Rapid on-site evaluation improves diagnostic performance of fine-needle aspiration cytology for salivary lesions: Comparison of data from two cancer centers in southern China.

OBJECTIVES: To evaluate the diagnostic performance of Milan system for reporting salivary gland cytopathology (MSRSGC) in two southern China tertiary cancer centers and investigate the impact of rapid on-site evaluation (ROSE) on FNAC performance. MATERIALS AND METHODS: Five hundred and forty-nine patients who underwent FNAC for salivary lesions with surgical follow-up from two centers were enrolled in this retrospective cohort study. All slides were recategorized using MSRSGC after consensus on diagnostic criteria for each category. The diagnostic performance of FNAC for salivary lesions was evaluated and compared and the impact of ROSE on FNAC performance was analyzed. RESULTS: The distribution of cases per category based on the MSRSGC criteria in the whole series was as followed: ND 49 (8.9%), NN 76 (14.4%), BN 262 (47.7%), AUS 20 (3.6%), SUMP 43 (7.8%), SM 21 (3.8%), M 78 (14.2%). The SUMC series had significantly more ND distributions than JXCH did (16.2% vs. 0, p = .000). Risk of malignancy for each category in the total series was as followed: 42.9% for ND, 9.2% for NN, 3.8% for BN, 30.0% for AUS, 23.3% for SUMP, 81.0% for SM, and 94.9% for M. When ND and AUS/SUMP were excluded, the sensitivity, specificity, PPV, NPV, and accuracy were 84.0%, 97.1%, 89.9%, 95.1%, and 94.0%, respectively; sensitivity, specificity, PPV, NPV, and accuracy were comparable between the two centers. CONCLUSIONS: FNAC using MSRSGC provides a good tool in preoperative evaluation for salivary lesions in southern China. ROSE improves its diagnostic performance by reducing the ratio of the ND category.

Recognition of Key Genes in Human Anaplastic Thyroid Cancer via the Weighing Gene Coexpression Network.

Methods: For determining pathways and key genes that have relation with development of ATC, differentially expressed genes (DEGs) from GSE33630 as well as GSE65144 expression microarray were screened. Furthermore, we also worked on carrying out the task of constructing a protein-protein interaction (PPI) network and the work of weighing gene coexpression network (WGCNA). DAVID was utilized for the performance of the Gene Ontology (GO) as well as KEGG pathway enrichment analyses for DEGs. We used TCGA THCA data and GSE53072 to further verify the hub gene and hub pathway. Results: We came to the conclusion of the recognition of a total of 1063 genes as DEGs. Analysis regarding functional and pathway enrichment showed that there existed a notable enrichment of upregulated DEGs in the organization of extracellular structure and matrix organization, as well as in organelle fission and nuclear division. The downregulated DEG was markedly gathered in the thyroid hormone metabolic process and generation, as well as in the metabolic process of cellular modified amino acid. We identified 10 hub genes (CXCL8, CDH1, AURKA, CCNA2, FN1, CDK1, ITGAM, CDC20, MMP9, and KIF11) through the PPI network, which might be strongly linked to the carcinogenesis and the development of ATC. In the coexpression network, 6 modules that were relevant to ATC were recognized. The modules were related to the interaction of signaling pathway of p53, Hippo, PI3K/Akt, and ECM-receptor. This hub genes and hub pathway were further successfully validated as a potential biomarker for carcinogenesis and prediction in another database GSE53072. Conclusion: To summarize, this research displayed an illustration of hub genes and pathways that had relation with ATC development, which suggested that DEGs and hub genes, recognized on the basis of bioinformatics analyses, were valuable in the diagnosis for patients with ATC.

Repair of postoperative defects of oral cancer with submental island flaps based on vascular pedicles of different states: a multicenter retrospective study.

Submental island flap has certain advantages in repairing postoperative defects of oral cancer, and it can often achieve similar or even better effects compared with those of the free tissue flap. In this study, according to the different characteristics of patients and postoperative defects of oral cancer, submental island flaps with different states of vascular pedicle were prepared, and its repair methods, safety, and clinical effects in treating postoperative defects of oral cancer were investigated. 83 patients with oral cancer who met the inclusion criteria were selected. According to the different characteristics of the patients and postoperative defects of oral cancer, the traditional submental island flap vascular pedicle was modified into three different states: submental artery perforator flap, vascular pedicled flap with the anterior belly of digastric muscle but without the submandibular gland (SIF with anterior belly of DM), and vascular pedicled flap with the anterior belly of the digastric muscle and the submandibular gland (SIF with anterior belly of DM and SG). The types of the submental artery and the drainage vein, flap survival, and complications, were observed. The flap was successfully harvested for all patients, and the submental artery could be found or separated for all of them, with the venous drainage to the internal jugular vein in 57 (57/83, 68.67%), to the external jugular vein in 18 (18/83, 21.69%), and to the anterior jugular vein in eight (8/83, 9.64%) cases. Submental artery perforator flap was used for 11 cases, complete necrosis occurred in two cases (2/11, 18.18%), partial necrosis occurred in one case (1/11, 9.09%); SIF with anterior belly of DM was used for 49 cases, complete necrosis occurred in one case (1/49, 2.04%), partial necrosis occurred in four cases (4/49, 8.16%); SIF with anterior belly of DM and SG was used for 23 cases, including chimeric flap combining the submental island flap and the submandibular gland used for 15 cases, there were no cases of complete or partial necrosis. Submental island flap was effective in repairing postoperative defects of oral cancer. Submental island flaps with three different states of vascular pedicle could repair oral cancer-affected tissues with different defect characteristics.

Tailoring biochar for persulfate-based environmental catalysis: Impact of biomass feedstocks.

Biochar, a carbonaceous material with engineering potential, has gained attention as an efficient catalyst in persulfate-based advanced oxidation processes (PS-AOPs). Although biomass feedstocks are known as a critical factor for the performance of biochar, the relationship between the catalytic efficiency/mechanism and the types of biomass feedstocks is still unclear. Thus, according to recent advances in experimental and theoretical researches, this paper provides a systematic review of the properties of biochar, and the relationship between catalytic performance in PS-AOPs and biomass feedstocks, where the differences in physicochemical properties (surface properties, pore structure, etc.) and activation path of different sourced biochars, are introduced. In addition, how the tailoring of biochar (such as heteroatomic doping and co-pyrolysis of biomass) affects its activation efficiency and mechanism in PS-AOPs is summarized. Finally, the suitable application scenarios or systems of different sourced biochars, appropriate methods to improve the catalytic performance of different types of biochar and the prospects and challenges for the development of biochar in PS-AOPs are proposed.

Management of refractory cervical anastomotic fistula after esophagectomy using the pectoralis major myocutaneous flap.

INTRODUCTION: A refractory cervical anastomotic fistula which postoperatively remains unhealed for more than 2 months under conservative care severely impacts the quality of life of the patient and potentially leads to anastomotic stricture after the fistula heals. It is widely accepted that, to avoid this complication, refractory cervical anastomotic fistulas should undergo more aggressive treatments. However, when and which surgical intervention should be considered is unclear. OBJECTIVE: This study was designed to evaluate the role of the pectoralis major myocutaneous flap in the management of refractory cervical anastomotic fistulas based on our experience of 6 cases and a literature review. METHODS: Six patients diagnosed with refractory cervical anastomotic fistula after esophagectomy treated using pectoralis major myocutaneous flap transfer were included in the study. The clinical data, surgical details, and treatment outcome were retrospectively analyzed. RESULTS: All patients survived the operations. One patient who had a circumferential anastomotic defect resulting from surgical exploration developed a mild fistula in the neo-anastomotic site in the 5th postoperative day, which healed after 7 days of conservative care. This patient developed an anastomotic stricture which was partially alleviated by an endoscopic anastomotic dilatation. All the other 5 patients had uneventful recoveries after operations and restored oral intake on the 10th-15th days after operation, and they tolerated normal diets without subsequent sequelae on follow-up. One patient developed both local and lung recurrence and died in 15 months after operation, while the other 5 patients survived with good tumor control during the follow-up of 25-53 months. CONCLUSION: The satisfactory treatment outcome in our study demonstrates that pectoralis major myocutaneous flap reconstruction is a reliable management modality for refractory cervical anastomotic fistulas after esophagectomy, particularly for those patients who experienced persistent fistulas after conservative wound care and repeated wound closures.

CAB39 Promotes the Proliferation of Nasopharyngeal Carcinoma CNE-1 Cells via Up-Regulating p-JNK.

AIM: To investigate the role of CAB39 in nasopharyngeal carcinoma (NPC) development and examine its expression level in NPC tumor samples. METHODS: Immunohistochemistry staining of NPC tissue microarray was conducted to detect the expression of CAB39 protein in NPC tissues, and the clinical significance of CAB39 was evaluated. Lentivirus-mediated over-expression of CAB39 was designed to increase CAB39 expression in CNE-1 cells. Cell colony formation, cell cycle and CCK-8 proliferation experiments were performed to compare the proliferation ability of CNE-1 cells with or without CAB39 over-expression. Western blotting was conducted to examine downstream targets of CAB39. RESULTS: CAB39 expression was higher in tumor samples compared to normal tissue and the higher CAB39 expression was positively correlated to higher TNM stage and distant metastasis rate and non-keratinized state. Further, CAB39 over-expression dramatically increased the proliferation and colony formation of CNE-1 cells. Finally, higher p-JNK protein level was found in CAB39 over-expressing cells. CONCLUSION: CAB39 promotes the proliferation of CNE-1 cells via up-regulating p-JNK.

Au@PdAg core-shell nanotubes as advanced electrocatalysts for methanol electrooxidation in alkaline media.

Developing active and cost-effective electrocatalysts for methanol electrooxidation is crucial to the commercialization of direct methanol fuel cells (DMFCs). In this study, Au@PdAg core-shell nanotubes are synthesized in an aqueous solution by sequential galvanic displacement between Ag nanowires and AuCl4 - and PdCl4 2-. High-resolution transmission electron microscopy studies demonstrate that the obtained Au@PdAg nanotubes consist of a Au-rich interior that is encapsulated with a three-dimensionally dendritic, porous PdAg alloy shell, forming a core-sheath nanostructure. Electrochemical studies indicate that the as-prepared Au@PdAg nanotubes exhibit apparent electrocatalytic activity and stability towards methanol electrooxidation in alkaline media. This remarkable high performance can be attributed to their large specific surface area and unique porous morphology.

Management of refractory cervical anastomotic fistula after esophagectomy using the pectoralis major myocutaneous flap / Tratamento da fístula anastomótica cervical refratária após esofagectomia utilizando retalho miocutâneo do músculo peitoral maior

Abstract Introduction A refractory cervical anastomotic fistula which postoperatively remains unhealed for more than 2 months under conservative care severely impacts the quality of life of the patient and potentially leads to anastomotic stricture after the fistula heals. It is widely accepted that, to avoid this complication, refractory cervical anastomotic fistulas should undergo more aggressive treatments. However, when and which surgical intervention should be considered is unclear. Objective This study was designed to evaluate the role of the pectoralis major myocutaneous flap in the management of refractory cervical anastomotic fistulas based on our experience of 6 cases and a literature review. Methods Six patients diagnosed with refractory cervical anastomotic fistula after esophagectomy treated using pectoralis major myocutaneous flap transfer were included in the study. The clinical data, surgical details, and treatment outcome were retrospectively analyzed. Results All patients survived the operations. One patient who had a circumferential anastomotic defect resulting from surgical exploration developed a mild fistula in the neo-anastomotic site in the 5th postoperative day, which healed after 7 days of conservative care. This patient developed an anastomotic stricture which was partially alleviated by an endoscopic anastomotic dilatation. All the other 5 patients had uneventful recoveries after operations and restored oral intake on the 10th-15th days after operation, and they tolerated normal diets without subsequent sequelae on follow-up. One patient developed both local and lung recurrence and died in 15 months after operation, while the other 5 patients survived with good tumor control during the follow-up of 25-53 months. Conclusion The satisfactory treatment outcome in our study demonstrates that pectoralis major myocutaneous flap reconstruction is a reliable management modality for refractory cervical anastomotic fistulas after esophagectomy, particularly for those patients who experienced persistent fistulas after conservative wound care and repeated wound closures.

Resumo Introdução Uma fístula anastomótica cervical refratária, que permanece sem cicatrização por mais de 2 meses sob cuidados conservadores, afeta gravemente a qualidade de vida do paciente e potencialmente causa estenose anastomótica após a cicatrização da fístula. É amplamente aceito que as fístulas anastomóticas cervicais refratárias devem ser submetidas a tratamentos mais agressivos. No entanto, quando e qual intervenção cirúrgica deve ser considerada ainda é incerto. Objetivo Avaliar o papel do retalho miocutâneo do peitoral maior no manejo de fístula anastomótica cervical refratárias com base em nossa experiência de 6 casos e uma revisão da literatura. Métodos Foram incluídos no estudo seis pacientes diagnosticados com fístula anastomótica cervical refratária após esofagectomia tratados com transferência de retalho miocutâneo do peitoral maior. Os dados clínicos, detalhes cirúrgicos e resultado do tratamento foram analisados retrospectivamente. Resultados Todos os pacientes sobreviveram às cirurgias. Um paciente com defeito anastomótico circunferencial, resultante da exploração cirúrgica, desenvolveu uma fístula leve no sítio neoanastomótico no 5° dia de pós-operatório, que foi resolvida após 7 dias de tratamento conservador. Esse paciente desenvolveu uma estenose anastomótica parcialmente aliviada por uma dilatação endoscópica anastomótica. Todos os outros 5 pacientes tiveram recuperações sem intercorrências após as cirurgias, restabeleceram a ingestão oral 10 ou 15 dias após a operação e toleraram dietas normais sem sequelas subsequentes no seguimento. Um paciente desenvolveu recorrência local e pulmonar e morreu 15 meses após a cirurgia, enquanto os outros 5 pacientes sobreviveram com bom controle tumoral durante o seguimento de 25 a 53 meses. Conclusão O resultado satisfatório do tratamento em nosso estudo demonstra que a reconstrução com o retalho miocutâneo do peitoral maior é uma modalidade de manejo confiável para as fístula anastomótica cervical refratárias após a esofagectomia, particularmente nos pacientes que apresentaram falha após o tratamento conservador das feridas cirúrgicas e com fechamento repetido delas.

[Prognostic analysis of moderate tongue squamous cell carcinoma cases and the value of induction chemotherapy].

OBJECTIVE: To evaluate the effect of induction chemotherapy on the patients with moderate tongue squamous cell carcinoma and to investigate the factors that influence prognosis of these patients. METHODS: One hundred and twenty two patients with moderate tongue squamous cell carcinoma (stage II-III, T2-3 N0/T1-3N1), treated from Jan. 1990 to Dec. 1999 were retrospectively reviewed. Among them, 69 and 53 patients were received operation alone and operation after induction chemotherapy respectively [cisplatin + 5-fluorouracil + bleomycin-A5 (PBF), 17 cases; bleomycin-A5, 36 cases]. Survival rate was estimated by Kaplan-Meier method. Multivariate analysis by the Cox proportional hazard model. RESULTS: The mean follow-time of all patients were (79.9 +/- 49.8) (x +/- s) months (range: 7 to 177 months), and 45 patients died (including 5 lost to follow up) , 66 of 77 patients alive followed more than 5 years. The overall 3-year and 5-year survival rate were 79.4% and 69. 0% respectively. The overall 3-year and 5-year free-disease survival rate were 71.7% and 66. 3% respectively. The survival rate of 3-year and 5-year was 82.5% and 73.1% respectively for the group of operation alone; 82.4% and 70.1% respectively for the group of operation after induction chemotherapy with PBF, 72.2% and 61.1% respectively for the group of operation after induction chemotherapy with bleomycin-A5; and there were no significant difference between the above three groups (chi2 = 0.42, P = 0.8106). The locoregional recurrence rate were 30.4%, 41.2% and 38.9% for the operation alone group, operation after PBF induction chemotherapy group and operation after bleomycin-A5 induction chemotherapy group respectively. No significant benefit on decreasing locoregional recurrence (chi2 = 1.148, P = 0.563) or distant metastasis rate (chi2 = 2.305, P = 0.316) were found by induction chemotherapy by univariate analysis. Using multivariate analysis, risk factor that independently influence survival was the recurrence. CONCLUSIONS: Risk factors that independently influence survival of moderate tongue squamous cell carcinoma was the locoregional recurrence. No significant benefit on improving survival rate or decreasing locoregional recurrence or metastasis rate were found by induction chemotherapy, there was no difference between the two induction chemotherapy schemes on the survival rate or locoregional recurrence or metastasis rate of these patients.

[Treatment and prognostic analysis of 92 cases with advanced mobile tongue squamous cell carcinoma].

OBJECTIVE: To compare the results of different treatment modalities for the advanced tongue squamous cell carcinoma and investigate the factors that influence its prognosis. METHODS: Ninety-two patients with advanced tongue squamous cell carcinoma without distant metastasis, treated in our hospital from Jan. 1990 to Dec. 1999 were retrospectively reviewed. Survival rate was estimated by Kaplan-Meier method, and multivariate analysis was performed by the Cox Proportional hazard model. RESULTS: The overall 3-year and 5-year survival rates were 52.40% and 37.23% respectively. There was a significant difference in the overall between the two groups survival rate (chemotherapy only and radiotherapy after induced chemotherapy) and the three groups (operation only, operation after induced chemotherapy, radiotherapy after operation) cTNM stage, operation for the primary lesion and local recurrence were the independent factors that influenced the prognosis. CONCLUSIONS: Risk factors that independently influence the survival of patients with advanced tongue squamous cell carcinoma were the local recurrence, cTNM and receiving operation or not for the primary lesion. Operation only or comprehensive therapy including operation could give a better prognosis, but the results of chemotherapy only or radiotherapy after chemotherapy were poor.

[Neck management in oral tongue squamous cell carcinoma of stage I: a report of 95 cases].

BACKGROUND & OBJECTIVE: Cervical lymph node metastasis and recurrence are the most common causes of treatment failure to patients with oral tongue carcinoma. The neck management for oral tongue carcinoma of early stages remains controversial. This study was to evaluate the effectiveness of elective neck dissection (END) in treating oral tongue squamous cell carcinoma (SCC) of stage I. METHODS: A retrospective analysis of 95 patients with oral tongue SCC of stage I, undergone surgical treatment from 1988 through 1997, was performed to determine the impact of END on patients' outcomes,such as regional recurrence,and overall survival. Of the 95 patients, 24 (observation group) did not undergo END, while the rest 71 (END group) underwent END. RESULTS: In observation group, the regional recurrence rate was 25.0% (6/24), and the recurrence-related mortality was 20.8% (5/24). END significantly reduced both the regional recurrence rate and the recurrence-related mortality to 7.0% (5/71) and 4.2% (3/71) respectively (Chi(2) test, P < 0.05). The overall survival rate of END group was also significantly higher than that of observation group (log-rank test, P < 0.05). CONCLUSION: END may improve the neck control rate of oral tongue SCC of stage I, reduce the recurrence-related mortality, and increase the overall survival rate of patients.