Fibroadenoma of the Ectopic Axillary Breast Tissue: Sonographic Appearances

Ectopic breast tissue is reported to occur in 0.4% - 6% of women. Breast neoplasms may develop in ectopic breast tissue, as in eutopic breast tissue. The most frequent condition in ectopic breast is breast cancer. Fibroadenomas of ectopic breast tissue have been reported, but are rare. We report two cases of fibroadenomas of ectopic axillary breast tissues. The sonographic appearance of the nodules was spherical and hypoechoic. We found the component of breast tissue near the nodule. It is important to diagnose fibroadenomas of ectopic breast tissue before a histologic examination.

Integrated Optimization Scheduling Model for Ship Outfitting Production with Endogenous Uncertainties

Ship outfitting is a key process in shipbuilding.Efficient and high-quality ship outfitting is a top priority for modern shipyards.These activities are conducted at different stations of shipyards.The outfitting plan is one of the crucial issues in shipbuilding.In this paper,production scheduling and material ordering with endogenous uncertainty of the outfitting process are investigated.The uncertain factors in outfitting equipment production are usually decision-related,which leads to difficulties in addressing uncertainties in the outfitting production workshops before production is conducted according to plan.This uncertainty is regarded as endogenous uncertainty and can be treated as non-anticipativity constraints in the model.To address this problem,a stochastic two-stage programming model with endogenous uncertainty is established to optimize the outfitting job scheduling and raw material ordering process.A practical case of the shipyard of China Merchants Heavy Industry Co.,Ltd.is used to evaluate the performance of the proposed method.Satisfactory results are achieved at the lowest expected total cost as the complete kit rate of outfitting equipment is improved and emergency replenishment is reduced.

Study protocol: A national cross-sectional study on psychology and behavior investigation of Chinese residents in 2023

Introduction:This study protocol specifies the primary research line and theoretical framework of the 2023 Survey of the Psychology and Behavior of the Chinese Population.It aims to establish a consistent database of Chinese residents'psychological and behavioral surveys through multi-center and large-sample cross-sectional surveys to provide robust data support for developing research in related fields.It will track the public's physical and psychological health more comprehensively and systematically.Methods:The study was conducted from June 20,2023 to August 31,2023,using stratified and quota sampling methods.A total of 150 cities across 800 communities/villages were surveyed,selected from China(Despite extensive coordination,we have been unable to contact our counterparts in the Taiwan region of China to obtain relevant statistical data).The questionnaires were distributed to the public one-on-one and face-to-face by trained surveyors.The questionnaires included basic information about the individual,personal health status,basic information about the family,the social environment in which the individual lives,psychological condition scales,behavioral level scales,other scales,and attitudes towards topical social issues.Supervisors conducted quality control during the distribution process and returned questionnaires,logically checked and cleaned for data analysis.Discussion:Data collection has been finished,and scientific outputs based on this data will support the development of health promotion strategies in China and globally.In the aftermath of the pandemic,it will guide policymakers and healthcare organizations to improve their existing policies and services to maximize the physical and mental health of the Chinese population.Trial Registration:This study was filed in the National Health Security Information Platform(Record No.:MR-37-23-017876)and officially registered in the China Clinical Trials Registry(Registration No.:ChiCTR2300072573).