Objective To evaluate the performance of microRNA‐21(miRNA‐21) for the diagnosis of esophageal cancer .Meth‐ods Published literatures ,investigating the diagnostic performance of miRNA‐21 in esophageal cancer ,were screened .QUADAS‐2 software was used to evaluate the quality of related literatures .All analysis about relevant data was accomplished by using Meta‐DiSc statistical software .The sensitivity ,specificity ,positive likelihood rate ,negative likelihood rate and diagnostic odds ratio were pooled ,using corresponding effects models .Results Four studies met the inclusion criteria ,accumulating 202 esophageal cancer pa‐tients and 124 healthy controls .The summary estimates for miRNA‐21 in the diagnosis of esophageal cancer were with diagnostic sensitivity of 0 .85 and specificity of 0 .65 .The area under summary receiver operating characteristic curve was 0 .817 4 .Conclusion miRNA‐21 might be a novel biomarker for the diagnosis of esophageal cancer ,and could be used for screening and auxiliary diag‐nosis of esophageal cancer .

Objective:To evaluate in vitro antifungal activities of zhexinmycin against dermatophytes. Methods: The minimum in-hibitory concentration (MIC) and the minimum fungicidal concentration (MFC) of zhexinmycin against 7 strains of dermatophytes were determined by using broth microdilution method according to CLSI M-38A. Results:The MIC of zhexinmycin against dermatophytes was within the range of 0. 125-2. 000μg·ml-1 . The MFC was within the range of 0. 250-4. 000μg·ml-1 . Conclusion:Zhexinmycin shows strong in vitro antifungal effect on multiple fungi such as Epidermophyton floccosum, Trichophyton rubrum, Trichophyton violaceum, Mi-crosporum canis, Trichophyton mentagrophytes, Trichophyton tonsurans and Microsporum gypseum.

Objective　To study the relationship between gene's mutation in sputum cells and smoking consumption of patients with lung cancer. Methods　Sputum dispose liquid was added into 0.5?ml sputum, DNA was extracted twicely with saturated phenol-chloroform and ethanol precipitate; p53 and K-ras gene mutations were detected by using SSCP-PCR and RFLP-PCR methods. Results　Seventy-one of 110 patients with lung cancer were heavy smokers (index of smoking≥400), 55 of 71(77.5％) patients with heavy smoking were detected with gene alterations of p53 or K-ras (P＜0.05). Average indexes of smoking in the patients with p53 or K-ras were 861 and 630 respectively, whereas those in non-smokers were 284 and 554 (χ2＝36.56，P＝0.002). Conclusion　Detection of oncogene alterations in sputum is a simple method to practice. Oncogene alteration in smoking patients with lung cancer is higher, especially in heavy smokers, than those with no smoking. The results show that heavy smoking is one of the causes in oncogene mutations of bronchus and further investigation is necessary.

Co-occurrence of renal cell carcinoma with two different histology is very rare. Here we present a 61-year-old gentleman with right renal mass in clinics. The diagnosis was right renal cell carcinoma by two different enhanced mass showing on CT scan. Right laparoscopic nephrectomy was performed. Pathology showed that one mass was papillary renal cell carcinoma, the other was clear cell renal cell carcinoma. No recurrence or metastasis was found during 36 months of follow up.

Objective:To investigate the clinicopathological characteristics, genetic features, diagnosis and differential diagnosis of pulmonary artery intimal sarcoma (PAIS).Methods:Three cases of PAIS were collected from Jiangsu Province People′s Hospital (from February 2016 to November 2019). The clinical data, imaging examination, morphology, immunostaining, and molecular changes were retrospectively analyzed.Results:There were 1 male and 2 females (age: 32, 50, 60 years), who had symptoms of cough, asthma or chest tightness. Imaging findings indicated low density filling defects which were suspected as thrombus, embolism or myxoma. Grossly, the main tumor was located in the elastic arteries and their lobar branches, also extended into the atrium and ventricle, with lung parenchymal infiltration focally. Microscopically, tumor cells were predominantly composed of abundant spindle cells with obvious atypia and myxoid background, resembling fibroblastic or myofibroblastic differentiation. Active mitotic figures and necrosis could be seen in some areas. Immunohistochemical staining of vimentin was strongly positive, while pan-cytokeratin, S-100, desmin, Fli-1, CD31, SMA and ERG etc were variably positive only in focal areas. FISH detection showed amplification of MDM2 gene in three cases and EGFR gene in two cases. Metastatic lesions were found in one case by 18, 32 and 42 months after surgery respectively. There was no recurrence or metastasis in the other two cases.Conclusions:PAIS is one of exceptionally poor differentiated mesenchymal tumor that arises from the arterial intima of elastic pulmonary arteries. There was no definite differention in morphology. Gene detection shows amplification of MDM2 and EGFR gene. This tumor often has poor prognosis with aggressive behavior. Complete resection is the only effective therapeutic option. There is disagreement as to whether chemotherapy and radiotherapy can improve survival.