Objective To explore the clinical value and experience of ultrasound guided combined with laparoscopic microwave ablation in treatment for special site liver cancer．Methods The clinical data of 9 patients with liver cancer treated by ultrasound guided combined with laparoscopic microwave ablation in our hospital from February 2008 to October 2010 were analyzed retrospectively．Results There were 6 cases of primary liver cancer， 3 cases of metastatic hepatic carcinoma. Eight cases of multiple tumors， 1 case of single tumor．There were one or more lesions invading liver capsular，a total of 13 lesions in all the patients． Among them，6 lesions located in diaphragm， 3 closed to bowel， 2 neared stomach，1 located in gallbladder bed and 1 in hilar．No serious complications and no death happened during operation．The following-up time was （9.2±4.7） months （4 to 18 months）， there were 2 lesions of part residual， including 1 case of microwave ablation again，1 case of percutaneous ethanol ablation， and 11 lesions of complete ablation （84.6%，11/13） 1 month after operation by CT examination．Four cases recurred 3 months after operation by CT examination， including 2 cases of microwave ablation again，1 case of percutaneous ethanol ablation，1 patient with pulmonary metastasis and giving up treatment，1 patient with poor liver function and died of liver failure 6 months after operation；1 patient with multiple lesions died of brain metastases 10 months after operation； the rest were still alive．Conclusions Ultrasound guided combined with laparoscopic microwave ablation is a safe and effective method in the treatment for special site liver cancer，the curative effect is good and worth of spread．
目的 探讨孤立性纤维性肿瘤的诊断及外科治疗方法。方法 回顾我院10年来经手术切除并行病理检查确诊为孤立性纤维性肿瘤的病例资料，就其诊断和外科治疗方法进行总结与分析。结果 共16例次患者，肿瘤分别位于胸腔、腹股沟、后腹膜、外阴、颈部、下肢等部位，无明显特异的临床症状。所有病例均行手术完全切除肿瘤，术后经病理学检查和免疫组化染色检查确诊。对患者定期随访，其中2例分别于术后5年和7年肿瘤复发，2例分别随访3年和5年后失访，2例患者分别于随访的第9个月和16个月因全身多发转移死亡，其余患者仍在随访中。结论 孤立性纤维性肿瘤大多数病例表现为局部缓慢生长的无痛性肿块，无明显的临床症状，术前诊断较困难，目前仅能依靠术后免疫组化检查确诊，手术切除是最佳的治疗方法。
目的 探讨胰腺囊性肿瘤的诊断及外科治疗方法。方法 对我院2003年4月至2012年4月期间收治的19例胰腺囊性肿瘤患者的临床资料进行回顾性分析。结果 本组19例患者中浆液性囊腺瘤8例，黏液性囊腺瘤5例，导管内乳头状黏液瘤4例，实性假乳头状瘤1例，囊腺癌1例。行B超或CT发现胰腺占位病变。位于胰头部5例，胰体部8例，胰尾部6例。行肿瘤摘除术4例，保留脾脏的胰体尾切除术5例，胰体尾＋脾脏切除手术3例，胰十二指肠切除术6例，1例囊腺癌患者因肝脏转移伴腹腔广泛转移、侵犯大血管而肿瘤不能切除仅行胃空肠、胆肠吻合。术后发生胰瘘2例，腹腔感染1例，经保守治疗后康复出院。无围手术期死亡病例。19例患者均进行了随访，随访时间6～80个月，平均45.2个月。1例囊腺癌合并肝脏转移患者于术后7个月死亡，其余良性肿瘤患者均未见复发，最长已存活5年。结论 胰腺囊性肿瘤主要靠影像学检查发现，手术切除是理想的治疗方法，选择合适的术式有助于避免术后并发症的发生和改善预后。
目的 探讨肝癌合并低血糖的诊断及治疗。方法 对中国医科大学附属第四医院2010年1月至2013年4月期间收治的27例肝癌伴低血糖患者的临床资料进行回顾性分析。结果 27例患者中转移性肝癌2例，原发性肝癌25例；其中伴肝硬变9例。所有患者均给予护肝、补充能量治疗；22例行手术治疗后血糖全部控制在正常或仅轻度升高，5例因肿瘤无法切除而放弃手术治疗，其中1例伴肝硬变肝癌患者2个月后再次低血糖症状发作后死亡。结论 低血糖是肝癌少见的并发症，早期诊断及治疗有助于避免后遗症的发生并改善预后。
ObjectiveTo investigate the proportion of peripheral blood CD4+CD25+ regulatory T cells (Tregs) in patients with pancreatic head carcinoma, the dynamic changes of these cells before and after pancreatoduodenectomy were also analyzed. MethodsThe proportions of peripheral blood CD4+CD25+ Tregs in patients with pancreatic head carcinoma and normal individuals were examined by using flow cytometric analysis. The CD4+/CD8+ ratio was also studied before and after operation. ResultsThe patients with pancreatic head carcinoma showed higher ratio of CD4+CD25+ and CD4+CD25high Tregs compared with normal control before operation (Plt;0.05). However, the percentage of these T cells reduced significantly after pancreatoduodenectomy, which was most obviously on the 3rd day after operation (Plt;0.01, Plt;0.05). After operation, CA199 level began to decrease, which was obvious on the fourteen day after operation. This tendency of CD4+CD25high Tregs changes was similar to that of CA199. The patients showed an decreased ratios of CD4+/CD8+ compared with normal controls, which further declined after operation, and reached the lowest point on the seventh day after operation (Plt;0.05). ConclusionsPancreatoduodenectomy may be helpful for the recovery of antitumor immunity. The perioperative period of patients with pancreatic head carcinoma may be a beneficial windowphase for immune intervention and Tregs may be served as target cells.
ObjectiveTo approach the role of CD4+CD25+ regulatory T cells in the maintenance of immunotolerance in mouse liver allograft. MethodsThe mouse orthotopic liver transplantation was performed. After the liver transplantation immunotolerance induction, antiCD25 monoclonal antibody (PC61) was injected into the recipients with a delayed timing to remove the CD4+CD25+ T cells. The percentage of CD4+CD25+ T cells and the expression of forkhead/winged helix transcription factor (Foxp3) in the recipients were examined. Furthermore, the survival time of the recipient was observed. ResultsC3H/HeJ recipients receiving DBA/2 hepatic allografts survived over 70 d as in the syngeneic liver transplantation (C3H/HeJ recipients receiving C3H/HeJ hepatic grafts). With various protocols of the delayed PC61 treatment, the CD4+CD25+ T cell was completely disappeared as observed. However, the removal of CD4+CD25+ regulatory T cells after the induction of transplantation immunotolerance did not affect the survival of hepatic allografts. ConclusionCD4+CD25+ regulatory T cells are not essential for the maintenance of spontaneous mouse liver transplantation immunotolerance.
Objective To establish a modified mouse abdominal heterotopic heart transplantation model in order to increase the graft survival rate and reduce operative complications. Methods The heart was transplanted into the abdomen by anastomosing the donor ascending aorta and pulmonary artery to the recipient abdominal aorta and infrahepatic vena cava respectively. Hilar tissue was not alone ligated, meanwhile recipient lumbar vein was not ligated. Recipient abdominal aorta and infrahepatic vena cava were not isolated, but were liberated and obstructed simultaneously. Results Two hundred and twenty-nine formal transplantations were performed with the successful rate of 97.82% (224/229). The syngeneic graft survival time was more than 6 months. Complications: Aorta thrombus was found in 2 mice (0.87%), inferior vena cava thrombus in 1 mouse (0.44%), heart torsion in 4 mice (1.75%), hemorrhage in 4 mice (1.75%), crural paralysis in 2 mice (0.87%), intestinal obstruction in 1 mouse (0.44%), and no anesthetic accident happened. Conclusions The meliorated mouse abdominal heterotopic heart transplantation model is simple and reliable, which can reduce the operation time. Thus, the meliorated method provides a useful technique for immunologic transplantation research.