Murraystern1080

characterize the pathophysiology of this disease.Objective To analyze the clinical manifestations, radiographic characteristics and prognosis of Mycobacterium xenopi pulmonary disease, in order to improve diagnosis and treatment of the disease. Methods Using "Mycobacterium xenopi, pulmonary disease" as the search term, from February 15, 2007 to February 21, 2021, a total of 1 264 cases were retrieved in the PubMed database. In the Wanfang database, using "Mycobacterium xenopi, pulmonary disease" as the search term, from February 15, 2007 to February 21, 2021, no related document was retrieved. In the CNKI database, "Mycobacterium xenopi, pulmonary disease" was used as the search term, and one relevant case report was retrieved, but did not meet the diagnostic criteria of Mycobacterium xenopi pulmonary disease issued by American Thoracic Society in 2007. The 1 264 cases from the literature and 3 cases of our institution were used for review. Results Our 3 cases were elderly males complaining of cough and expectoration, and had underlying lung diseases. The imaging examination showed cavitary lesions. All of them had positive sputum smear for acid-fast bacillus and negative Xpert MTB/RIF examination. Mycobacterium xenopi was isolated at least 2 times from sputum samples. Although prescribed with chemotherapy, case 1 and case 2 died 4 years and 2 years later, respectively, after the diagnosis. Case 3 got sputum conversion, symptom improvement and radiographic responses after 30-month chemotherapy. Conclusions The clinical manifestations of Mycobacterium xenopi pulmonary disease are atypical. For patients with positive sputum smear for acid-fast bacillus and negative Xpert MTB/RIF examination and conventional mycobacterial culture, Mycobacterium xenopi pulmonary disease should be considered. The disease deserves further attention from clinicians due to poor prognosis.Objective To analyze the pathogenesis, clinical manifestations, diagnosis, treatment and prognosis of pulmonary malignant perivascular epithelioid cell tumor (PEComa) with adenocarcinoma. Methods In August 2020, the Department of Pathology, Dongguan People's Hospital of Southern Medical University, diagnosed a case of pulmonary malignant PEComa mixed with adenocarcinoma. The clinical data, pathological diagnosis, treatment plan and prognosis of the patient were analyzed, and the literature was reviewed. Firstly, "malignant perivascular epithelioid cell tumor"+" Pulmonary "+"adenocarcinoma" was used to search CNKI and Wanfang Medical Database, but no relevant reports were found. Then, we changed the search term as "pulmonary malignant perivascular epithelioid cell tumor", and search for PubMed, Embase, Web of Science and Cochrane by combining the subject terms with "pulmonary malignant perivascular epithelioid cell tumor" and "PEComa" as subtopics. The language was Chinese or English and the search deadline waignant PEComa is rare. It is the first report of the same mass with lung primary adenocarcinoma. HexamethoniumDibromide The tumor progresses rapidly. Complete surgical resection of the lesion and lymph node dissection are more appropriate treatment strategies, supplemented by postoperative chemotherapy and targeted therapy. For cases diagnosed as pulmonary PEComa, long term follow-up should be performed, even if the pathological diagnosis is benign.Objective Takayasu's arteritis involving the pulmonary artery (PTA) is uncommon, and those with pulmonary hypertension (PH) are even rarer. This study investigated the clinical features and CT findings in PTA patients with PH. Methods A total of 40 PTA patients were retrospective selected in the First Hospital of Air Force Medical University from January 2008 to January 2018. There were 14 PTA patients with PH, including 3 male and 11 female cases, aged from 18 to 53 (29.7±9.4) years, as the study group (PTA+PH group). There were 26 PTA patients without PH, including 4 males and 22 females, aged 15-52 (28.9±8.5) years, as the control group (PTA group). The Chi-square or Fisher's test, T test of two independent samples and Mann-Whitney U rank sum test were used to compare the general information, symptoms, signs, laboratory examination data, right ventricular and pulmonary artery measurement data, and pulmonary artery CT findings between the two groups. Results Compared with the PTA group, the patients in the PTA+PH group had longer disease duration, fewer active cases, more shortness of breath, chest distress and lower limb edema, lower blood oxygen partial pressure (PaO2) and lower ESR (all P less then 0.05). The width of right atrium and right ventricle in PTA+PH group was greater than that in PTA group (all P less then 0.05). The main CT findings of the involved pulmonary artery included lumen stenosis (39 cases, 97.5%), lumen occlusion (16 cases, 40%), wall thickening (9 cases, 22.5%), and lumen dilation (2 cases, 5.0%). Patients in the PTA+PH group had less wall thickening and mild lumen stenosis ( less then 50%), more severe lumen stenosis (≥50%) and occlusion than those in the PTA group (all P less then 0.05). Conclusions PTA patients with PH showed certain characteristics in clinical, laboratory and CT findings, which may be correlated to the stage of the disease duration, the severity, and the prognosis.Objective To analyze retrospectively the clinical characteristics of pathologically confirmed benign pulmonary nodules post-surgery, and therefore to provide evidence for the diagnosis of benign pulmonary nodules. Methods 288 cases of pulmonary nodules were selected in the Ruijin Hospital from 1st January 2017 to 31st October 2019. All the lesions of these patients were confirmed by surgery and had definite pathological diagnosis. The clinical data were collected, including demography, clinical data, radiological features. link2 Features that indicated benign pulmonary nodules were summarized. Results The main etiologies of benign pulmonary nodules were granulomas, hamartomas, cryptococcus infection, organizing pneumonia and non-specific inflammation. In our cohort, we found that the radiological characteristics of benign nodules were single, solid, less than 10 mm in average diameter, with well-defined margins, absence of vacuole sign or vascular convergence , and negative functional imaging. Conclusion The most common etiologies of post-surgical benign nodules were granulomas, hamartomas, and cryptococcus infection, characterized by being single, solid and with well-defined margins. Caution should be taken before considering surgery for such nodules.Objective To evaluate the clinical value of a pulmonary tuberculosis CT diagnostic model based on deep learning convolutional neural networks (CNN). Methods From March 2017 to March 2018,a total of 1 764 patients with positive sputum for tuberculous bacterium and had received high-resolution chest CT scan in radiology department of Hebei province chest hospital were enrolled. Among them, 937 were male, and 827 were female, aging from 17-73 years (average 38.4). A total of 20 139 CT images (17 kinds of image features) classified by 4 radiologists were used as training dataset to create a tuberculosis CT CNN diagnostic model. The top 5 image features in training set were infiltrative pulmonary tuberculosis, cavitary pulmonary tuberculosis, pleural thickening, caseous pneumonia and pleural effusion. A total of 302 images were randomly selected from the marked images as testing dataset. The diagnosis of 2 senior radiologists was taken as "golden standard". The differences of sensitivity and accuracy in CT diagnos78% and FPI value was 2.48, it reached the highest diagnostic efficiency. The classification error of CNN diagnostic models was mainly confusion of fiber stripe components, cavitary pulmonary tuberculosis, caseous pneumonia and infiltrative pulmonary tuberculosis. Conclusions The CNN-based pulmonary tuberculosis CT diagnostic model exhibited high sensitivity and accuracy (95.49% and 90.40% respectively). It could assist radiologists in CT diagnosis of pulmonary tuberculosis and deserve further clinical application.Objective To evaluate the diagnosic performance of a novel Mycobacterium tuberculosis (MTB) specific T-cell based assay for tuberculosis, which targets the mRNA detection of interferon gamma-induced protein 10 (IP-10). Methods Suspected tuberculosis patients were prospectively and consecutively recruited in Beijing Chest Hospital between March 2018 and November 2019, and individuals with lower risk of MTB infection were also recruited. link3 IP-10.TB and T-SPOT.TB assays were simulataneously performed on peripheral blood samples. The diagnostic performance of IP-10.TB and T-SPOT.TB were analyzed using the receiver operating characteristic curve. Accordance of IP-10.TB and T-SPOT.TB was analyzed by Cohen's kappa test, while the correlation between the expression level of IP-10 mRNA in IP-10.TB test and the number of SFCs in T-SPOT.TB test were analyzed by Pearson correlation test. Results A total of 235 patients with tuberculosis, 110 patients with other diseases and 153 individuals with lower risk of MTB infection hen 0.001) between IP-10.TB and T-SPOT.TB assays. Conclusion These results showed that the diagnostic performance of IP-10.TB was consistent with that in T-SPOT.TB, and this test could be a novel adjunctive tool for the diagnosis of tuberculosis.Objective To explore the clinical characteristics and risk factors of patients with Coronavirus Disease 2019 (COVID-19) when developing multiple organ dysfunction syndrome (MODS). Methods Data from 458 inpatients of confirmed COVID-19 in Wuhan, Shanghai and Tongling from December 29, 2019 to March 24, 2020 were retrospectively collected. COVID-19 was confirmed by real-time RT-PCR of throat swab samples. Data of demographics, clinical presentation, laboratory tests, imaging findings, treatment and prognosis were obtained from medical record and compared between COVID-19 patients with and without MODS. Risk factors for the development of MODS were analyzed by univariate and multivariate logistic regression analysis. Results Of the 458 COVID-19 patients (266 from Wuhan, 208 from Shanghai, and 24 from Tongling), 103 developed transient or persistent MODS in the course. More male patients were found in those with MODS (72.8% vs 54.6%, P=0.001). And MODS patients were of older age (72.8% vs 54.6%, P=0.001), more chronic comorbidities (68.0% vs 43.4%, P10 mg/L (OR=3.92, 95%CI 1.41-10.89, P=0.009). Conclusions COVID-19 patients with MODS were of higher severity and mortality. Early identification of high-risk groups with MODS according to risk factors may be helpful for early treatment.Objective To study the risk factors associated with the hospital survival rate of elder patients with acute respiratory distress syndrome (ARDS) in Medical/Respiratory Intensive Care Units (MICUs/RICUs) by evaluating the prognosis, and therefore to provide insight into patient treatment strategy. Methods Twenty MICUs/RICUs of 19 general hospitals in mainland China participated in the multicenter prospective cohort study carried out from Mar 1st, 2016 to Feb 28th, 2018. Patients who met the criteria of Berlin ARDS and older than 65 years were recruited. Baseline data, risk factors of ARDS, ventilator setup and prognosis data were collected from all patients. Univariant and multivariant regression analysis were conducted to analyze the factors associated with the prognosis. Results 170 elder ARDS patients (age≥65 years) met the Berlin ARDS criteria, among whom 8.8% (15/170), 42.9% (73/170) and 48.2% (82/170) patients had mild, moderate and severe ARDS, respectively. The most common predisposing factor for elder ARDS was pneumonia, which was present in 134 patients (78.