one to three chest x-rays (n=2385 [48.1%]); and two endoscopies (n=1845 [37.2%]). Odds of not receiving any abdominopelvic imaging (CT or abdominal ultrasound) were higher in those who did not receive adjuvant chemotherapy (OR 6.99 [95% CI 5.26 to 9.35]) or those living in certain geographical areas, but were independent of age, sex and income. Nearly all patients (n=4473 [90.2%]) underwent ≥1 endoscopy at some point during the follow-up period. CONCLUSION: In contrast to findings from similar studies in other jurisdictions, most Ontario CRC survivors receive postoperative surveillance with imaging and endoscopy, and care is equitable across sociodemographic groups, although unexplained geographical variation in practice exists and warrants further investigation.

Aberrant hepatic arterial anatomy and the whipple procedure: lessons learned.

Appreciation and study of hepatic arterial anatomical variability is essential to the performance of a pancreaticoduodenectomy to avoid surgical complications such as bleeding, hepatic ischemia/failure, and anastomotic leak/stricture. Awareness of this variability permits the surgeon to adapt the surgical technique to deal with anomalies identified preoperatively or intraoperatively thereby preventing unnecessary surgical morbidity and mortality. The objective of our study is to provide a comprehensive review of the anatomic arterial anomalies and discuss surgical strategies that will equip the surgeon to deal with all anomalies that may be encountered a priori or en passant during the course of a Whipple procedure.