Exploring the umbilical and vaginal port during minimally invasive surgery.

This article focuses on the anatomy, literature, and our own experiences in an effort to assist in the decision-making process of choosing between an umbilical or vaginal port. Umbilical access is more familiar to general surgeons; it is thicker than the transvaginal entry, and has more nerve endings and sensory innervations. This combination increases tissue damage and pain in the umbilical port site. The vaginal route requires prophylactic antibiotics, a Foley catheter, and a period of postoperative sexual abstinence. Removal of large specimens is a challenge in traditional laparoscopy. Recently, there has been increased interest in going beyond traditional laparoscopy by using the navel in single-incision and port-reduction techniques. The benefits for removal of surgical specimens by colpotomy are not new. There is increasing interest in techniques that use vaginotomy in multifunctional ways, as described under the names of culdolaparoscopy, minilaparoscopy-assisted natural orifice surgery, and natural orifice transluminal endoscopic surgery. Both the navel and the transvaginal accesses are safe and convenient to use in the hands of experienced laparoscopic surgeons. The umbilical site has been successfully used in laparoscopy as an entry and extraction port. Vaginal entry and extraction is associated with a lower risk of incisional hernias, less postoperative pain, and excellent cosmetic results.

Surgical management of neurovascular bundle in uterine fibroid pseudocapsule.

The uterine fibroid pseudocapsule is a fibro-neurovascular structure surrounding a leiomyoma, separating it from normal peripheral myometrium. The fibroid pseudocapsule is composed of a neurovascular network rich in neurofibers similar to the neurovascular bundle surrounding a prostate. The nerve-sparing radical prostatectomy has several intriguing parallels to myomectomy. It may serve either as a useful model in modern fibroid surgical removal, or it may accelerate our understanding of the role of the fibrovascular bundle and neurotransmitters in the healing and restoration of reproductive potential after intracapsular myomectomy. Surgical innovations, such as laparoscopic or robotic myomectomy applied to the intracapsular technique with magnification of the fibroid pseudocapsule surrounding a leiomyoma, originated from the radical prostatectomy method that highlighted a careful dissection of the neurovascular bundle to preserve sexual functioning after prostatectomy. Gentle uterine leiomyoma detachment from the pseudocapsule neurovascular bundle has allowed a reduction in uterine bleeding and uterine musculature trauma with sparing of the pseudocapsule neuropeptide fibers. This technique has had a favorable impact on functionality in reproduction and has improved fertility outcomes. Further research should determine the role of the myoma pseudocapsule neurovascular bundle in the formation, growth, and pathophysiological consequences of fibroids, including pain, infertility, and reproductive outcomes.

Ultrasound evaluation of uterine healing after laparoscopic intracapsular myomectomy: an observational study.

STUDY QUESTION: Can uterine scar healing after laparoscopic intracapsular myomectomy (LIM) be adequately monitored by traditional two-dimensional (2D) ultrasound (US) and Doppler velocimetry? SUMMARY ANSWER: The myometrial area of the scar after LIM can be followed by 2D US and Doppler velocimetry. WHAT IS KNOWN ALREADY: Apart from post-surgical adhesions, the main concern linked to laparoscopic myomectomy is the quality of healing of the myometrial incision: it has been suggested that US could be useful for assessing uterine scars after myomectomy. However, no diagnostic method has yet been widely accepted to assess the healing process. STUDY DESIGN, SIZE, DURATION: A cohort prospective study (level of evidence II-2), run in University-affiliated hospitals: 149 women with symptomatic uterine fibroids (UFs) underwent LIM, between January 2007 and October 2011. During follow up 13 patients withdrew from the study. PARTICIPANTS/MATERIALS, SETTING, METHODS: After LIM, all patients were followed by traditional 2D US scanning and Doppler velocimetry on Days: 0, 1, 7, 30 and 45. Authors evaluated: number, size and location of UFs, scar diameter and Doppler velocimetry and resistance index (RI) of the uterine arteries, at their ascending branch. MAIN RESULTS AND THE ROLE OF CHANCE: The uterine examination showed a significant (P < 0.05) progressive reduction of uterine scar area from 78% of the previous UF location on the first day, to 19% on 30th day, and <4% on the 45th day. There was no correlation with the size of the fibroid or the relative reduction in the size of the scar, on both Days 1 and 45. There was a significant (P < 0.05) increase in the RI of the ipsilateral uterine arteries from 0.65 on the first post-operative day to 0.83 after 7 days followed by a decrease to 0.71 on the 30th and 0.61 on the 45th post-operative day. LIMITATIONS, REASONS FOR CAUTION: This is a cohort investigation on a limited number of patients and it does not surgically compare LIM and 'classic' myomectomy in the scar US follow up. WIDER IMPLICATIONS OF THE FINDINGS: LIM avoided intraoperative bleeding and excessive tissue damage, as post-operative US follow up showed, with just two intra-myometrial hematomas (1.5%). The 2D US and Doppler velocimetry, a non-invasive safe method to check the myometrium after LIM, can detect post-operative hematoma and disechogenic, heterogeneous or ill-defined scar area, all unfavorable signs for myometrial scarring. Moreover, Doppler transvaginal monitoring, evaluating the pulsatility index (PI) and RI of the uterine arteries at their ascending branch, could identify patients with altered PI and RI parameters, possible markers of impaired wound healing.

Transabdominal wall deployment for instruments, lights, and micromotors using the concept of secured independent tools.

Use of secured independent tools (SIT) is changing the laparoscopy paradigm, which involves the use of instruments inside the abdominal cavity that are operated via a port that is larger in diameter than the instrument itself. However, in SIT instead of ports we used filaments or cables. Here we describe a modified SIT for use in the introduction of sutures or cables inside the peritoneum. Cables or sutures are passed through a tunnel made by an intravenous catheter and then exteriorized via a 12-mm port for tying, plugging (attaching), or connecting to different types of devices such as an endoscopic bulldog, alligator clamps, lights, and micromotors. These devices are introduced inside the abdomen and remotely operated with cables or filaments. The use of SIT is not limited to laparoscopy; it was successfully used in clinical experiences of single-port and single-incision laparoscopy and could facilitate natural orifice surgery. The technique offers a good force for traction, retraction, and mobilization. In addition, it has transmission capabilities for cameras and may facilitate the placement of wired microrobotics.

Safe introduction of ancillary trocars.

The problem of laparoscopic entry is currently still unsolved, and despite the various techniques adopted by the surgical community, it has not yet been determined which is the correct access in all patients. Add to this the problem of safe ancillary port introduction; all surgeons must avoid vascular and visceral damage. The 2 most common problems with second port trocars are inferior and superior epigastric artery damage, and bowel loops and adhesions. Over the years, we have developed 2 steps that are very useful to avoid iatrogenic injuries to vessels and viscera. In this brief report, we explain the following 2 simple steps, called by the authors "yellow island" port entry and second trocar "tip entry guided" by a suction cannula. In our practice of more than 3400 conventional laparoscopies, with data from patients with different characteristics, surgeons who have introduced laparoscopic surgery into their daily practice might teach these steps to young fellows and trainees.

Laparoscopy and natural orifice surgery: first entry safety surveillance step.

BACKGROUND AND OBJECTIVE: We are sharing information regarding the surveillance of the first entrance port in laparoscopic and natural orifice transvaginal endoscopy surgeries. However, we are not analyzing techniques or other surgical findings. METHOD: In this study, 160 women with previous abdominal pelvic surgeries underwent laparoscopic surgery, 145 patients underwent transvaginal Minilaparoscopy Assisted Natural Orifice Surgery (hybrid), and 3 patients underwent pure natural orifice transvaginal endoscopic surgery (pure). For those patients who had laparoscopy and hybrid procedures, the surveillance was from a laparoscope or gastroscope placed in a secondary port. Surveillance in pure cases was done using a gastroscopic retro view to see the pouch of Douglas. RESULTS: The laparoscopic procedures were gynecological procedures. The hybrid procedures included gynecological procedures as well as appendectomies and cholecystectomies; the pure procedures were cholecystectomies. There were a few minor vascular and bowel injuries in the laparoscopy group. There were no injuries in the transvaginal hybrid or pure procedures groups. CONCLUSION: The surveillance of the first entrance port can be an effective precautionary step. The cumulative experience suggests that using such surveillance in cases involving patients with prior surgery may assist in recognizing complications that might otherwise be missed.

A three-dimensional morphological reconstruction of uterine leiomyoma pseudocapsule vasculature by the Allen-Cahn mathematical model.

OBJECTIVE: To allow a morphological evaluation of pseudocapsule vasculature of uterine leiomyomas (ULs). DESIGN: Preliminary prospective study. SETTING: University-affiliated hospitals. PATIENTS: Ten women with symptomatic myomas warranting laparotomic hysterectomies. METHODS: Pseudocapsules of ULs were isolated from the surrounding myometrium, for a digital reconstruction of pseudocapsule vessels and analysis by three-dimensional structure applying the Allen-Cahn mathematical model. The images were converted in a matrix and an appropriate created software elaborated the images. The "nonlocal" Allen-Cahn mathematical model was applied to reduce the image noise and to regulate vessel outlines obtaining a "clean" image. MAIN OUTCOME MEASURES: The geometrical characteristics and morphology of vessel pseudocapsule network of ULs. RESULTS: The disarray in vascular architecture was evident from the absence of vessel parallelism and variable intervascular distances. An abnormal vascular branching of pseudocapsule was indicated by the different density of vessels per space and some vascular walls without interruption indicated vessel tortuosity. There were vascular spaces, which did not communicate with other vessels ("cul-de-sac" vessels). CONCLUSIONS: Pseudocapsule vasculature showed increase of tortuosity, disarray, abnormal branching and the presence of "cul-de-sac" vessels. Three-dimensional reconstruction of leiomyoma pseudocapsule vasculature network, despite the benign nature of ULs, showed geometrical characteristics of malignant neoplasm vessels.

Transvaginal single port cholecystectomy.

BACKGROUND: Transvaginal cholecystectomy encourages researchers to develop new hybrid or pure techniques for natural orifice surgery. We present an approach that combines flexible endoscopes, rigid instruments, and percutaneous needles. METHODS: A 26-year-old female patient with cholelithiasis underwent a single-port culdolaparoscopy cholecystectomy at "Hospital Regional Poza Rica" (Poza Rica, Mexico) on July 2008. The surgery was performed with only 1 transvaginal 16 mm in diameter by 32 cm in length port. The instruments included a gastroscope, laparoscopic 5 mm in diameter by 43 cm in length instruments, percutaneous reins, and hook needle. RESULTS: The patient was discharged 24 hours after surgery, which is customary for the hospital, without pain or visible scars. CONCLUSIONS: Single transvaginal port cholecystectomy using a gastroscope and laparoscopic 5 mm instruments in a parallel path is a feasible procedure in selected patients. This technique requires no abdominal ports assistance.

Laparoscopy rein and a backward needle entrance.

Since the awakening of single-port laparoscopy and culdolaparoscopy and with the increased interest in minilaparoscopy-assisted natural orifice surgery and pure natural orifice peritoneoscopy, laparoscopists are in pursuit of techniques with less percutaneous assistance. We made a rein using a 6-cm straight cutting edge needle in a 2-0 nylon suture with a large clip tied near the end as stoppage. We are also presenting an optional technique of placing the 6-cm straight needle backward, when the diameter of the cannula does not allow the parallel passage of the needle holder. The rein is simple, inexpensive, and easy to assemble, and may solve some problems of traction and triangulation without additional ports.

Secured independent tools in peritoneoscopy.

BACKGROUND AND OBJECTIVES: Secured independent tools are being introduced to aid in peritoneoscopy. We present a simple technique for anchoring instruments, powered lights, and micro machines through the abdominal wall. METHODS: We used a laparoscopic trainer, micro alligator clips with one or two 2-0 nylon tails and cables for engines and lights. The above instruments were introduced via a 12-mm or 15-mm port. Clips were placed for traction, retraction and exposure, lights for illumination, and motors for potential work. A laparoscopy port closure or suture passer was introduced percutaneously to grab and extract the tails or cables outside of the simulated abdominal cavity. The engines and lights were powered by a direct electric current (DC) plugged into exteriorized cables. RESULTS: We used 2 to 3 clips for each, and engines performed well. CONCLUSION: This basic simulation adds independent instruments, lights, and engines. We replaced cannulas with threads or cables in an attempt to limit the number of ports. This technique further opens the door for innovations in wired machines in laparoscopy, single-port laparoscopy, or natural orifice surgery.

Postoperative patient attitudes and perceptions of transvaginal cholecystectomy.

A survey was conducted in order to dispel misconceptions about natural orifice transvaginal cholecystectomy. Forty-two patients were surveyed after having undergone that procedure. Those patients were asked questions related to 1) patient satisfaction, 2) whether they would recommend the procedure to others, and 3) dyspaurenia. The survey was done after a sexual abstinence period that varied from 30 to 40 days. We encountered no complications, and all patients liked the procedure and would recommend it to family and friends. No patient developed dyspaurenia. The postoperative responses were unanimous and positive for all questions. The result of this postoperative transvaginal cholecystectomy survey will help patients and surgeons ease their fears and social taboos and better communicate, and this will help patients to become aware of the option of transvaginal peritoneoscopy.

Transvaginal cholecystectomy without abdominal ports.

BACKGROUND: Pioneers in natural orifice transvaginal cholecystectomy are in search of an approach that uses less percutaneous assistance. The approach must be safe and affordable. The authors present a successful cholecystectomy using a technique of transvaginal operative laparoscopy with no abdominal ports. METHODS: A 24-year-old female patient with gallbladder lithiasis underwent a natural orifice cholecystectomy with only one transvaginal 12-mm port, using a laparoscope with a working channel. We used laparoscopic instruments 5 mm in diameter by 43cm in length (including a needle holder, Maryland dissector clamp, spatula, hook, suction cannula, and clip applier) and assistance with percutaneous marionette leashes. RESULTS: The patient stayed in the hospital for 24 hours and was discharged without pain and without scars. CONCLUSION: Transvaginal cholecystectomy performed using an operative laparoscope with a working channel is possible in select cases. This technique requires no abdominal ports and is an alternative to culdolaparoscopy or hybrid transvaginal procedures with flexible endoscopes.

Minilaparoscopy-assisted natural orifice surgery.

BACKGROUND AND OBJECTIVES: New technology has allowed us to perform major abdominal and pelvic surgeries with increasingly smaller instruments. The ultimate goal is surgery with no visible scars. Until current technical limitations are overcome, minilaparoscopy-assisted natural orifice surgery (MANOS) provides a solution. The aim of this study was to examine our clinical and experimental experience with MANOS. METHOD: Minilaparoscopic abdominal instruments were used together with a large vaginal port, which was used for insufflation, visual purposes, introduction of operative instruments, and specimen extraction. Minilaparoscopy-assisted intraperitoneal transgastric appendectomy was done in simulators (Lap trainer with SimuVision, Simulab Corp., Seattle, WA). RESULTS: Since 1998, we have used this technique in 100 cases including ovarian cystectomies, oophorectomies, salpingo-oophorectomies, myomectomies, appendectomies, and cholecystectomies. Some oophorectomies were performed after vaginal hysterectomy in cases where vaginal extraction was not possible. In this case series, we had only one complication, a case of postoperative fever after an ovarian cystectomy, which was diagnosed as drug-related fever. Our limited simulator experience showed that MANOS is a feasible technique for performing transgastric appendectomies. CONCLUSION: It may take several years for natural orifice surgery to become standard care. Meanwhile, MANOS could encourage and expedite this process.

Culdolaparoscopic cholecystectomy during vaginal hysterectomy.

BACKGROUND: Exploration of the abdominal cavity is routinely performed during abdominal and laparoscopic hysterectomies. The visualization of the abdomen during vaginal hysterectomy, however, is not usually done. During a vaginal hysterectomy, after the uterus is removed, an opening is present in the cul-de-sac, which offers a unique opportunity for the performance of not only exploratory but also concomitant surgeries, such as a cholecystectomy. METHOD: Culdolaparascopy is a culdoscopy assisted laparoscopic technique that utilizes a 12-mm trocar in the vagina as a multifunctional port in conjunction with laparoscopy and minilaparoscopy. A cholecystectomy was performed utilizing the vaginal trocar as an insufflation, visual, and extracting port during a vaginal hysterectomy. CONCLUSION: Culdolaparoscopy, when performed during vaginal hysterectomy, can be used for exploration and operation in the abdominal cavity. This case report illustrates the feasibility of a cholecystectomy performed using this surgical concept.

Culdolaparoscopic oophorectomy with vaginal hysterectomy: an optional minimal-access surgical technique.

BACKGROUND AND PURPOSE: Oophorectomy during vaginal hysterectomy may be difficult or impossible when the ovaries lie high in the pelvis or when adhesions are present. A new technique of culdolaparoscopic oophorectomy during vaginal hysterectomy is described. PATIENTS AND METHODS: After the uterus is removed, a 12-mm cannula is introduced into the culde-sac, and a pneumoperitoneum is created. A 10-mm telescope is inserted through the vaginal port, and, under culdoscopic surveillance, two or three 3-mm abdominal ports are placed. The 10-mm telescope is removed, and a minilaparoscope is introduced through one of the abdominal cannulas. Oophorectomy is performed with a coagulator and scissors introduced via the vaginal port, and the ovaries are extracted through the vaginal cannula. Eight patients with pelvic adhesions found at the time of vaginal hysterectomy underwent culdolaparoscopic oophorectomy. RESULTS: The procedure lasted between 28 minutes and 45 minutes, including adhesiolysis, removal of an enlarged ovary, and a liver biopsy. No complications occurred in any of the patients. CONCLUSION: Culdolaparoscopic oophorectomy is a simple minimal-access surgical technique for removing the ovaries when these are not easily accessible at vaginal hysterectomy.