Objective To analyze the clinical effects of procedure for prolapse and hemorrhoids combined with external hemorrhoidectomy in the treatment of mixed hemorrhoid. Methods Clinical data of 108 patients with mix hemorrhoid who were admitted to our hospital from January 2012 to January 2014 were retrospectively analyzed. The 108 patients were assigned to an observation group and a control group according to the surgical procedures. 54 patients in the ob-servation group received procedure for prolapse and hemorrhoids combined with external hemorrhoidectomy, and 54 pa-tients in the control group received the conventional Milligan-Morgan operation. Each clinical index, pain conditions within 3 days after surgery and complications within 6 months after the surgery in the two groups were compared. Re-sults Surgery time, amount of bleeding during surgery, hospitalization time, and hospitalization expenses in the observa-tion group were all significantly better than those in the control group, and the differences were statistically significant (P<0.05). Pain scores in 24 h, 48 h, and 72 h after the surgery in the observation group were significantly lower than those in the control group, and the differences were statistically significant (P<0.05). In 24 h, 48 h and 72 h after the surgery, patients in the observation group had suffered less pain than those in the control group. Except for one of the patients who had complications before the surgery, total incidence of complications within 6 months after the surgery in the observation group was 18.51%, significantly lower than that of 81.50% in the control group, and the difference was statistically significant(P<0.05). Conclusion The procedure for prolapse and hemorrhoids combined with external hemor-rhoidectomy in the treatment of mix hemorrhoid has favorable effects of lower pain degree and less incidence of com-plications, and the combined procedure is suitable to be further promoted and applied clinically.

Pancreaticoduodenectomy is one of the most difficult abdominal operations, and the difficulty in resection and complicated digestive tract reconstruction have brought great challenges for surgeons. At present, laparoscopic pancreaticoduodenectomy has been widely used in clinical practice, and compared with traditional 2D laparoscopy, 3D laparoscopy has the features of high magnification, high definition, and three-dimensional vision, which enables surgeons to see more clearly and operate more accurately, and thus it has great potential to be widely used in pancreaticoduodenectomy.

【Objective】 To investigate the frequency of P1PK and GLOB blood group in Chinese Lahu population and their genetic status, so as to provide data support for the safety of blood transfusion and give advice and transfusion guidance for pregnant women. 【Methods】 Unrelated individuals of Chinese Lahu population were randomly selected for serological identification of P1PK and P blood group and gene sequencing analysis. The frequency of P1PK and GLOB blood group were analyzed. 【Results】 Six cases of anti-PP 1P^k(formerly known as anti-Tj^a) negative blood type were identified as the rare P1-PK-P- blood type (formerly known as Tj^a- blood type or p blood type, hereinafter referred to as p blood group) from 300 Lahu population, with phenotypic frequency of p blood group in P1PK and GLOB blood group system in Lahu population at 2.0%(6/300). 【Conclusion】 The phenotypic frequency of blood group p in Lahu population was significantly higher than that in Europe (5.8 persons per million) and Hong Kong, China (1 person per million),indicating significant ethnic specificity and regional ethnic differences.

【Objective】 To understand the distribution and gene frequency of main red blood cell blood groups in Lahu ethnic minority and analyze the genetic characteristics of Lahu people. 【Methods】 1) ABO forward and reverse typing had been performed by microplate method; 2) Rh, MN, H, P1Pk and Mur antigen were tested by the tube method. If the ABO forward and reverse typing were incompatible, the tube method was used for confirmation. 【Results】 The distribution characteristics of blood group and gene frequency in Lahu ethnic minority were as follows: B>O>A>AB for ABO, with genotype frequency as p 11.1%, q 27.5% and r 61.4%; the frequency of Rh genotype was CDe 83.3%, cDE 12.0%, cDe 2.42%, CDE 2.32%, CdE 0%, Cde 0%, cdE 0% and cde 0%; M > MN>N for MN blood group, with genotype frequency as M 75.26% and N 24.74%; P1

Clinical data of 12 patients with gastric cancer, in whom the Roux and Y space hernia developed after gastrectomy with Roux-en-Y anastomosis in our hospital from June 2010 to December 2018, were retrospectively analyzed. The clinical symptoms of patients were abdominal pain, distension and ileus. The main CT findings were torsion of mesentery with whirlpool sign, intestinal obstruction and exudants around the small bowels. During the operation it was found that small bowels herniated into the Roux and Y space in all 12 patients, the necrotic small intestines were resected in 4 patients. Ten patients were recovered, and 2 died. No recurrence was observed in all 10 patients during 3 month-follow up. The postoperative Roux and Y space hernia is a internal hernia and difficult to be diagnosed. The CT scan is valuable for diagnosis of Roux and Y space hernia; the main CT signs were swirled appearance of mesentery and small bowel obstruction. Once diagnosis is made the emergency operation is necessary.