Objective To evaluate the outcome of pedicle graft of greater omentum and polypropylene mesh in reconstruction of large defect of abdominal wall caused by surgical incision. Methods From 1994 to 2004, 12 cases of large abdominal wall defects were repaired with pedicle graft of greater omentum and polypropylene mesh after removal of abdominal wall tumor; the defect sizes of abdominal wall ranged from 10 cm×7 cm to 25 cm×17 cm. Results The abdominal wall wound in 12 cases were healed by first intention. After a follow-up of 1 to 5 years, no complications of abdominal hernia, infection and intestine obstruction occurred in all patients. Conclusion It is reliable to repair abdominal wall defect caused by surgical incision with pedicle graft of greater omentum and polypropylene mesh instead of peritoneum.
Objective To explore an effect of the artificial nerve graft wrapped in the pedicled greater omentum on the early revascularization and an effectof the increased blood supply to the artificial nerve graft on the nerve regeneration. Methods Seventy-five rabbits were randomized into 3 groups, in which there were 2 experimental groups where the rabbits were made to abridge respectively with the artificial nerve grafts wrapped in the pedicled greater omentum (Group A) and with the artificial nerve grafts only (Group B), and the control group where the rabbits were abridged with the autologous nerve (Group C).On the 3rd, 7th and 14th days after operation, the evans blue bound to albumin (EBA) was injected into the vessels in all the grafts to show their revascularization. Twelve weeks after operation the nerve regeneration was evaluated with theelectrophysiological and histological observations on the serial sections, and was evaluated also with the transmission electron microscope. Results The artificial nerve grafts wrapped in the pedicled greater omentum in Group A and the autologous nerve grafts in Group C showed a beginning of revascularization on the3rd day after operation, and the revascularization was increased on the 7th and14th days. Compared with Groups A and C, the artificial nerve grafts in Group Bshowed a delayed revascularization on the7th day after operation. At 12 weeks after operation, there were no significant differences in the motor never conduction velocity, density of the regenerated myelinated nerve fibers, myelin sheath thickness, and diameter between Group A and Group C(Pgt;0.05). However, both Group A and Group C were superior to Group B in the above variables, with significant differences(Plt;0.05). Conclusion Utilization of the pedicled greater omentum to wrapthe artificialnerve grafts can promote an early revascularization of the artificial nerve graft and an early nerve regeneration of the artificial nerve graft because of an enhanced blood supply to the nerve graft.
OBJECTIVE: To explore the effects of different methods of fetal spinal cord(FSC) tissue transplanted on reversing the axotomy-induced neurons atrophy of adult rats injured spinal cord. METHODS: One hundred and twenty adult rats received lumbar spinal cord hemisection. Experimental rats were divided into five groups, the control group(Group A); spinal cord hemisection only(Group B); spinal cord hemisection plus FSC transplant (Group C); spinal cord hemisection plus FSC transplant plus pedicled paraspinal muscle(Group D); spinal cord hemisection plus FSC transplant plus pedicled omentum (Group E). Combined behavioral scores(CBS), somatosensory evoked potentials (SEP), motor evoked potentials(MEP) were examined to evaluate the recovery of neurological function after operation. Rats were sacrificed after 1, 4 and 12 weeks. Nissl stained section was used for neurons quantitative image analysis. The positive cells were quantitative analysis by computer image analysis system. RESULTS: The different methods of FSC tissue transplantation could prevent the neurons atrophy secondary to axon injury of spinal cord in adult rats. The size of neurons were observed in five groups, they were group E gt; group D gt; group C gt; group B gt; group A (P lt; 0.05). Those increases in size of neurons were paralleled with a significant improvement in neurological function recovery. CONCLUSION: It indicates that the different methods of FSC tissue transplantation can maintain the neurons morphology and improve the neurological function of rats.
ObjectiveTo explore the methods of breast reconstruction surgery with laparoscopically harvested pedicled omental flap (LHPOF), and analyze the patient’ evaluation, operation process and postoperative follow-up. MethodsPatients with pathologically proven breast cancer or plasma cell mastitis who underwent LHPOF breast reconstructive surgery were retrospectively collected from the Department of Breast and Thyroid Surgery of The Second Affiliated Hospital of Chongqing Medical University from February 2022 to December 2023. ResultsA total of 16 patients were collected. The mean age of patients was 43.3 (ranging from 27 to 68) years old, the mean body mass index of patients was 23.0 kg/m2 (ranging from 18.3 to 28.6 kg/m2). One patient underwent transplant omental flat removal surgery due to postoperative flap thrombosis, and one patient choose to give up breast reconstruction due to insufficient flap volume. The single-stage surgery was performed successfully in the rest patients with no requirement of laparotomy. All patients made an uneventful recovery after surgery. During the follow-up period, which averaged 13 months and ranged from 9 to 17 months, the major symptoms were mild epigastric bulge (2 patients) and flap atrophy (1 patient), no serious flap-related or donor site-related complications such as flap loss, bowel dysfunction and abdominal incisional hernia. In general, the aesthetic results were satisfactory. ConclusionsUsing LHPOF in immediate breast reconstruction surgery can achieve satisfied aesthetic result, for the soft and natural appearance of the reconstructed breast. In the mean time, compared with other autologous tissue reconstruction approaches, LHPOF has lower incidences of complications of donor-site and flap-site.
ObjectiveTo summarize the clinical features and imaging features of CT in the omental torsion, and in order to reduce the misdiagnosis and missed diagnosis rate of imaging features. MethodsThe data of 16 cases of omental torsion (secondary 15 cases, primary 1 case) and 286 cases of acute appendicitis (eliminated the subhepatic and retroperitoneal ectopic appendix) in our hospital from 1998 to 2014 were retrospectively analyzed. ResultsEleven cases of omental torsion suffered from the shifting pain in right lower quadrant. No obvious shifting abdominal pain was observed in other 4 cases whose main manifestations were abdominal tenderness and rebound tenderness around umbilicus. The patient of the remaining 1 case had enclosed mass in the area of left groin with pain and suffered from continuous periumbilical pain. Abdominal spiral CT examination was performed in 16 patients before operation. Increased signal intensity of globular soft tissue, which deviating from McBurney's point, was found at level of distal umbilicus by preoperative spiral CT in 13 cases. One case of omental torsion associated with ncarcerated inguinal hernia was missed. ConclusionsOmental torsion manifests chiefly shifting pain in right lower quadrant, abdominal tenderness, and rebound tenderness around umbilicus. It is easily confused with appendicitis. Abdominal spiral CT should be chosen as a preferred means in preoperative diagnosis of omental torsion.
目的 探讨捆绑式胰肠吻合术的改良方法。方法 对8例胰十二指肠切除术患者行捆绑式胰肠吻合术时采用带血管蒂的大网膜包绕空肠浆肌鞘，以达捆绑之目的。8例中行桥袢空肠造瘘5例，胆总管造口T管引流3例，并观察其术后5 d内每天平均引流液量。结果 8例患者均治愈出院，无胰瘘、胆瘘发生； 5 d内每天平均引流液量除第1天胆总管造口低于空肠造瘘外，其余4 d每天平均引流液量均明显高于空肠造瘘； 1例空肠造瘘者术后第8天继发胰腺残端出血，经电灼后止血。结论 带血管蒂的大网膜包绕空肠浆肌鞘完全可以代替粗线环绕空肠结扎，并使整个空肠浆肌鞘与胰腺紧贴，更利于胰肠间愈合； 空肠造瘘或胆总管造口对桥袢空肠均有减压引流的作用，但T管引流更简单、有效、省时。
目的 探讨Miles手术重建盆底腹膜困难时的处理对策。方法 对Miles手术重建盆底腹膜困难的患者，根据其大网膜的解剖情况，将带血管蒂大网膜经左或右结肠旁沟放入骶前腔，利用大网膜去填塞骶前腔或修补盆底腹膜缺损。结果 3例患者分别用带蒂大网膜加气囊填塞骶前腔、带蒂大网膜单纯填塞骶前腔、带蒂大网膜修补盆底腹膜等方法，减轻了缝合盆底腹膜时的张力，使盆底腹膜得以顺利重建。结论 用带血管蒂大网膜填塞骶前腔或修补盆底腹膜缺损，可防止Miles术后并发症发生，促进患者早日康复。