Objective To investigate the safety and clinical effect of Ⅰ-stage resection of colon cancer and synchronous liver metastasis after conversion therapy.Methods The retrospective descriptive study was adopted.The clinical data of 1 patient with sigmoid cancer with synchronous multiple liver metastases who was admitted to the Zhongshan Hospital of Fudan University in April 2013 were collected.The patient was diagnosed as sigmoid cancer with multiple lymph nodes surrounding colon and 5 metastatic lesions found in liver by preoperative imaging examination,and the maximum diameters of 2 metastatic lesions were 4.5 cm and 3.6 cm.The pathological results of colonoscopy indicated adenocarcinoma.After discussion of the multidisciplinary team,liver metastatic lesions were significantly reduced through mFOLFOX6 chemotherapy combined with bevacizumab treatment,and then patient underwent Ⅰ-stage resection of colon cancer with synchronous liver metastasis by the surgical procedures of partial hepatectomy + 3D laparoscopy-assisted radical resection of sigmoid cancer.The patient received convention treatment of antibiotic,nutrition support therapy and mFOLFOX6 adjuvant chemotherapy.The changes of lesions in liver and tumor markers were observed by tumor marker test,abdominal/pelvic CT and MRI in the upper abdomen after conversion therapy.The operation time,volume of intraoptrative blood loss,number of lymph nodes dissected and vital sign were observed in the operation.The liver function,time for out-off-bed activity,time to anal exsufflation,time of drainage tube removal,duration of hospital stay,complications,results of pathological examination and recurrence and mnetastasis of tumor were observed after operation.After discharge from hospital,the patient underwent monthly tumor marker test,B ultrasound and chest X-ray examination till January 2014 and abdominaL/pelvic CT,magnetic resonance imaging (MRI) in the upper abdomen and colonoscopy every 6 months.The follow-up of outpatient examination and telephone interview was performed to detect the recurrence and metastasis of tumor up to September 2015.Results After preoperative 4-cycle chemotherapy,the diameters of 2 metastatic lesions in liver reduced to 3.2 cm and 2.0 cm,the levels of carcinoembryonic antigen(CEA) and CA19-9 (tumor marker) were reduced to 95.9 μg/L and 252.4 kU/L.The patient underwent successful Ⅰ-stage resection of colon cancer and synohronous liver metastasis.The operation time,volume of intraoperative blood loss,numbers of lymph nodes dissected and cancerous nodes were 208 minutes,250mL,14 and 1,respectively.The patient had no blood transfusion and metastasis,with the stable vital signs and good postoperative recovery.The levels of alanine transaminase (ALT) and aspartate transaminase (AST) were 1 147 U/L and 2 631 U/L at postoperative day 1,101 U/L and 37 U/L at postoperative day 7,respectively.The out-off-bed activity,anal exsufflation,drainage tube removal and discharge from hospital were occurred at postoperative day 2,3,7 and 9,respectively.No anastomotic fistula,bleeding and infection were occurred aftcr operation.The patient was diagnosed as with ulcerated sigmoid adenocarcinoma in T3N1cM1 stage (combining with liver metastasis).The patient received adjuvant therapy of mFOLFOX6 and oral capecitabine at postoperative day 40,and was followed up for 30 months with a good quality of life and without metastasis and recurrence.Conclusion Ⅰ-stage resection of colon cancer with synohronous liver metastasis can be used for initial unresectable colon cancer with liver metastasis after conversion therapy,and it is safe and feasible,with a good therapeutic effect.

A novel solid-phase extraction (SPE) adsorbent for simultaneous extraction of atrazine (ATZ) and its metabolites, deisopropylatrazine (DIA) and deethylatrazine (DEA) from environmental water samples was prepared. Polyacrylonitrile nanofibers (PAN NFs) mat was prepared via electrospinning, and was further functionalized to obtain polypyrrole modified polyacrylonitrile nanofibers (PPy-PAN NFs) mat, hydrazine modified polyacrylonitrile nanofibers (NH2-PAN NFs) mat and carboxyl modified polyacrylonitrile (COOH-PAN NFs) mat. The results showed that the adsorption capacity of COOH-PAN NFs mat was better than other three NFs mats in both static (2.0 mg/g) and dynamic (0.19 mg/g) experiments. Meanwhile, the runoff ratios of COOH-PAN NFs mat were the lowest (less than 30.0％) in the adsorption of three analytes, especially for high polar analytes, which showed that the hydrogen bond between carboxyl groups and analytes was the main interactive force. A combination of mat-based SPE and high performance liquid chromatography-diode array detection was further established for determination of 3 analytes in environmental water samples. The recoveries were 81.4％-120.3％ and the limits of detection were 0.12 ng/mL for DIA, 0.09 ng/mL for DEA and ATZ, respectively.

Objective To explore the diagnosis value of X-ray breast imaging reporting and data system (BI-RADS) combined with wire-guided localization biopsy for breast microcalcifications in impalpable breast cancer.Methods 192 palpation negative patients with 205 microcalcification lesions were detected by mammography.All lesions were classified according to BI-RADS descriptors for calcification and were categorized by the BI-RADS.The patients with BI-RADS category 4a and above underwent X-ray positioning guide wire-guided biopsy and pathological diagnosis.Results In 205 microcalcification lesions,74 (36.1％) were malignant lesions,131 (63.9 ％) were less than benign lesions.The positive predictive value of malignant breast lesions in clustered,segmental,regional linear branching calcifications were higher [83.3 ％ (5/6),100.0 ％ (11/11),100.0 ％ (1/1)],followed by clustered,linear,segmental,regional pleomorphic calcifications [55.9 ％ (38/68),50.0 ％ (1/2),40.0 ％ (8/20) and 33.3 ％ (4/12),respectively].The positive predictive values of malignant in linear branching calcifications and pleomorphic calcifications were significantly higher than those of coarse heterogeneous calcifications,amorphous or indistinct calcifications (x2 values were 34.44,51.87,16.71,29.86,all P ＜ 0.05).The linear branching calcification had the highest possibility.The proportions of malignant lesions in four different types of glands were extremely dense 40.5 ％ (30/74),heterogeneously dense 39.2 ％ (29/74),scattered areas of fibroglandular density 10.8 ％ (8/74) and fat 9.5 ％ (7/74),respectively.Conclusions BI-RADS categorization for breast microcalcification lesions can improve the detection rate of impalpable breast cancer.Linear branching calcification has higher predictive value for malignant lesions.Dense breast is the risk factors of breast cancer,which should be attached great importance.

Objective To explore diagnosis-related groups(DRGs) case mixes and development approaches for medicare expense standard fitting patients with respiratory system diseases in Sichuan province.Methods 280 717 cases of respiratory system diseases were sampled from the homepages of medical records of general hospitals in Sichuan.These cases were grouped by means of the exhaustive chi-square automatic interaction detector in the decision tree model and the medicare costs standard was derived using the relative-ratio weighting coefficient.Results The main classification nodes of respiratory diseases were age and patient clinical complexity level (PCCL).Patients were classified into 158 disease diagnosis related groups, including 122 DRGs of internal medicine and 36 DRGs in surgical medicine.The max relative-ratio weighting coefficient was 14.04 and the min one was 0.29.And the extreme inpatients' expenses can affect the identification of classification nodes, calculation of relative weighting coefficient and medicare cost standard.Conclusions Large sample size is advantageous in establishing DRGs and calculating the medicare costs standard based on relative-ratio weighting coefficient.It is however imperative to strengthen monitoring on extreme inpatients' costs and control the homepage quality of medical records.

Objective To identify PRKAR1A mutations in a pedigree with Carney's complex through clinical investigation and molecular biology research,and to summarize the genetic law,characteristics,and clinical features of this family disease.Methods The family members received a detailed medical examination and related biochemical tests.The hereditary history and clinical features were recorded.DNAs of 12 family members were extracted from blood and 9 exons and adjacent introns of PRKAR1A were sequenced.Results PRKAR1A mutation intron4 c.440+4 delG was identified in 7 family members,including the proband's patient,who presented special signs of pigmentation on the lips,buccal mucosa,and fingertips.Conclusions The deletion mutation (c.440+4del G) in intron 4 of the PRKAR1A gene was found in this family,which is possibly associated with the phenotype skin pigmentation.

Objective:To investigate the safety and efficacy of endoscopic treatment for sporadic non-ampullary descending duodenal adenoma, and to analyze high-risk endoscopic features of malignant adenoma.Methods:Data of 54 patients diagnosed as having non-ampullary descending duodenal adenoma in Nanjing Drum Tower Hospital from November 2012 to September 2019 were retrospectively studied. The patients were divided into two groups, the high-grade intraepithelial neoplasia/adenocarcinoma (HGIN/AC) group and the low-grade intraepithelial neoplasia (LGIN) group according to pathological grade. Clinical features including gender, age, size and color of lesions, therapeutic methods, complications and postoperative follow-up results were analyzed.Results:A total of 54 patients were divided into the HGIN/AC group ( n=12) and the LGIN group ( n=42). There were significant differences in size or color of lesions between the two groups (both P<0.05). All 54 patients received endoscopic treatment. Biopsy, endoscopic mucosal resection and endoscopic submucosal dissection were performed on 8, 32 and 14 cases, respectively. A small perforation was found and clipped during operation without any complications. There were 2 cases of delayed hemorrhage, and the bleeding stopped under endoscopic treatment. The mean follow-up time was 2-58 months with no recurrence. Conclusion:Endoscopic treatment is safe and effective for non-ampullary descending duodenal adenoma. Lesions of size larger than 10 mm and those with a red surface have higher malignant tendency.

Objective Construct the eukaryotic expression vector of inhibitory member of the ASPP family (iASPP) and trans-fect it into colon carcinoma cell lines SW480 and Lovo by liposome .Then observe the expression of iASPP and detect the cell apop-tosis by flow cytometry .Methods The amplified PCR product was digested and inserted into pMD19-T simple vector and sub-cloned into eukaryotic expression vector pcDNA3 .1(+ ) .The recombinant eukaryotic expression plasmid pcDNA3 .1(+ )-iASPP was transfected into colon carcinoma cell lines SW480 and Lovo by liposome ,the iASPP expression was analyzed by RT-PCR .The cell apoptosis was detected by FCM .Results The eukaryotic expression plasmid pcDNA3 .1(+ )-iASPP was constructed success-fully ,the gene squence of iASPP was consistent with that reported (gi 60457962) in GenBank .The mRNA expression levels of iASPP gene of SW480 and Lovo cell lines which transfect the positive plasmid were increased ,and the cell apoptosis rates were de-creased .Conclusion We successfully constructed the recombinant expression plasmid pcDNA 3 .1(+ )-iASPP ,and the plasmid were successfully expressed in colon carcinoma cell lines SW 480 and Lovo ,the cell apoptosis rates of those cell lines were decreased .These facts indicated that reducing the high expression of iASPP may be a new strategy to renew the abilities of P 53 tumor suppressor .

Objective To explore the impact of iodine nutrition on pregnant women before and after adjusting the iodine content in iodine salt.Methods Twelve counties (areas,cities) in Hangzhou were divided into urban,suburban and rural areas before and after adjusting the iodine content of salt.One survey spot was selected in each district and one hundred pregnant women were selected;family salt and urinary samples of each pregnant woman were collected.The levels of salt and urinary iodine were measured by the methods of picric sodium thiosulfate titrimetric (GB 13025.7-2012) and spectrophotometer (WS/T 107-2006),respectively.Results One thousand two hundred and thirty-nine and one thousand two hundred and thirty-three household salt samples were collected before and after adjusting the iodine content in iodine salt.The median of salt iodine of pregnant women (23.30 mg/kg) before adjusting the iodine content in iodine salt was lower than that after adjusting the iodine content in iodine salt (30.09 mg/kg,x2 =-4.71,P ＜ 0.01).The iodine salt coverage rate and the consumption rate of qualified iodized salt after adjusting the iodine content in iodine salt [93.92％ (1 158/1 233),93.84％ (1 157/1 233)] were higher than those before adjusting the iodine content in iodine salt [91.85％ (1 138/1 239),91.37％ (1 132/1 239),x2 =4.01,5.51,all P ＜ 0.05].The iodine salt coverage rate and the consumption rate of qualified iodized salt in urban and suburb areas after adjusting the iodine content in iodine salt [99.42％ (510/513),100.00％ (203/203),97.86％ (5021513),100.00％ (203/203)] were higher than those before adjusting the iodine content in iodine salt [86.71％ (450/519),98.00％ (196/200),77.26％ (401/519),85.00％ (170/200)],but the iodine salt coverage rate and the consumption rate of qualified iodized salt in rural area before adjusting the iodine content in iodine salt [94.62％ (492/520),86.92％ (452/520)] were higher than those after adjusting the iodine content in iodine salt [85.69％(443/517),76.98％ (398/517),x2=64.22,2.32,100.02,32.90,23.31,17.33,all P ＜ 0.05].One thousand two hundred and thirty-four and one thousand two hundred and thirty-one household urine samples were collected before and after adjusting the iodine content in iodine salt.The median of urinary iodine (MUI,114.80 μg/L) of pregnant women after adjusting the iodine content in iodine salt was lower than that before adjusting the iodine content in iodine salt (168.60 μg/L,x2 =36.92,P ＜ 0.01).The MUIs of pregnant women in urban,suburban,and rural areas (171.30,170.20 and 162.40 μg/L) before adjusting the iodine content in iodine salt were higher than those after adjusting the iodine content in iodine salt (101.00,149.48 and 119.90 μg/L,x2 =-7.78,-2.63,-6.28,all P ＜ 0.01).The differences of urinary iodine between groups were statistically significant in urban,suburban and rural areas after adjusting the iodine content in iodine salt (x2 =32.86,P ＜ 0.01),the MUI of pregnant women in urban areas was lower than those in the suburban and rural areas (x2 =6.70,8.13,all P ＜ 0.05).Conclusions After adjusting the iodine content of salt in Hangzhou,the iodine-nutrition level of pregnant women is decreased.But the consumption rates of qualified iodized salt and the MUIs in urban,suburb,rural areas are different,so the coverage of iodized salt at household level needs to be enhanced and the health education should be highlighted.

Objective: To summarize the therapeutic effect of free deep inferior epigastric perforator (DIEP) flap and anterolateral thigh perforator (ALTP) flap in repairing skin and soft tissue defects in chest wall tumor resection.Methods: One old male patient with malignant fibrous histiocytoma of chest wall in China-Japan Union Hospital received operation,and the tumor was extendedly resected.The remaining chest wall defects were 10 cm×10 cm and 18 cm×14 cm,respectively.Free DIEP and ALTP flaps were used to repair the defects,and vascular pedicle was anastomosed with internal mammary artery and thoracic lateral artery,respectively.Results:After operation,the donor area was sutured directly,and two flaps survived with good appearance.The skin of ALTP flap was flatter than that of DIEP flap,and the texture and color of skin were close to those around chest wall.Conclusion:Free DIEP and ALTP flaps are ideal choice for repairing skin and soft tissue defects after resection in the male patient with chest wall tumor.

Objective To evaluate the efficacy of unilateral atlanto-axial transpedicle screw fixation plus iliac bone graft for treatment of unstable atlas fractures combined with unilateral pedicle dysplasia or comminuted fractures.Methods A retrospective case control study was made on 44 patients with unstable atlas fractures surgically treated between January 2012 to June 2016.Unilateral atlanto-axial transpedicle screw fixation combined with iliac bone graft was performed for 22 patients combined with unilateral pedicle dysplasia or comminuted fractures in Group A[15 males,seven females;(37.5 ± 13.4)years],and bilateral atlanto-axial transpedicle screw fixation combined with iliac bone graft was performed for 22 patients without unilateral pedicle dysplasia or comminuted fractures in Group B [14 males,eight females;(38.1 ± 13.3)years].Between-group differences were compared concerning operation time,intraoperative blood loss,length of hospital stay,success rate of screw placement,postoperative atlantoaxial stability,surgery-related complications,visual analog scale (VAS),Japanese orthopedic association score (JOA) and bone fusion.Results Mean duration of follow-up was 28.4 months (range,14-48 months).In Group A,operation time was (123.4 ± 18.2) min,blood loss was (218.5 ± 80.2) ml,hospital stay was (7.1 ± 1.0)d,success rate of screw placement was 100％,postoperative atlanto-axial stability of all patients was obtained,and no complications occurred.In Group B,operation time was (173.4 ± 12.4) min,blood loss was (318.2 ± 61.7) ml,hospital stay was (7.2 ± 0.8) d,success rate of screw placement was 100％,postoperative atlanto-axial stability of all patients was obtained,and no complications occurred.There were significant differences in operation time and blood loss between the two groups (P ＜0.01),while not in hospital stay,success rate,postoperative atlant-oaxial stability,complication incidence,VAS and JOA (P ＞ 0.05).Conclusion Both treatments are effective,but unilateral atlanto-axial transpedicle screw fixation combined with iliac bone graft is associated with relatively shorter operation time and less blood loss and hence is considered as a better choice for treatment of unstable atlas fractures.