The incidence of esophagogastric junction (EGJ) adenocarcinoma has increased worldwide. As the EGJ is located at the boundary between the thoracic and abdominal cavities, the optimal surgical approach is a subject of debate and estimation of the esophageal invasion length (EIL) is an important factor in its selection.

Postoperative pain management is important for enhanced recovery. High-dose oral acetaminophen is effective; however, the safety of its long-term use has not been established in gastrointestinal surgeries. This study aimed to investigate drug-induced liver injury (DILI) in patients with colorectal cancer using high-dose acetaminophen.

Various polymers have been used as postsurgical antiadhesive materials; however, the mechanisms underlying their efficacy remain unclear. Intermediate water has been found to prevent the adhesion between polymer molecules and proteins or cells. The present study investigated the role of intermediate water retained in the polymer in alleviating postsurgical pericardial adhesion.

This study examined the learning curve of segmentectomy using the "fused surgery" approach.

Anastomotic leakage is a major postoperative complication of colorectal surgery. LigaSure™ is used commonly for vessel-sealing, but its use for intestinal anastomosis or closure, particularly the healing process, is underreported. We conducted this study to evaluate the feasibility of using LigaSure™ for intestinal wall closure, compared with hand-sewn methods.

A hamster adhesion model was used to investigate the mechanism by which polyglycolic acid (PGA) sheets reinforce the surgical site through the acceleration of postoperative adhesion formation.

Adjuvant chemotherapy (AC) for stage III disease is recognized as a standard treatment and is routinely performed in patients with colon cancer (CC). However, the recommendation for AC is mainly based on studies performed in past environments, where D3 lymphadenectomy was not routinely performed.

Laparoscopic distal gastrectomy is now widely used in East Asia and worldwide with different preferences and outcomes. This study aimed to compare the short- and long-term outcomes and preferences between two high-volume gastric cancer centers in Korea and China.

Identifying risk factors for breast cancer-related lymphedema (BCRL) is crucial for its prevention, necessitating large-scale epidemiological studies. Despite their suitability for large-scale surveys, to our knowledge, databases have not been the basis of any study done to investigate BCRL risk factors. This study aimed to test the hypothesis that a database-based study would be useful for identifying BCRL risk factors.

Right liver tumors involving the right adrenal gland or which are located close to the inferior vena cava (IVC) often make it difficult to mobilize the right liver during laparoscopic surgery. As an alternative approach, retroperitoneoscopy offers a relatively easy approach to the dorsal aspect of the right side of the liver and area around the IVC. Therefore, we combined laparoscopic liver resection with retroperitoneoscopy ("retlap liver resection") to exploit the benefits of these methods. The preceding retroperitoneoscopy can be used to obtain a dorsal margin, which is difficult to achieve using laparoscopy alone. In such cases, a retroperitoneoscopic approach can be applied to the dorsal side of the adrenal gland, without mobilizing the right liver. Six patients underwent retlap liver resection between 2020 and 2022 without operative complications. Because no previous reports have described laparoscopic liver resection with retroperitoneoscopy, we introduce our approach and provide a video of the procedure.

To evaluate inflammatory markers to identify patients at risk of enhanced recovery after surgery (ERAS) failure following laparoscopic colectomy.

The outcomes of direct oral anticoagulant use after noncardiac thoracic surgery have not been elucidated. We compared the safety and efficacy of the postoperative use of direct oral anticoagulants versus warfarin.

To compare postoperative anemia rates after one-anastomosis gastric bypass (OAGB) with those after sleeve gastrectomy (SG) in a large nationwide, population-based cohort study.

The increasing detection of small pulmonary nodules on computed tomography (CT) warrants simple and effective nodule localization methods. We describe our clinical experience using an experimental computer that displays virtual thoracoscopic images. This device constructs three-dimensional images from preoperative CT scans and simulates the deflated lung parenchyma in the lateral decubitus position. Five patients underwent lung resection using this technology. The device provided images that closely resembled actual thoracoscopic images in all cases. This method addresses the limitations of other localization techniques such as allergic reactions and mechanical marker-related complications. The method only requires preoperative CT images, and the process is semi-automatically performed by specifying the nodule location, thoracoscopic camera insertion site, and camera angle. This study is still in the preliminary phase and has several limitations. However, this method has the potential to accurately predict nodule locations and eliminate the many risks associated with other techniques.

The importance of tumor markers is well established; yet little is known about their prognostic value for patients with obstructive colorectal cancer (OCRC). We investigated the clinical significance of carcinoembryonic antigen (CEA) and CA 19-9 levels in patients with non-metastatic OCRC, who underwent insertion of a self-expandable metallic stent and curative surgery.

Intraductal papillary neoplasm of the bile duct (IPNB) is a biliary neoplasm characterized by intraductal papillary growth and varying degrees of malignant transformation. This study aimed to identify effective prognostic factors (PFs) for predicting the prognosis of IPNB after surgical resection, addressing the gap in the higher level evidence. We systematically searched databases from their inception to October 10, 2023. Data on 12 predetermined PFs were collected and subjected to a meta-analysis. Forest plots were used to summarize the findings. Fifteen studies with a total of 2311 patients were included. Among the PFs examined, extrahepatic tumor location (HR, 2.97; 95% CI 1.68-5.23), subclassification type 2 (HR, 2.62; 95% CI 1.45-4.76), R1 resection (HR, 2.47; 95% CI 1.73-3.51), elevated CA19-9 level (HR, 3.25; 95% CI 1.91-5.54), tumor multiplicity (HR, 2.65; 95% CI 1.40-5.02), and adjacent organ invasion (HR, 3.17; 95% CI 2.01-5.00) were associated with a poorer prognosis. Additionally, the combined HR values indicated that lymph node metastasis and poor tumor differentiation were linked to a worse prognosis, although both exhibited significant heterogeneity. Our study offers valuable insights for enhancing postoperative prognostication and treatment decision-making for IPNB patients with IPNB. These findings warrant further validation in future prospective studies.

Distinguishing colorectal from gastroduodenal perforations is clinically important and challenging. We aimed to establish a scoring model based on objective findings (excluding computed tomography findings) for the diagnosis of colorectal perforation and its differentiation from gastroduodenal perforation.

Stoma outlet obstruction (SOO) is a serious complication of restorative proctocolectomy (RPC) and ileal pouch-anal anastomosis (IPAA). When the ileal mesentery to the pouch is under excessive tension, the ileum near the ileostomy twists easily, causing SOO. Loop-end ileostomy (EI) for fecal diversion was introduced in 2021 to prevent SOO, and we aimed to verify whether temporary EI reduces the incidence of SOO in RPC and IPAA patients relative to loop ileostomy (LI).

Abdominoperineal resection (APR), commonly known as "Miles' operation," is a pivotal technique in rectal cancer surgery. While Miles was credited with formalizing the procedure in 1908, Japanese surgeons Ito and Torikata independently developed a similar approach in 1904, achieving comparable outcomes. Ito and Miles shared several concepts, and each described a critical anatomic challenge during surgery. Ito and Torikata introduced a two-team approach in 1906 that improved surgical safety and efficiency. This article explores Ito and Torikata's contributions and their role in the global development of APR.

To evaluate the outcomes of laparoscopic resection of colorectal cancer in non-elite cases.

Surgical knot-tying requires careful selection of the appropriate technique for optimal outcomes; however, evidence is lacking about the common ligation techniques combining square and slip knots (combination knots). This study investigates the strength of a combination knot, compared with other techniques.