• Journal of Chest Surgery
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• 제2권2호
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• pp.167-167
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• 1969

Two groups of esophagus graft were done in canine esophagus in 34 adult mongrel dogs. For the first group segmental replacement graft was done with fresh autologous pericardium tube, and for the second, patch graft was done utilizing fresh autologous pericardium, fresh homologous pericardium,and dacron piece. All eight dogs in the first segmental replacement graft group died 2 to 5 days after operation with severe empyema caused by anastomosis disruption. Among 26 patch graft dogs 2 died during operation and 7 died 13 to 18 days after operation. For the 17 long-term patch grafted survivors esophagography and postoperative weight check were done. Postoperative stool was collected and examined for dacron patch excretion. One, two, three, and four months postoperative long-term survivors were sacrificed to obtain specimens in each group respectively and the following observations were made.I. Survival; Autologous pericardium patch group showed no mortality but in homologous pericardium and dacron patch group only two thirds were long-term survivors. II. Postoperative swallowing; There was no case which demonstrated postoperative dysphagia. About half of the cases showed postoperative weight increase and in only 3 cases weight decrease followed operation. III. Dacron patch was excreted in the stool 8 to 23 days after operation. Animals which excreted dacron patch up to 9 days after operation all died of empyema due to anastomosis disruption.IV. Postoperative esophagogram; All esophagograms in each group showed no leakage of barium, no passage disturbances and no remarkable stenotic signs.V. Morphological findings; [A] Macroscopical findings; In one month group specimens of each group dense adhesion with surrounding structures was noted and luminal surface was smooth with contraction of the patched area. In two month groups anastomosis sutures were still exposed but patched area showed lesser abnormality. In three to four months groups sutures were covered completely and patched area showed only very slight signs of contraction. [B] Microscopic findings; In one month group luminal surface of the replaced tissue [transplanted tissue] showed almost complete epithelial covering that is composed of several layers of squamous cells with no evidence of keratinization. Basement membrane was also well distinct throughout. Slight to minimal inflammatory cells comprising of large mononuclears, lymphocytes and plasma cells were observed in the subepithelial fibrous stroma consisted entirely of loose fibrous tissue containing many newly formed capillaries and fibroblastic proliferation. Scattered suture granulomas were found, few of which became acutely inflamed. In two months group repairing process progressed with lesser degree of inflammatory cell infiltration and young capillary proliferation. Fibrous tissue was more matured showing even focal collagenization.Suture granuloma persisted but with lesser reactive changes. Epithelial covering was that of a mature non-keratinizing stratified squamous epithelium. In three and four months groups the replaced area showed essentially similar histological findings. However, subepithelial stroma still consisted entirely of connective tissue without evidence of smooth muscle regeneration. In this group, inflammatory cell infiltration was minimal or negligible. Among these patch materials autologous pericardium group showed the most satisfactory repairing process.The above mentioned results may signify the feasibility of autogenous pericardium patch graft in clinical esophageal surgery.

• Journal of Chest Surgery
• /
• 제2권2호
• /
• pp.168-186
• /
• 1969

Two groups of esophagus graft were done in canine esophagus in 34 adult mongrel dogs. For the first group segmental replacement graft was done with fresh autologous pericardium tube, and for the second, patch graft was done utilizing fresh autologous pericardium, fresh homologous pericardium,and dacron piece. All eight dogs in the first segmental replacement graft group died 2 to 5 days after operation with severe empyema caused by anastomosis disruption. Among 26 patch graft dogs 2 died during operation and 7 died 13 to 18 days after operation. For the 17 long-term patch grafted survivors esophagography and postoperative weight check were done. Postoperative stool was collected and examined for dacron patch excretion. One, two, three, and four months postoperative long-term survivors were sacrificed to obtain specimens in each group respectively and the following observations were made. I. Survival; Autologous pericardium patch group showed no mortality but in homologous pericardium and dacron patch group only two thirds were long-term survivors. II. Postoperative swallowing; There was no case which demonstrated postoperative dysphagia. About half of the cases showed postoperative weight increase and in only 3 cases weight decrease followed operation. III. Dacron patch was excreted in the stool 8 to 23 days after operation. Animals which excreted dacron patch up to 9 days after operation all died of empyema due to anastomosis disruption. IV. Postoperative esophagogram; All esophagograms in each group showed no leakage of barium, no passage disturbances and no remarkable stenotic signs. V. Morphological findings; [A] Macroscopical findings; In one month group specimens of each group dense adhesion with surrounding structures was noted and luminal surface was smooth with contraction of the patched area. In two month groups anastomosis sutures were still exposed but patched area showed lesser abnormality. In three to four months groups sutures were covered completely and patched area showed only very slight signs of contraction. [B] Microscopic findings; In one month group luminal surface of the replaced tissue [transplanted tissue] showed almost complete epithelial covering that is composed of several layers of squamous cells with no evidence of keratinization. Basement membrane was also well distinct throughout. Slight to minimal inflammatory cells comprising of large mononuclears, lymphocytes and plasma cells were observed in the subepithelial fibrous stroma consisted entirely of loose fibrous tissue containing many newly formed capillaries and fibroblastic proliferation. Scattered suture granulomas were found, few of which became acutely inflamed. In two months group repairing process progressed with lesser degree of inflammatory cell infiltration and young capillary proliferation. Fibrous tissue was more matured showing even focal collagenization. Suture granuloma persisted but with lesser reactive changes. Epithelial covering was that of a mature non-keratinizing stratified squamous epithelium. In three and four months groups the replaced area showed essentially similar histological findings. However, subepithelial stroma still consisted entirely of connective tissue without evidence of smooth muscle regeneration. In this group, inflammatory cell infiltration was minimal or negligible. Among these patch materials autologous pericardium group showed the most satisfactory repairing process. The above mentioned results may signify the feasibility of autogenous pericardium patch graft in clinical esophageal surgery.

• Journal of Chest Surgery
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• 제32권9호
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• pp.799-805
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• 1999

배경: 식도 및 분문부암에서 식도절제를 시행한 후 문합부에 생길 수 있는 중대한 합병증으로는 문합부 누출, 양성 협착, 그리고 종양재발 등을 들 수 있고 이러한 술후 합병증의 발생 빈도는 그 문합의 위치가 경부 또는 흉부 어디인가에 따라 달라질 수 있으므로 문합의 위치에 따른 합병증을 서로 비교할 필요가 있다. 대상 및 방법: 1987년부터 1998년까지 식도암 근치술을 시행 받은 36명의 환자를 대상으로 흉부절개에 의한 식도절제 후 그 문합 위치에 따라 경부 문합군(NA군, 20명) 및 흉부 문합군(C군, 16명)으로 각각 구분하여 비교하였다. 식도암환자의 병기는 2A기 13명, 2B기 7명, 3기 16명으로 술후 각각 판정되었고, 종양의 위치별로는 중흉부에 22명, 하흉부 및 분문부에 14명이 각각 위치하였다. 결과: 전체 수술사망률은 8.3%(경부 문합군 5%, 흉부 문합군 12.5%)였다. 문합부 누출율은 경부 문합군 15.0%, 흉부 문합군 12.5%으로 문합위치에 따른 차이는 없었으나, 문합 방법상 수봉합(27.3%)과 staple봉합(8.0%)에 따른 차이는 있었다(p＜0.05). 종양으로부터 근위부 절제연은 평균 9.6 cm(경부문합군) 및 5.8 cm(흉부문합군)였고, 문합부 종양 재발율은 5.3%(경부문합군) 및 28.6%(흉부문합군) (p＜0.05)였다. 양성 협착률-중등도 이상의 연하장해로 정의함-은 흉부문합군(21.4%)에 비해 경부문합군 (36.8%)에서 보다 높게 나타났고, 특히 staple봉합법에 의한 문합시에는 staple의 크기가 작을수록 협착의 빈도는 높았다(25-mm staple에서 41.7%, 28-mm에서 9.1%) (p＜0.05). 결론: 근위부 절제연을 크게 할수록 문합부의 종양 재발율을 줄일 수 있었고 staple봉합의 도입후 문합부 누출율은 크게 감소하였다. 양성 협착률은 경부 문합후 상대적으로 높았지만 작은(25-mm) sstaple이 사용과 술후 문합부 누출의 합병이 중등도 이상의 협착의 더욱 큰 위험 요소라고 사료된다.