Objective:To investigate the application value of antegrade splenic superior region dissection first in laparoscopic total gastrectomy of obesity gastric cancer.Methods:The retrospective and descriptive study was conducted. The clinicopathological data of 21 obesity patients with gastric cancer who underwent laparoscopic total gastrectomy in Renji Hospital of Shanghai Jiaotong University School of Medicine from July 2018 to October 2023 were collected. There were 16 males and 5 females, aged (58±13)years. All 21 patients underwent laparoscopic total gastrec-tomy with antegrade splenic superior region dissection first. Observation indicators: operation time, volume of intraoperative blood loss, laparotomy conversion, intraoperative splenic hemorrhage or gastric hemorrhage, lymph node dissection, time to postoperative first flatus, time to postoperative initial liquid food intake, duration of postoperative hospital stay, postoperative complication. Measure-ment data with normal distribution were represented as Mean± SD, and count data were expressed as absolute numbers. Results:All 21 patients underwent laparoscopic total gastrectomy success-fully, with the operation time of (283±47)minutes, time for splenogastric ligament and vascular manage-ment of (34±12)minutes, volume of intraoperative blood loss of (143±86)mL, and no laparotomy conversion. There was no intraoperative splenic hemorrhage or gastric haemorrhage. The total number of lymph node dissected in 21 patients was 375, with the number of lymph node dissected as (21±9)per case. Time to postoperative first flatus, time to postoperative initial liquid food intake and duration of postoperative hospital stay in 21 patients were (3.1±0.7)days, (4.0±0.8)days and (10.1±3.0)days, respectively. There were 2 patients with postoperative complications, including 1 case of incision infection and 1 case of lung infection. The 2 patients with postoperative com-plications were recovered and discharged after conservative treatment. There was no death during the postoperative 30 days.Conclusion:The application of antegrade splenic superior region dissec-tion first in laparoscopic total gastrectomy is safe and feasible, which can reduce surgical difficulty.

Purpose: This study examined the diagnostic value of high-frequency ultrasound (HFUS) features in differentiating between benign and malignant skin lesions. Methods: A total of 1,392 patients with 1,422 skin lesions who underwent HFUS examinations were included in an initial dataset (cohort 1) to identify features indicative of malignancy. Qualitative clinical and HFUS characteristics were recorded for all lesions. To determine which HFUS and clinical features were suggestive of malignancy, univariable and multivariable logistic regression analyses were employed. The diagnostic performance of HFUS features combined with clinical information was evaluated. This assessment was validated using internal data (cohort 2) and multicenter external data (cohort 3). Results: Features significantly associated with malignancy included age above 60 years; lesion location in the head, face, and neck or genital regions; changes in macroscopic appearance; crawling or irregular growth pattern; convex or irregular base; punctate hyperechogenicity; blood flow signals; and feeding arteries. The area under the receiver operating characteristic curve, sensitivity, and specificity of HFUS features combined with clinical information were 0.946, 92.5%, and 86.9% in cohort 1; 0.870, 93.1%, and 80.8% in cohort 2 (610 lesions); and 0.864, 86.2%, and 86.6% in cohort 3 (170 lesions), respectively. However, HFUS is not suitable for evaluating lesions less than 0.1 mm in thickness or lesions exhibiting surface hyperkeratosis. Conclusion In a clinical setting, the integration of HFUS with clinical information exhibited good diagnostic performance in differentiating malignant and benign skin lesions. However, its utility was limited in evaluating extremely thin lesions and those exhibiting hyperkeratosis.

Purpose: This study examined the diagnostic value of high-frequency ultrasound (HFUS) features in differentiating between benign and malignant skin lesions. Methods: A total of 1,392 patients with 1,422 skin lesions who underwent HFUS examinations were included in an initial dataset (cohort 1) to identify features indicative of malignancy. Qualitative clinical and HFUS characteristics were recorded for all lesions. To determine which HFUS and clinical features were suggestive of malignancy, univariable and multivariable logistic regression analyses were employed. The diagnostic performance of HFUS features combined with clinical information was evaluated. This assessment was validated using internal data (cohort 2) and multicenter external data (cohort 3). Results: Features significantly associated with malignancy included age above 60 years; lesion location in the head, face, and neck or genital regions; changes in macroscopic appearance; crawling or irregular growth pattern; convex or irregular base; punctate hyperechogenicity; blood flow signals; and feeding arteries. The area under the receiver operating characteristic curve, sensitivity, and specificity of HFUS features combined with clinical information were 0.946, 92.5%, and 86.9% in cohort 1; 0.870, 93.1%, and 80.8% in cohort 2 (610 lesions); and 0.864, 86.2%, and 86.6% in cohort 3 (170 lesions), respectively. However, HFUS is not suitable for evaluating lesions less than 0.1 mm in thickness or lesions exhibiting surface hyperkeratosis. Conclusion In a clinical setting, the integration of HFUS with clinical information exhibited good diagnostic performance in differentiating malignant and benign skin lesions. However, its utility was limited in evaluating extremely thin lesions and those exhibiting hyperkeratosis.

Purpose: This study examined the diagnostic value of high-frequency ultrasound (HFUS) features in differentiating between benign and malignant skin lesions. Methods: A total of 1,392 patients with 1,422 skin lesions who underwent HFUS examinations were included in an initial dataset (cohort 1) to identify features indicative of malignancy. Qualitative clinical and HFUS characteristics were recorded for all lesions. To determine which HFUS and clinical features were suggestive of malignancy, univariable and multivariable logistic regression analyses were employed. The diagnostic performance of HFUS features combined with clinical information was evaluated. This assessment was validated using internal data (cohort 2) and multicenter external data (cohort 3). Results: Features significantly associated with malignancy included age above 60 years; lesion location in the head, face, and neck or genital regions; changes in macroscopic appearance; crawling or irregular growth pattern; convex or irregular base; punctate hyperechogenicity; blood flow signals; and feeding arteries. The area under the receiver operating characteristic curve, sensitivity, and specificity of HFUS features combined with clinical information were 0.946, 92.5%, and 86.9% in cohort 1; 0.870, 93.1%, and 80.8% in cohort 2 (610 lesions); and 0.864, 86.2%, and 86.6% in cohort 3 (170 lesions), respectively. However, HFUS is not suitable for evaluating lesions less than 0.1 mm in thickness or lesions exhibiting surface hyperkeratosis. Conclusion In a clinical setting, the integration of HFUS with clinical information exhibited good diagnostic performance in differentiating malignant and benign skin lesions. However, its utility was limited in evaluating extremely thin lesions and those exhibiting hyperkeratosis.

Purpose: This study examined the diagnostic value of high-frequency ultrasound (HFUS) features in differentiating between benign and malignant skin lesions. Methods: A total of 1,392 patients with 1,422 skin lesions who underwent HFUS examinations were included in an initial dataset (cohort 1) to identify features indicative of malignancy. Qualitative clinical and HFUS characteristics were recorded for all lesions. To determine which HFUS and clinical features were suggestive of malignancy, univariable and multivariable logistic regression analyses were employed. The diagnostic performance of HFUS features combined with clinical information was evaluated. This assessment was validated using internal data (cohort 2) and multicenter external data (cohort 3). Results: Features significantly associated with malignancy included age above 60 years; lesion location in the head, face, and neck or genital regions; changes in macroscopic appearance; crawling or irregular growth pattern; convex or irregular base; punctate hyperechogenicity; blood flow signals; and feeding arteries. The area under the receiver operating characteristic curve, sensitivity, and specificity of HFUS features combined with clinical information were 0.946, 92.5%, and 86.9% in cohort 1; 0.870, 93.1%, and 80.8% in cohort 2 (610 lesions); and 0.864, 86.2%, and 86.6% in cohort 3 (170 lesions), respectively. However, HFUS is not suitable for evaluating lesions less than 0.1 mm in thickness or lesions exhibiting surface hyperkeratosis. Conclusion In a clinical setting, the integration of HFUS with clinical information exhibited good diagnostic performance in differentiating malignant and benign skin lesions. However, its utility was limited in evaluating extremely thin lesions and those exhibiting hyperkeratosis.

Purpose: This study examined the diagnostic value of high-frequency ultrasound (HFUS) features in differentiating between benign and malignant skin lesions. Methods: A total of 1,392 patients with 1,422 skin lesions who underwent HFUS examinations were included in an initial dataset (cohort 1) to identify features indicative of malignancy. Qualitative clinical and HFUS characteristics were recorded for all lesions. To determine which HFUS and clinical features were suggestive of malignancy, univariable and multivariable logistic regression analyses were employed. The diagnostic performance of HFUS features combined with clinical information was evaluated. This assessment was validated using internal data (cohort 2) and multicenter external data (cohort 3). Results: Features significantly associated with malignancy included age above 60 years; lesion location in the head, face, and neck or genital regions; changes in macroscopic appearance; crawling or irregular growth pattern; convex or irregular base; punctate hyperechogenicity; blood flow signals; and feeding arteries. The area under the receiver operating characteristic curve, sensitivity, and specificity of HFUS features combined with clinical information were 0.946, 92.5%, and 86.9% in cohort 1; 0.870, 93.1%, and 80.8% in cohort 2 (610 lesions); and 0.864, 86.2%, and 86.6% in cohort 3 (170 lesions), respectively. However, HFUS is not suitable for evaluating lesions less than 0.1 mm in thickness or lesions exhibiting surface hyperkeratosis. Conclusion In a clinical setting, the integration of HFUS with clinical information exhibited good diagnostic performance in differentiating malignant and benign skin lesions. However, its utility was limited in evaluating extremely thin lesions and those exhibiting hyperkeratosis.

Objective: To establish a method for rapid determination of 47 volatile organic compounds in the air of workplace using portable gas chromatography-mass spectrometer(GC-MS). Methods: The mixed standard gas with different concentration levels was made by using the static gas distribution method with the high purity nitrogen as dilution gas. The samples were injected into the GC-MS by a hand-held probe. Retention time and characteristic ion were used for qualitative analysis,and the internal standard method was usd for quantitation. Results: The 47 poisonous substances were separated and determined well. The linear range of this method was 0.2-16.0 mg/m³,and the relative standard deviation of 45 volatile ovganic compounds was 3.8%-15.8%. The average recovery was 79.3%-119.0%. Conclusion The method is simple,accurate,sensitive,has good separation effect,short analysis period, can be used for qualitative and quantitative analysis of volatile organic compounds in the workplace, and also supports the rapid identification and detection of occupational hazards.

Under the premise of radical resection in the treatment, it is of great significance to preserve partial gastric function so that the early gastric cancer (EGC) patients' postoperative quality of life (QOL) can be improved. In the patients with EGC in the upper third of the stomach, the emphasis is on the prevention of reflux esophagitis caused by bile and gastric juice reflux. Pylorus-preserving gastrectomy (PPG) is applicable to the patients with EGC in the middle third of the stomach. In the patients with EGC in the lower third of the stomach, distal gastrectomy (DG) is performed in general. Various anastomosis ways are applied to reduce the negative impact of pylorus resection after DG. Furthermore, it should also be considered that reasonable vagal nerves preservation and lymph node dissection are both important for function preserving gastrectomy of EGC. Rational use of laparoscopy-assisted gastrectomy has advantages of lower invasiveness, faster recovery, etc. And the amplification effect of laparoscope can contribute to preserving nerves and gastric function.
Esophagitis, Peptic ; prevention & control ; Gastrectomy ; methods ; Gastroenterostomy ; Gastroesophageal Reflux ; prevention & control ; Humans ; Laparoscopy ; Lymph Node Excision ; Organ Sparing Treatments ; Postoperative Period ; Pylorus ; surgery ; Quality of Life ; Stomach Neoplasms ; surgery ; Vagus Nerve

A method was developed for the determination of N-acetyl-S-( N-methylcarbamoyl ) cysteine ( AMCC) in human urine by online solid-phase extraction ( SPE )-high performance liquid chromatography ( HPLC ) . The separation of AMCC from the urine matrix was performed on AmoniPac PA Solid phase Extraction ( SPE ) column with 5 mmol/L KH2 PO4 as the mobile phase by left pump. Then the time was controlled to switch the valve to make only the section of sample containing AMCC transferred into the analytic column-Acclaim PAⅡ C18 . The determination was performed using gradient elution of 0. 1% H3 PO4 (containing 5% acetonitrile) and acetonitrile by right pump. The results showed that AMCC present good linear correlation in the range of 1 . 0-100 mg/L with a correlation coefficient of above 0 . 999 , the quantitation limit of the method was 0. 2 mg/L (with the sample inject volume =10 μL), the recoveries of spiked samples were in the range of 82 . 9%-85 . 9%, and the relative standard deviation ( n=6 ) of retention time and peak area were 0. 2% and 4. 0% respectively. Compared with offline SPE-HPLC, the proposed method was convenient, environmentally friendly, efficient and stable, and feasible for the detection of AMCC in 7 human urine samples.

In order to improve the control rate of risk factors of chronic disease, it is developed a status control method of risk factor and its mobile monitor. The monitor uses 32 bit RISC microprocessor of S3C2410X as a controller based on ARM920T core, and MC35i cellular engine GSM/GPRS supported by SIEMENS as the communication unit. The proving tests show that the physical activity, diet, smoking and alcohol of the controlled people can be controlled using the status control method, and the monitor plays a key role in the method. The conclusion is that status control method and mobile monitor can become an alternation method and technology for the risk factor control of chronic disease.
Chronic Disease ; prevention & control ; Equipment Design ; Humans ; Monitoring, Physiologic ; instrumentation ; methods ; Risk Factors