Open Right Colectomy (Right Hemicolectomy) Technique
- Author: Ashwin Pai, MBBS; Chief Editor: Kurt E Roberts, MD more...
Clinicians should adhere to the following basic principles in colon resection:
Prepare the patient properly before the operation
Perform thorough bowel preparation preoperatively
Plan the incisions so as to yield optimal exposure
Use Turnbull's no-touch technique when possible
Completely mobilize the segment to be resected so that the surgeon can obtain good clearance as well as accomplish a tension-free anastomosis
Achieve adequate cancer clearance both in the resected margins and in the lymphatic fields
Ensure an adequate blood supply to the segments involved in the anastomosis
An end-to-end anastomosis is preferred to a side-to-side or end-to-side anastomosis; the surgeon may use interrupted fine silk sutures in one or two layers or may use anastomotic staplers
Achieve good and secure abdominal closure to facilitate early ambulation
Laparoscopic versus open technique
Tong et al compared laparoscopic and open right hemicolectomy (77 laparoscopic, 105 open). They compared results based on various variables, including time taken for surgery and duration of hospital stay. Mean operating time was shorter for the open procedure (115.4 min). Seven laparoscopic cases (9%) required a conversion to an open procedure. There was no difference in complications. Normal diet was started in the laparoscopic patients a day earlier than the open procedure. The median hospital stay was longer for open surgery (7 days) than for laparoscopic surgery (6 days). In the converted-to-open group, hospital stay was significantly longer (9 days).
Siani Let al studied laparoscopic versus open right hemicolectomy for oncologic clearance over 5 years. Twenty patients with nonmetastatic, noninfiltrating right colonic cancer who were treated with laparoscopic right hemicolectomy were compared with a well-matched group who underwent open right hemicolectomy. There was no statistically significant difference in the cumulative results other than the duration of surgery, which was longer in laparoscopic surgery. The authors concluded that laparoscopic right hemicolectomy was safe and oncologically adequate as compared with open right hemicolectomy. Further randomized controlled trials are needed to further elucidate its role in right-colon cancer.
Open Right Hemicolectomy
Choice of incision
The choice of incision varies based on the circumstances of the case (eg, the underlying pathology, the extent of the disease, and previous operations). A midline incision is advantageous because it is easily extended to expose any area. This incision is preferred for patients with inflammatory bowel disease, because such patients may need frequent operations. A right paramedian incision (see the image below) provides good exposure and is suitable for planned right hemicolectomies.
Determination of extent of resection
The location of the tumor determines the line of resection. If the tumor is in the cecum, a 10-cm margin of terminal ileum must be resected; however, if the tumor is in the ascending colon, only a few centimeters of ileum is required as a margin. The line of resection should extend to the right side of the transverse colon at the level of the right branch of the middle colic vessels (see the images below).
Take care to preserve the main branch of the middle colic vessels. To ensure proper lymph node harvesting, the right colic and ileocolic vessels are taken at their origins. Omental attachments to the right colon are generally removed with the specimen.
Mobilization of colon
The right colon is mobilized (see the image below) by separating the terminal ileum and cecum from the retroperitoneal structures. The ureter and the gonadal vessels are the most important of these. Separation is accomplished by incising the peritoneal attachments to these structures laterally and rotating the cecum anteriorly and medially.
When this mobilization is completed, the attachments to the cecum and terminal small bowel are incised in an inferior-to-superior direction toward the junction of the third and fourth portions of the duodenum. A sponge is often helpful in gently separating the filmy adhesions to the retroperitoneum posteriorly as mobilization continues superiorly.
During this dissection, take proper care to identify and posteriorly displace the gonadal vessels and ureter. Mobilization of the ileocolic vessels is complete once the middle colic artery is identified where it crosses the duodenum.
The lateral dissection is continued upward and around the hepatic flexure with the surgeon's index finger; this provides the plane of dissection for cauterization by the first assistant. The exposure of the hepatic flexure is completed with the midtransverse colon retracted inferiorly. The thin plane between the mesocolon and the gastrocolic ligament can be developed bluntly and dissected to complete the flexure mobilization (see the image below). During the mobilization of the gastrocolic ligament, a few vessels may have to be ligated.
Apply gentle traction to the transverse mesocolon to mobilize the proximal part of the transverse colon. Perform this maneuver with a gentle touch to avoid avulsing a branch of the middle colic vein from its origin. Then retract the right colon superiorly and medially to expose the anterior edge of the duodenum and the head of the pancreas (see the image below). Release of these filmy attachments is the last remaining step in the dissection.
Incise the avascular area between the ileocolic artery and right branch of the middle colic artery to the base of the ileocolic vessels at about the level where it crosses the lateral or inferior edge of the duodenum. Incise the peritoneum overlying the ileocolic vessel, and doubly ligate and divide the vessels.
Next, the marginal branches to the ileum are divided, thus preparing the proximal line of resection. Divide the right colic artery, if necessary, and the right branch of the middle colic artery. The distal bowel margin is then cleared of fat and prepared for an anastomosis.
Creation of anastomosis
The anastomosis may be created either with a stapler or by means of a hand-sewn technique.
A conventional stapled functional end-to-end anastomosis is accomplished with one or two firings of a linear cutting stapler and the use of a linear noncutting stapler. However, the current standard technique is a simplified procedure that uses only two firings of a disposable linear cutting stapler.
Clear away mesenteric fat around the colon and the terminal ileum for approximately 1.5 cm. Make a transverse incisions about 1.5 cm long on the specimen side of these cleared areas on the antimesenteric borders of the ileum and colon. One of the two sides of the linear cutting stapler is placed into each of the holes, first in the small bowel and then in the colon. Gently close the stapler, approximating the small bowel and the colon along the antimesenteric border. Once the stapler is in a good position, fire it and remove it.
When the stapler is fired, the previously separate ileal and colonic enterotomies are joined into a single enterotomy; use a pair of Babcock clamps to grasp opposite borders of this enterotomy at the anterior and posterior staple lines. A long (75-100 mm) linear cutting stapler is reloaded and placed across the ileum and transverse colon at a right angle to the previous staple line. With retraction of the previous enterotomy, the stapler is fired, completing the surgical resection and anastomosis.
The mesenteric defect can be closed or left open, depending on the surgeon's preference. If available, the omentum can be placed over the anastomosis to provide further protection against postoperative anastomotic leakage.
The hand–sewn anastomosis most often performed begins by placing crushing bowel clamps across the colon a few centimeters distal to the area to be divided on the ileum and a few centimeters proximal to the line of transection on the colon. Place noncrushing clamps straight across the colon and ileum. At this point, the ileum and colon are divided, and the specimen is sent for pathologic evaluation. If the diameter of the transected ileum is small, it can be enlarged by dividing it longitudinally along its antimesenteric border.
Three types of anastomosis can be created, as follows:
First, the two ends of the bowel are approximated, with care taken to ensure that no twists exist. To aid in approximation, place 3-0 stay sutures in the corners of the bowel. Place a posterior row of Lembert sutures first. Place these sutures deep enough to incorporate most of the muscle layer. If the suture can be seen through the serosa, the stitch has been placed too superficially, and a deep needle passage is required. The sutures are tied so as to approximate tissues, not strangle them.
Next, an inner layer of continuous 3-0 suture is used to approximate the mucosal and submucosal layers. The corner of the bowel is secured first, and the continuous suture is then advanced along the posterior aspect of the anastomosis. This suture is tied to itself at the corner.
The occluding bowel clamps are removed from the bowel to allow blood flow to return to the ends of the bowel. The final step includes the anterior second layer of 3-0 Lembert sutures, which approximate the serosal layer and thus bolster the anastomotic line (see the images below).
Completion and closure
Before closure, check the abdomen for adequate hemostasis and thoroughly irrigate it with saline. Drains are used only for infection or abscess. Use interrupted or continuous sutures to close the fascial layer, and a continuous subcuticular suture or skin staples are used to approximate the skin.
Complications of open right hemicolectomy include the following:
Wound infection 
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