Objective To evaluate the value of enhanced CT scan in differential diagnosis of thyroid neoplasm.Methods 27 cases of thyroid neoplasm including 18 cases of thyroid adenoma and 9 cases of thyroid papillary carcinoma proved by operation and pathology were retrospectively analyzed.Results In 18 cases of thyroid adenoma,there were 12 cases with well defined enhanced ring and 6 cases with enhanced nodule in adenoma.In 9 cases of thyroid papillary carcinoma,there were no complete enhanced ring on the wall,and 4 cases with enhanced nodule on the wall,there were 7 cases with fine granular or plague like calcifications and 4 cases with sign of surrounding structures involved.Conclusion In CT diagnosis of thyroid neoplasm,enhanced scan is necessary for characterization of the tumors.Invasion of surrounding structures is a characteristic sign of malignancy.Nodules enhancement of the tumor wall accompanied with granular calcification is the signs of thyroid papillary carcinoma,tumor sharp wall is the sign of adenoma.

Bioinformatics is an interdisciplinary science that combines the tools of mathematics, computer science, and biology to clarify and explore the biological implications of large amounts of biological data. With the continuous development of genome sequencing technology, a large number of biological data has been generated, and mining of the biological significance contained in big data has become one of the main tasks that need to be solved urgently. This article summarizes the risk prediction models for hepatocellular carcinoma (HCC) based on feature genes, so as to provide new perspectives for early identification, prognosis, and treatment optimization of HCC.

Objective: To investigate the relationship between the epidemic of Coronavirus Disease in 2019 (COVID-19) in China and population migration from Wuhan before the city implemented strict migration restrictions. Methods: We collected the cumulative number of confirmed cases with COVID-19 up to January 31, 2020 from the official website of the health administrative departments, and information on population migration out of Wuhan during January 10, 2020 and January 24, 2020, approximately half months prior to the implementation of strict migration restrictions by the city, from Baidu population-migration big data platform. Population migration data were provided for the top 100 cities in the form of percentage values, calculated as the number of migrants from Wuhan into these cities divided by the total number of migrants out of Wuhan during the same period multiplied by 100%. The two-independent sample non-parametric Wilcoxon rank-sum test was used to compare the distribution of cumulative number of cases between the top 100 cities and the remaining 205 non-top 100 cities of China. The relationship between the cumulative number of cases and the percentage of migrants from Wuhan into the top 100 cities were further assessed by Pearson correlation and by multiple linear regression with adjustment for population size, population density, and GDP per capita. Results: The top 100 cities accounted for 91.6% of total migrants out of Wuhan, and the top 14 cities were all in Hubei province. There were a total of 5,869 cases in the top 100 cities, with a median (interquartile range) of 21.5 (12~55) cases, whereas in the 205 non-top 100 cities there were a total of 1,063 cases, with a median (interquartile range) of 4 (2~7) cases. The median cumulative number of cases differed significantly between the two types of cities (P<0.001). Among the top 100 cities, there was a strong correlation between the percentage of migrants from Wuhan and the cumulated number of cases (Pearson correlation coefficient=0.92), and for every 1 percentage point increase in migrants from Wuhan the cumulative number of cases increased by approximately 42 (95%CI, 39 to 45). The number of cumulative number of cases in Wenzhou and Chongqing was detected as potential outliers in regression diagnosis (P<0.001, corresponding standardized residuals were 5.2 and 3.5, respectively), suggesting that the number of cases in these two cities was substantially higher than others with similar amount of migrants from Wuhan. Conclusions There is a strong positive association between the percentage of migrants from Wuhan and the epidemic status of COVID-19 infections in cities in China.

[Purpose]To analyze the epidemic characteristics and survival trends of upper gas-trointestinal cancer in Fujian cancer registration areas from 2011 to 2020.[Methods]Cancer regi-stration data in Fujian Province was collected to calculate the crude incidence and mortality rate,age-standardized incidence/mortality rates by Chinese standard population(ASIRC,ASMRC)and by world standard population(ASIRW,ASMRW)and cumulative rate of 0～74 years old of upper gastrointestinal cancer(including esophageal and gastric cancers)as well as the corresponding temporal trends from 2011 to 2020.Using the Joinpoint software to calculate the annual percent-age change(APC)and average annual percentage change(AAPC)to analyze the trends.The data were divided into two time periods(2011-2015 and 2016-2020)to compare the 5-year relative survival rates of upper gastrointestinal cancer.[Results]From 2011 to 2020,there were 26 286 new cases of upper gastrointestinal cancer in Fujian cancer registration areas,accounting for 20.28％of all malignant tumors.The incidence rate,ASIRC and ASIRW of upper gastrointestinal cancer was 56.52/105,42.55/105,and 42.75/105,respectively,and the cumulative incidence rate(0～74 years old)was 5.32％.Incidence of upper gastrointestinal cancer was higher in men than that in women.The incidence of upper gastrointestinal cancer showed an decreasing trend from 2011 to 2020,with an AAPC of ASIRC of-4.7％(95％CI:-6.6％～-2.9％).There were 11 680 new cases of esophageal cancer in Fujian cancer registration areas,the crude incidence,ASIRC,ASIRW and cumulative incidence(0～74 years old)of esophageal cancer were 25.12/105,18.67/105,18.97/105,and 2.32％,respectively.There were 14 606 gastric cancer new cases in Fujian cancer registration areas during 2011-2020,the crude mortality,ASMRC,ASIRW and cumulative mortality(0～74 years old)of gastric cancer were 31.41/105,23.88/105,23.78/105,and 3.00％,respectively.There were 20 133 upper gastrointestinal cancer deaths during 2011-2020 in Fujian cancer registration areas,accounting for 26.05％of all cancer deaths.The crude mortality,ASMRC and ASMRW of upper gastrointestinal cancer was 43.29/105,31.95/105,and 31.89/105,respectively,the cumu-lative mortality rate(0～74 years old)was 3.84％.The mortality of upper gastrointestinal cancer was higher in men than that in women.The mortality rate of upper gastrointestinal cancer showed a trend of first increase and then decrease,with an APC of 3.5％(95％CI:-0.5％～11.3％)from 2011 to 2014 and-5.2％(95％CI:-8.4％～3.7％)from 2014 to 2020.There were 9 643 deaths of esophageal cancer during 2011-2020 in Fujian cancer registration areas.The crude mortality,ASMRC,ASMRW and cumulative mortality rate(0～74 years old)of esophageal cancer was 20.74/105,15.20/105,15.35/105,and 1.83％,respectively.There were 10 490 deaths of gastric cancer dur-ing 2011-2020 in Fujian cancer registration areas.The crude mortality,ASMRC,ASMRW and cumulative mortality rate(0～74 years old)of gastric cancer was 22.56/105,16.75/105,16.54/105,and 2.00％,respectively.The 5-year relative survival rate for upper gastrointestinal cancer patients during 2011-2015 and 2016-2020 were 24.74％(95％CI:23.92％～25.56％)and 25.49％(95％CI:24.65％～26.34％),respectively.The 5-year relative survival rate for esophageal cancer patients during 2011-2015 and 2016-2020 were 17.15％(95％CI:16.10％～18.22％)and 18.72％(95％CI:17.59％～19.88％),respectively.The 5-year relative survival rate for gastric cancer patients during 2011-2015 and 2016-2020 were 30.90％(95％CI:29.71％～32.10％)and 30.76％(95％CI:29.56％～31.97％),respectively.There was a decreasing trend in 5-year survival of upper gastroin-testinal patients with increasing age,with lower survival rate in patients over 65 years old.[Con-clusion]The incidence and mortality of upper gastrointestinal cancer in Fujian cancer registration areas showed an overall decreasing trend,and the 5-year relative survival rate improved slightly,while the disease burden of upper gastrointestinal cancer remains heavy.Incidence and mortality of upper gastrointestinal cancer of men were higher than those of women,and the elderly patients with upper gastrointestinal cancer had a poorer prognosis.Fujian should pay close attention to the prevention and control of gastric cancer among key groups,and strengthen its comprehensive pre-vention and control ability of upper gastrointestinal cancer.

[Purpose]To analyze the preliminary screening and follow-up results of the early diag-nosis and treatment program for upper gastrointestinal cancer in rural areas of Fujian Province from 2013 to 2022.[Methods]Screening data from the early diagnosis and treatment program for upper gastrointestinal cancer in Fujian Province from 2013 to 2022 were collected and organized.The positive case detection rate,early diagnosis rate,and treatment rate of the screening population were calculated.SPSS 22.0 software was used to test the trend Chi-square test of the annual changes in detection rate,early diagnosis rate and treatment rate.The Chi-square test was used to compare the detection rate and early diagnosis rate between different groups.[Results]From 2013 to 2022,a total of 26 823 screenings and follow-ups were completed in Fujian Province,with de-tection rate,early diagnosis rate,and treatment rate of 1.41％,56.20％,and 92.61％,respec-tively.The early diagnosis rate showed an increasing trend from 2013 to 2022(P＜0.05).The initial screening detected rate and early diagnosis rate were 1.38％and 55.59％,respectively,while fol-low-up detection rate and early diagnosis rate were 5.36％and 75.00％.The detection rates for esophagus,cardia,and stomach cases were 0.70％,0.15％,and 0.58％,respectively,with early diagnosis rates of 64.86％,53.66％,and 46.41％,respectively.The differences in detection rates and early diagnosis rates for each site were statistically significant(all P＜0.05).[Conclusion]With the development of early diagnosis and treatment of upper gastrointestinal cancer in rural areas of Fujian Province and the improvement of residents'awareness of cancer prevention,the detection rate and early diagnosis rate of upper gastrointestinal cancer in Fujian Province have been im-proved,which plays an important role in improving the survival rate of patients.