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Objective To investigate the correlation between the characteristics of peritumoral edema and the aggressiveness of breast invasive ductal carcinoma in preoperative magnetic resonance imaging(MRI).Methods A total of 79 patients(79 lesions)who underwent radical mastectomy in the First Affiliated Hospital of Ningbo University from January 2020 to May 2021 and were pathologically diagnosed as invasive ductal carcinoma were included in invasive ductal carcinoma group,and 45 patients(49 lesions)with benign breast lesions were included in benign lesion group during the same period.The difference of peritumoral edema between two groups and the relationship between different pathological features of invasive ductal carcinoma and peritumoral edema were compared.Results The peritumoral edema in benign lesion group was significantly less severe than that in invasive ductal carcinoma group(χ2=25.330,P<0.05).The tumor size of invasive ductal carcinoma group was positively correlated with the degree of peritumoral edema(r=0.381,P<0.05).There were significant differences in molecular type,histological grade,T stage,lymph node metastasis and Ki-67 expression level among patients with different peritumoral edema grades(P<0.05).Ki-67 expression level and the number of lymph node metastasis were positively correlated with the degree of peritumoral edema(r=0.348,0.273,P<0.05).Conclusion The degree of peritumoral edema in MRI correlates with the aggressiveness of breast invasive ductal carcinoma and can be used as one of the tools to evaluate breast carcinoma.
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Objective:To investigate the risk factors of lymph node metastasis in the cervical region VI (central region) in patients with papillary thyroid microcarcinoma (PTMC) of cN0 stage, and then to determine whether to perform prophylactic central lymph node dissection.Methods:The clinical data of 500 patients with PTMC who underwent surgery from Jan. 2013 to Dec. 2015 in Ningbo First Hospital were retrospectively analyzed. Due to the pathological results, all patients were divided into two groups: central lymph node metastasis (CLNM) positive group and CLNM negative group. SPSS18.0 was used for analyzing.Results:Of the 500 cases of PTMC of cN0 stage, 142 cases had lymph node metastasis. Gender, the maximum tumor diameter, tumor invasion outside the gland, boundary, calcification in tumor, single or multiple lesions, aspect ratio and blood flow were risk factors for CLNM in patients with PTMC of cN0 stage. Multivariate analysis identified that male ( P=0.014) , tumor size ≥0.5 cm ( P=0.03) , tumor invasion outside the gland ( P=0.003) , unclear boundary ( P=0.032) , calcification ( P=0.009) , aspect ratio ≥1 ( P=0.001) were independent predictors factors for CLNM of PTMC. Conclusion:Male, unclear boundary, tumor size ≥0.5cm, tumor invasion outside the gland, calcification, aspect ratio ≥1 are the risk factors of CLNM in patients with cN0 PTMC. Prophylactic central lymph node dissection should be performed for patients without lymph node metastasis but with one risk factor or more.
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Glyptothorax zainaensis, a small-sized benthic fish which mainly distributes in the Nujiang River, Lancangjiang river and their tributaries in China. In the present study, the complete mitochondrial genome of G. zainaensis was sequenced to be 16 537 bp in length, including 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs, a control region and the origin of the light strand replication. The overall nucleotide composition was 31.17% A, 25.95% T, 27.48% C and 15.40% G, with an A + T bias of 57.13%. The gene composition and the structural arrangement of the G. zainaensis complete mitochondrial DNA were identical to most of the other vertebrates. This will provide a useful tool for understanding the genetic diversity, population structure and conservation status of G. zainaensis in the future.