The live tissue welding peculiarities and efficiency at surgical proceeding and local control achievement during the locally advanced colon cancer treatment

Abstract

The aim of the work: to determine the peculiarities and efficiency of the live tissue electric welding technology applying for surgical proceeding and local control achieving during the advanced colon cancer treatment.

Materials and Methods. In 57 patients, welding mobilization and/or anastomosis was performed during surgical interventions, radical or palliative. Inclusion criteria were adenocarcinoma, T3-4, N+, it’s abscessing. The electric welding clinical devices EK-300M1 and Patonmed EKVZ-300 (Ukraine) were used, equipped with special instruments. The features of the resection line, healing and anastomotic function were researched, and the appearance of local tumor recurrence was observed up to 10 years after the surgery. The average patients age was (68.3±8.4) years.

Results and Discussion. Electro-welded intestinal anastomoses were made by multi-point (7) and one-stage (8) methods, sutured (42) – by single stitches. Electric welding mobilization took place along the narrow line of current passing, in the planned by surgeon tissues, had not affected by the tumor, regardless of their density and inflammatory changes, at dry operation field because of simultaneous welding hemostasis. The sealing of the lymph nodes capsule and simultaneous closing of lymphatic vessels were occurred. Right orienting of electric current by a surgeon facilitated plane mobilization of specimen. Along with the division, the coagulation pseudocapsule was formed along separated tissue edges. It was possible to mobilize the tumor and infected tissues in case of decay, without violation of the abscess walls integrity. The detection and skeletonizing of organ vessels for their central overlap, which was closed by welding, without imposing a ligature, was provided.

Characteristics of electric welding resulted in a slight exudation by drainage, which gave the possibility of reliable control of leakage and anastomotic tightness. Any leakage of electric welding anastomosis was observed, but in sutured one leakage was found in 2 (4.8 %) as grade ІІІ, in 6 (14.3%) grade І or ІІ. The stool, respectively, was observed through (1.9±0.3) days, and (2.6±0.3) days.

For 2 years there were observed 12 patients having electric weld anastomosis, for 3 years – 8.5 years – 3 patients, 10 years – 1 patient. Having suture anastomosis were observed for 2 years 34 patients, for 3 years – 20.5 years – 9 patients, 10 years – 3 patients.

According to the endoscopic and radiological studies, the line of electro-welded colon connection was difficult to identify. The threads migration from sutured anastomosis line was observed up to 6 months.

None of the observable patients in either groups revealed clinical, endoscopic or tomography signs of local tumor recurrence: external deformity of anastomosis or new tumor growth at the site of its removal.

The electric welding usage provides an opportunity to achieve tumor removal within R0, in volume D2 and CME. Coagulation of the lymph nodes capsule and their vessels contributes to ablasty during lymphadenectomy. Coagulation pseudocapsule, beside oncological reason, could provide a reduction of postoperative complications number, even in the case of abscess removing or anastomotic dehicience, that might be an important survival background. The vascular closage line properties, made by welding, provides the secondary bleeding prevention in such case.