Relationship between chest computed tomography findings and clinical conditions of coronavirus disease (COVID-19): A multicentre experience.

AIMS: This study aimed to investigate the clinical and chest computed tomography (CT) features associated with clinical parameters for coronavirus disease (COVID-19) in the capital of Turkey, Ankara. MATERIALS AND METHODS: Epidemiological, clinical features, laboratory findings and radiological characteristics of 1563 hospitalised patients with COVID-19 in Ankara were collected, reviewed and analysed in this study. The risk factors associated with disease severity were investigated. RESULTS: Non-severe (1214; 77.7%) and severe cases (349; 22.3%) were enrolled in the study. Compared with the non-severe group, the severe group were significantly older and had more comorbidities (ie, hypertension, diabetes mellitus, cardiovascular disease and chronic kidney disease). Smoking was more common in the severe group. Severe patients had higher respiratory rates and higher incidences of cough and dyspnoea compared with non-severe patients. Compared with the non-severe patients, the severe patients had increased C-reactive protein (CRP), procalcitonin, neutrophil to lymphocyte ratio (NLR) and CRP/albumin ratio and decreased albumin. The occurrence rates of consolidation, subpleural sparing, crazy-paving pattern, cavity, halo sign, reversed halo sign, air bronchogram, pleural thickening, micronodule, subpleural curvilinear line and multilobar and bilateral involvement in the CT finding of the severe patients were significantly higher than those of the non-severe patients. CONCLUSIONS: Many factors are related to the severity of COVID-19, which can help clinicians judge the severity of the patient and evaluate the prognosis. This cohort study revealed that male sex, age (≥55 years), patients with any comorbidities, especially those with cardiovascular disease, dyspnoea, increased CRP, D-dimer and NLR, and decreased lymphocyte count and CT findings of consolidation and multilobar involvement were predictors of severe COVID-19.

Does dust-associated pulmonary alveolar proteinosis represent an autoimmune disorder?

The role of autoantibodies against granulocyte-macrophage colony-stimulating factor (GM-CSF) in the development of secondary pulmonary alveolar proteinosis (PAP) in patients exposed to occupational and environmental dust remains unclear. Herein, we describe two cases of secondary PAP who had GM-CSF antibodies and absence of STAT5 phosphorylation index, suggestive of a potential relationship between the appearance of GM-CSF antibodies and environmental dust exposure. However, whether the presence of GM-CSF antibodies is a part of the pathological process or represents an epiphenomenon is currently unknown. In this report, we would like to present two cases supporting these new data and briefly discuss the possible role of autoimmune mechanisms in the development of secondary PAP. Am. J. Ind. Med. 60:591-597, 2017. © 2017 Wiley Periodicals, Inc.

A cross sectional observational study on the influence of chronic obstructive pulmonary disease on activities of daily living: the COPD-Life study.

INTRODUCTION: This study was designed to identify the impact of chronic obstructive pulmonary disease (COPD) on activities of daily living, life styles and needs in patients. PATIENTS AND METHODS: Participants of this national, multi-centered, cross-sectional observational study included 497 stable COPD patients from 41 centers. The mean age (standard deviation; SD) was 63.3 (9.3) years with 59.0% of the patients under the age of 65, and 89.9% of the participants were male. Sociodemographic and COPD-related data were gathered at enrollment and during the 1-month telephone follow-up. RESULTS: The mean (SD) COPD duration was 7.3 (6.5) years in the overall population while 5.4 (4.6) years for patients who recieved COPD diagnosis at least one year after the onset of symptoms. Dyspnea was the most common (83.1%) symptom and walking up stairs (66.6%) was the most difficult activity to be performed. Majority of the patients were aware of COPD as a chronic disease (63.4%), requiring ongoing treatment (79.7%), mainly caused by smoking (63.5%). 59% of the patients were under the age of 65 years-old. In 84% of patients, graduation from at least a primary school was identified. Results revealed an average number of two dependants that were obliged to look after per patient, ability to go on an outing in 91% of the patients, and going grocery shopping with ease in more than two-thirds of the study population. There was no significant difference in regular use of medication device across different educational or age groups. The top three COPD treatment expectations of the patients were being able to breathe (24.1%), walking (17.1%), and walking up stairs (11.7%), while shortness of breath (43.3%) was the first priority treatment need. CONCLUSION: In contrast to the common view that COPD prevalance is higher in old age population, this study showed that the rate of the disease is higher among younger patients than expected; indispensability of out of the house activities in majority of patients; and use of regular medication device to be independent of educational level and the age of COPD patients. Our findings indicate that the likelihood of COPD patient population to be composed of younger and active individuals who do not spend majority of their time at home/in bed as opposed to popular belief. Therefore, availability of a portable and easy to use device for medication seems to be important to enhance daily living.

Sarcoidosis in iron-steel industry: mini case series.

Sarcoidosis is a disease of unknown etiology. Despite the proposed connection between the development of sarcoidosis and exposure to environmental and toxic substances, no definitive associations could be established. Also, the role of silica and silicates in the etiology of this condition is currently unknown. Heat-treatment of silica results in the generation of tridymite and cristobalite forms and iron-steel industry represents one branch of industry in which silicone element is exposed to temperatures around 2000°C. Studies reporting on the incidence of sarcoidosis in the workers of iron-steel industry are scarce in number, and workers of this industrial branch are known to be exposed to silica in the form of cristobalite, nano-particulate silicone, metal oxides, and silicates. These substances, which have respiratory toxic properties and have been reported to be associated with autoimmune conditions, may also play a role in the pathogenesis of sarcoidosis. In our clinic, sarcoidosis was diagnosed in a total of 4 individuals, who works in the iron-steel industry. Through this report involving a series of patients with sarcoidosis, we also wanted to discuss the role of crystalline silica forms and silicates in the etiology of sarcoidosis, which is also considered to be an auto-immune condition. (Sarcoidosis Vasc Diffuse Lung Dis 2017; 34: 365-372).