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Objective:To introduce the advantages and clinical experience of relaying antero thigh flap in the resurfacing of the donor defect after anteromedial thigh (AMT) flap transfer for oral cancer defect reconstruction.Methods:The number, courses and location of antero thigh perforators were recorded in 6 adult specimens, (3 male and 3 female). Specimen was produced via femoral artery perfusion after joining lead oxide red setting, up to the inguinal ligament, down to the superior margin of patella, lateral to the lateral femoral intermuscular septum, medial near the lateral margin of adductor longus muscle. From February 2016 to December 2018 in Hunan Provincial Cancer Hospital, 13 cases (11 male and 2 female) with oral carcinoma (8 tongue carcinoma and 5 buccal cancer), leaving tongue or mouth defects which were reconstructed by free AMT perforator flaps.Results:All free AMT flaps were harvested smoothly, the flap size ranged from 7.5 cm×4.5 cm to 13.0 cm×7.5 cm, the donor sites were reconstructed with relaying ALT flaps in 10 cases, with relaying AMT flaps in 3 cases, the relaying ALT flap size ranged from 8.5 cm×5.0 cm to 18.0 cm×7.0 cm, the relaying AMT flap size ranged from 7.5 cm×4.0 cm to 15.0 cm×7.0 cm. All flaps survived uneventfully, no vascular crisis or wound dehiscence, infection occurred. All patients were followed up for 12~28 months, all flaps healed smoothly, only linear scar was left in the donor sites, the color, appearance and contour of flaps were natural, and the function of thighs were not affected.Conclusions:When it is difficult to elevate the free anterolateral thigh flap, the free anteromedial thigh flap can be used to repair the oral cancer defect. When the direct closure of the flap donor area is of big tension, the relaying antero flap can be used to reconstruct the donor site, minimize the operation time and improve the outcome.
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Objective:To explore the clinical application of conjoined bipedicle deep inferior epigastric perforator flap (DIEP) in reconstruction of unilateral breast for patients with breast cancer.Methods:From August, 2007 to Feburary, 2017, 41 cases of breast cancer patients received conjoined bipedicle DIEP to reconstruct breasts at the same time of radial operation of mastocarcinoma or in the second phase. Their age ranged from 27 to 49 (34.5±2.7) years old. Twenty-two cases had one-staged and other 19 had two-staged breast reconstruction. All patients were in scheduled followed-up.Results:In this study, 41 conjoined bipedicle DIEP were harvested, including 12 of lateral branch type, 9 of medial branch type, and 20 of combined lateral and medial branch type. The length of flap was (24.5±0.5) cm, the width of flap was (10.8±2.8) cm, and the thickness of flap was(5.5±0.4) cm. The length of flap pedicle was (12.5±0.6) cm. The average weight of flap was 565 (ranged 365-1 050) g. The vascular combinations in the receiving area included: ①Eighteen cases of proximal and distal thoracic vessels. ②Eleven cases proximal ends of internal mammary vessels and lateral thoracic vessels. ③Eight cases of proximal ends of internal mammary vessels and thoracodorsal vessels. ④Four cases thoracodorsal vessels and lateral thoracic vessels. In 3 patients, in order to further promote the venous outflow of the flap, the superficial inferior epigastric vein of the flap was anastomosed with the thoracoacromial vein of the recipient area. All flaps were successful and completely survived without marginal necrosis or infection. The shape, texture and elasticity of the reconstructed breasts were good without flap contractive deformity. There were only linear scars left in the donor sites, and function of abdomen was not affected. All 41 patients were followed-up for 12 to 50 months, with an average of 15.8 months with satisfied results. No local recurrence happened. Only linear scar was left in the donor site of abdomen, and the function of abdominal wall was not affected. In all cases bilateral rectus abdominis muscle strength was level 5.Conclusion:The conjoined bipedicle DIEP could be a safe and valuable option as an alternative method for autologous breast reconstruction.
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Objective To investigate the correlation between the mutation of pncA gene and the susceptibility to pyrazinamide ( PZA) in Mycobacterium tuberculosis complex ( MTBC) strains and to analyze the mutation of panD and rpsA genes in wild type isolates without pncA gene mutation.Methods The sus-ceptibilities of 108 MTBC strains to first-line drugs including PZA were detected by using the MGIT 960 TB system.PCR was performed to amplify the 16S rDNA and pncA, panD and rpsA genes.The PCR products were analyzed by DNA sequencing analysis .Results Among the 78 multidrug-resistant MTBC strains , 47 isolates (60%) were resistant to PZA.Four out of 30 (13%) strains that were sensitive to ethambutol , iso-niazid, rifampicin and streptomycin (EIRS) were resistant to PZA.The drug-resistant MTBC strains showed higher resistance rate to PZA than that of the EIRS sensitive strains .There were 49 ( 96%) PZA-resistant isolates and 4 (7%) PZA-sensitive isolates occurred pncA gene mutation.Most of the pncA gene mutations in the genomes of PZA-resistant strains were base substitution mutation , especially the His57Asp substitu-tion.The pncA gene mutations centralized in the regions of 160-169, 203-289, 309-396 and 413-467.Seven novel mutation sites of pncA gene were observed including T175C, C188A, G insertion at 68, AGC insertion at 235, C insertion at 339, CC insertion at 392 and GT deletion at 395.The mutation sites founded in the genomes of PZA-sensitive strains were different from those of the PZA-resistant strains .No mutation of the pncA gene and the upstream regulatory sequence was found in two PZA-resistant strains , NJ44 and NJ108 . The sequence analysis of panD and rpsA gene showed that the NJ 108 strain had panD gene mutation at G419A, but no mutation was detected in the NJ 44 strain.Conclusion The multidrug-resistant MTBC strains showed higher resistance rate to PZA .The pncA gene mutation was common in PZA-resistant MTB strains and the panD gene mutation was also worthy of attention .
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To evaluate whether microsurgery gains better result in root coverage compared to conventional surgical techniques. A number of databases were searched to identify eligible studies from January 1992 to January 2015. The following outcomes were evaluated: number of sites exhibiting complete root coverage and patients' esthetic satisfaction. Four Randomized Clinical Trials [RCTs] fulfilled the inclusion criteria. A pooled estimate from the two RCTs regarding sub-epithelial connective tissue grafts [SCTG] showed significant achievement in complete root coverage in the microsurgical group [relative risk [RR]:1.63; 95% confidence interval [Cl]: 1.12 to 2.36; P=0.01] with acceptable heterogeneity. The other two studies were about coronal advanced flap [CAP] with enamel matrix derivative or free rotated papilla autograft and did not qualify for meta-analysis. Patients' esthetic satisfaction was analyzed only by one study. Using microsurgical technique for treating gingival recessions may be effective in achieving complete root coverage for SCTG