In recent years, natural orifice specimen extraction surgery (NOSES) has been widely used in surgery of colorectal cancer. The rapid development of NOSES is mainly attributed to its own great advantages and values, including the reduction of surgical trauma, the acceleration of postoperative recovery and the reduction of adverse psychological reactions for patients. These advantages of NOSES are also important embodiment and perfect interpretation of the organ functional protection. Organ functional preservation is a hot topic in surgery today, and it is also an inevitable requirement for minimally invasive surgery. Essentially, NOSES and organ functional preservation are proposed in the same background, and the goals are highly compatible. NOSES is an important practitioner of organ functional preservation, and organ functional preservation is also the vane of the development of the theoretical system of NOSES. These two items complement each other and together constitute the important element in the development of modern minimally invasive surgery. In order to comprehensively discuss the relationship between NOSES and organ functional protection, we elaborate the important role and value of functional protection in NOSES from five key procedures of colorectal surgery, namely surgical approach, extent of resection, lymph node dissection, digestive tract reconstruction and specimen extraction.
Colorectal Neoplasms/surgery* ; Digestive System Surgical Procedures ; Humans ; Laparoscopy/methods* ; Natural Orifice Endoscopic Surgery/methods* ; Specimen Handling ; Treatment Outcome

OBJECTIVE: The present study aimed to determine the differences in outcomes between natural orifice transluminal endoscopic surgery-assisted vaginal hysterectomy (NAVH) and conventional laparoscopy-assisted vaginal hysterectomy (LAVH). METHODS: We retrospectively reviewed the charts of patients who between July 2012 and September 2015, were diagnosed as having benign uterine disease such as uterine myoma, endometriosis, or adenomyosis and managed via NAVH or LAVH in a single-center (Eulji University Hospital). Data such as age, body weight, height, parity, operation time, intra/post-operative complications, and uterus weight were obtained from the clinical charts. NAVH and LAVH recipients were matched 1:3 in terms of baseline characteristics, and the 2 groups were compared regarding surgical outcomes. RESULTS: Of the 160 patients with benign uterine disease included in the present study. Forty received NAVH and remaining 120 received LAVH. There were significant differences between the groups regarding operation time and hemoglobin change. Notably, although the operation time was shorter for LAVH, hemoglobin change was lower for NAVH. Additionally, although maximum hospitalization duration was shorter for LAVH, the average length of hospitalization was similar between NAVH and LAVH. There were no significant differences between the groups in terms of other variables. CONCLUSION: NAVH may become a new alternative surgical method of choice for hysterectomy, as it represents a clinically feasible and safe approach; moreover is superior to LAVH in terms of bleeding loss.
Adenomyosis ; Body Weight ; Endometriosis ; Female ; Hemorrhage ; Hospitalization ; Humans ; Hysterectomy ; Hysterectomy, Vaginal* ; Laparoscopy ; Leiomyoma ; Methods ; Natural Orifice Endoscopic Surgery ; Parity ; Postoperative Complications ; Retrospective Studies ; Uterine Diseases ; Uterus

Natural orifice transluminal endoscopic surgery (NOTES) is the latest surgical technique for inserting an endoscope through the mouth, anus, vagina etc., and for performing surgery with mucosal incision only, i.e., without skin incision. Recently, a number of researchers have applied NOTES to thyroid surgery in several trials, with the aim of removing the thyroid gland through oral cavity. The transoral endoscopic thyroid surgery became widely known after Anuwong et al. reported successful results for their first 60 patients and it has become increasingly recognized as a feasible novel surgical procedure. The purpose of this article is to review and summarize the existing literature, and describe in detail the preoperative considerations, rationale for patient selection, surgical method and postoperative management for transoral thyroid surgery.
Anal Canal ; Endoscopes ; Humans ; Methods ; Mouth ; Natural Orifice Endoscopic Surgery ; Patient Selection ; Skin ; Thyroid Gland* ; Thyroidectomy ; Vagina

Gastric outlet obstruction, afferent or efferent limb obstruction, and biliary obstruction among patients with altered anatomy often require surgical intervention which is associated with significant morbidity and mortality. Endoscopic dilation for benign etiologies requires multiple sessions, whereas self-expandable metal stents used for malignant etiologies often fail due to tumor in-growth. Lumen apposing metal stents, placed endoscopically with the intent of creating a de-novo gastrointestinal anastomosis bypassing the site of obstruction, can potentially achieve similar efficacy, with a much lower complication rate. In our study cohort (n=79), the composite technical success rate and clinical success rate was 91.1% (72/79) and 97.2% (70/72), respectively. Five different techniques were used: 43% (34/79) underwent the balloon-assisted method, 27.9% (22/79) underwent endoscopic ultrasound-guided balloon occluded gastro-jejunostomy bypass, 20.3% (16/79) underwent the direct technique, 6.3% (5/79) underwent the hybrid rendezvous technique, and 2.5% (2/79) underwent natural orifice transluminal endoscopic surgery (NOTES)-assisted procedure. All techniques required an echoendoscope except NOTES. In all, 53.2% (42/79) had non-cautery enhanced Axios stent, 44.3% (35/79) had hot Axios stent, and 2.5% (2/79) had Niti-S spaxus stent. Symptom-recurrence was seen in 2.8%, and 6.3% had a complication (bleeding, abdominal pain or peritonitis). All procedures were performed by experts at centers of excellence with adequate surgical back up.
Abdominal Pain ; Cohort Studies ; Endosonography ; Extremities ; Gastric Outlet Obstruction ; Humans ; Methods ; Mortality ; Natural Orifice Endoscopic Surgery ; Stents*

There have been an evolutionary development with respect to the resection modality for the treatment of the gastric neoplasms such as gastric subepithelial tumors (SETs) or early gastric cancers (EGCs). Hybrid natural orifice transluminal endoscopic surgery (hybrid NOTES) played a central role in the process of development. In the earlier period, the non-exposure type hybrid NOTES such as laparoscopy and endoscopy cooperative surgery (LECS), endoscope-assisted wedge resection (EAWR), and laparoscopy-assisted endoscopic full-thickness resection (LAEFTR) has been introduced by several investigators. However, a concern about a spillage of gastric content including the tumor cells has been continuously raised among the clinicians. Accordingly, the non-exposure type hybrid NOTES such as combination of laparoscopic and endoscopic approaches to neoplasia with a non-exposure technique (CLEAN-NET), non-exposed endoscopic wall-inversion surgery (NEWS), and hybrid neo-endoscopic full-thickness resection (hybrid neo-EFTR) have been developed to the clinicians. Although most of studies about hybrid NOTES for the treatment of the gastric neoplasms have a small number of patients and require further validations, those are enough to receive our attention. Here, we describe and summarize the development process of the innovative resection methods for gastric neoplasms using hybrid NOTES approach.
Endoscopy ; Humans ; Laparoscopy ; Methods* ; Natural Orifice Endoscopic Surgery* ; Research Personnel ; Stomach Neoplasms*

Laparoscopy has become the standard surgery mode of right hemicolectomy, including conventional laparoscopy, hand-assisted laparoscopic surgery (HALS), single-port laparoscopic surgery (SPLS), natural orifices translumenal endoscopic surgery (NOTES) and robotic laparoscopy. How to select reasonable laparoscopic mode could be confusing sometimes. For patients, safety, cost-effectiveness and radical cure of the surgery are very important. For doctors, advance and convenience of the surgery must be considered as well. How do we choose a win-win operation method Conventional laparoscopic surgery is the basis of all the minimally invasive surgeries, and total mesocolon resection with D3 lymphadenectomy is an important technical foundation of right hemicolectomy. HALS has some advantages in patients with obesity, abdominal surgery history, intestinal adhesion or intestinal obstruction. SPLS and NOTES have minimized abdominal trauma leading to faster recovery, but have certain technical difficulties, especially NOTES. Although robotic laparoscopic surgery is advanced, but its high cost limits its popularization. Surgeons should integrate their technical levels, hospital equipment, and conditions of patients, then choose reasonable operation mode of right hemicolectomy.
Abdomen ; surgery ; Clinical Decision-Making ; methods ; Colectomy ; methods ; Hand-Assisted Laparoscopy ; Humans ; Intestinal Obstruction ; Laparoscopy ; methods ; Lymph Node Excision ; methods ; Mesocolon ; surgery ; Minimally Invasive Surgical Procedures ; methods ; Natural Orifice Endoscopic Surgery ; Obesity ; Robotic Surgical Procedures ; methods ; Tissue Adhesions

PURPOSE: This study investigated the surgical outcomes of canalicular trephination combined with endoscopic dacryocystorhinostomy (DCR) in patients with a distal or common canalicular obstruction. It also identified the factors affecting surgical success rates associated with this technique. METHODS: We retrospectively reviewed the medical records of 57 patients (59 eyes) in whom a canalicular obstruction was encountered during endoscopic DCR. All patients were treated with endoscopic DCR, followed by canalicular trephination and silicone tube placement. The surgical outcome was categorized as a functional success according to the patient's subjective assessment of symptoms, including epiphora, and as an anatomical success according to a postoperative nasolacrimal duct irrigation test. Surgical success rates were compared based on age, sex, location of the obstruction, number of silicone tubes, and experience of the surgeon. RESULTS: Functional success was achieved in 55 of 59 eyes (93%) at one month, 50 eyes (84%) at three months, and 46 eyes (78%) at six months. Anatomical success was achieved in 58 of 59 eyes (98%) at one month, 52 eyes (88%) at three months, and 50 eyes (84%) at six months. There was a statistically significant difference in surgical outcome according to the experience of the surgeon. The anatomical success rate at the six-month follow-up exam was 95.4% in the >5 years of experience group, and 53.3% in the <5 years of experience group (p = 0.008, Pearson chi-square test). CONCLUSIONS: The success rate of canalicular trephination combined with endoscopic DCR in patients with a distal or common canalicular obstruction decreased gradually during the six-month follow-up period. In particular, patients undergoing procedures with experienced surgeons tended to show excellent surgical outcomes at the six-month follow-up exam.
Adult ; Aged ; Dacryocystorhinostomy/*methods ; Female ; Follow-Up Studies ; Humans ; Lacrimal Apparatus/*surgery ; Lacrimal Duct Obstruction/*therapy ; Male ; Middle Aged ; *Natural Orifice Endoscopic Surgery ; Postoperative Complications ; Retrospective Studies ; Treatment Outcome ; Young Adult

OBJECTIVETo investigate the feasibility and advantages of transurethral transumbilical laparoendoscopic single-site surgery (TU-LESS) for radical prostatectomy.

METHODSFive patients with prostate cancer underwent TU-LESS for radical prostatectomy, with a four-channel single-port device inserted into a 2. 5 cm periumbilical incision and another placed through the urethra, followed by analysis of the perioperative data.

RESULTSAll the operations were successfully accomplished, with neither conversion to open surgery nor additional channel. The mean operation time, intraoperative blood loss, and postoperative hospital stay were 168 min, 120 ml, and 15 d, respectively. No severe perioperative complications were observed. TNM stage classification manifested T2cN0M0 in 2 cases and T2bN0M0 in the other 3. Postoperative pathology showed no negative surgical margins in any of the cases.

CONCLUSIONTU-LESS is safe and feasible for radical prostatectomy and can reduce the complication of low urinary tract surgery by single-site laparoendoscopy.

Blood Loss, Surgical ; Feasibility Studies ; Humans ; Laparoscopy ; Length of Stay ; Male ; Natural Orifice Endoscopic Surgery ; methods ; Operative Time ; Prostatectomy ; methods ; Prostatic Neoplasms ; surgery ; Umbilicus ; surgery ; Urologic Surgical Procedures, Male ; methods

Natural-orifice transluminal endoscopic surgery (NOTES) using flexible endoscopy has attracted attention as a minimally invasive surgical method that does not cause an operative wound on the body surface. However, minimizing the number of devices involved in endoscopic, compared to laparoscopic, surgeries has remained a challenge, causing endoscopic surgeries to gradually be phased out of use. If a flexible endoscopic full-thickness suturing device and a counter-traction device were developed to expand the surgical field for gastrointestinal-tract collapse, then endoscopic full-thickness resection using NOTES, which is seen as an extension of endoscopic submucosal dissection for full-thickness excision of tumors involving the gastrointestinal-tract wall, might become an extremely minimally invasive surgical method that could be used to resect only full-thickness lesions approached by the shortest distance via the mouth. It is expected that gastroenterological endoscopists will use this surgery if device development is advanced. This extremely minimally invasive surgery would have an immeasurable impact with regard to mitigating the burden on patients and reducing healthcare costs. Development of a new surgical method using a multipurpose flexible endoscope is therefore considered a socially urgent issue.
Dissection/economics/instrumentation/*methods ; Gastrointestinal Neoplasms/pathology/*surgery ; Health Care Costs ; Humans ; Medical Illustration ; Mouth ; Natural Orifice Endoscopic Surgery/economics/instrumentation/*methods ; Upper Gastrointestinal Tract/*surgery

Worldwide, peroral endoscopic myotomy (POEM) has achieved remarkable initial outcomes in the treatment of achalasia. In China, POEM has developed very quickly since the first case was performed in our center in August 2010. With experience, we have successfully performed POEM for special cases (such as pediatric patients, patients with sigmoid-type esophagus, and patients with recurrent symptoms after previous surgery) and have altered our technique to achieve long-term symptom remission and simplify the POEM procedure. These changes include posterior wall incision, full-thickness myotomy, a "push-and-pull" technique for myotomy, and water-jet assisted POEM. In this article, our experiences in POEM are summarized, including changes in technique, applications of the procedure, and the management of possible complications.
Adult ; Child ; China ; Esophageal Achalasia/*surgery ; Esophagoscopy/*methods ; Esophagus/surgery ; Humans ; Natural Orifice Endoscopic Surgery/contraindications/*methods