Potential role of pre-treatment bone marrow SUVmean to liver SUVmean ratio (BM/L) and comparison of primary tumour FDG uptake with brain FDG uptake in predicting survival in limited-stage lung cancers.

INTRODUCTION: The survival rates of patients with limited-stage small-cell lung cancer are low despite curative treatment. Accordingly, we investigated the disease prognosis by comparing the pre-treatment bone marrow mean standardised uptake values (SUVmean) / liver SUVmean ratio (BM/L) and primary tumour FDG uptake and brain FDG uptake to prognosis. MATERIALS AND METHODS: This was an observational, retrospective, single-centre study of patients with limited-stage small-cell lung cancer. Maximum standardised uptake values before treatment SUVmax, mean SUV (SUVmean), metabolic tumor volume (MTV), total lesion glycolysis (TLG), liver (KC) SUVmean, bone marrow SUVmean, BM/L ratio (grouped as BM/L <1 and BM/L<1), FDG uptake level of the primary tumour are higher than brain FDG uptake. The association of low prevalence with overall survival (OS) and progression-free survival (PFS) was evaluated. DISCUSSION: A total of 125 patients were included in the study. The risk of death was found to be two times higher in patients with primary tumour FDG uptake higher than brain FDG uptake compared to those with less brain involvement. The risk of death in patients with BM/L>1 was found to be 1.6 times higher than in patients with BM/L<1. CONCLUSION: Comparison of BM/L, FDG uptake of the primary tumour and brain FDG uptake as new prognostic parameters can be guiding in the classification of patients with LD-SCLC with a higher risk of death or progression and in planning new treatment strategies.

The efficacy of 18F-FDG PET/CT in monitoring disease progression in malignant pleural mesothelioma.

OBJECTIVE: In the event of suspicion of malignant pleural mesothelioma (MPM) progression, imaging plays an important role. We aimed to evaluate the efficacy of 18F-FDG PET/CT in monitoring disease progression by comparing it with CT, and estimate median overall survival (OS) according to progression status with CT and 18F-FDG PET/CT. MATERIALS AND METHODS: This was an observational, retrospective, single-institution study with MPM patients who had both 18F-FDG PET/CT and CT for monitoring disease progression from March 2009 to February 2020. Clinical features, radiological findings, and progression status according to CT [radiologic progression negative (RPN), radiologic progression positive (RPP)] and 18F-FDG PET/CT [metabolic progression negative (MPN), metabolic progression positive (MPP)] were recorded. The discrepancies and concordance between two methods were evaluated. The OS was estimated using the Kaplan-Meier method. RESULTS: A total of 56 patients were included. There were thirty-one (55.3%) RPN and 25 (44.7%) RPP, while there were 26 (46.5%) MPN and 30 (53.5%) MPP. All RPP patients were also found to be MPP, however, among RPN, 5 patients (8.9% of all patients) were evaluated as MPP. The concordance between two methods in monitoring disease progression was very good (K = 0.423; p < 0.01). The OS was 26 ±â€¯2.6 months in all patients. Kaplan-Meier curves between RPN and RPP, and between MPN and MPP did not show statistically significant differences (p = 0.56 and p = 0.25, respectively). CONCLUSIONS: Both methods are equally acceptable in monitoring disease progression in MPM, even though 18F-FDG PET/CT detected more progression than CT did.

Characteristics of our hypoxemic COVID-19 pneumonia patients receiving corticosteroids and mortality-associated factors.

BACKGROUND: COVID-19 is a disease associated with diffuse lung injury that has no proven effective treatment yet. It is thought that glucocorticoids may reduce inflammation-mediated lung injury, disease progression, and mortality. We aimed to evaluate our patient's characteristics and treatment outcomes who received corticosteroids for COVID-19 pneumonia. METHODS: We conducted a multicenter retrospective study and reviewed 517 patients admitted due to COVID-19 pneumonia who were hypoxemic and administered steroids regarding demographic, laboratory, and radiological characteristics, treatment response, and mortality-associated factors. RESULTS: Of our 517 patients with COVID-19 pneumonia who were hypoxemic and received corticosteroids, the mortality rate was 24.4% (n = 126). The evaluation of mortality-associated factors revealed that age, comorbidities, a CURB-65 score of ≥ 2, higher SOFA scores, presence of MAS, high doses of steroids, type of steroids, COVID-19 treatment, stay in the intensive care unit, high levels of d-dimer, CRP, ferritin, and troponin, and renal dysfunction were associated with mortality. CONCLUSION: Due to high starting and average steroid doses are more associated with mortality, high-dose steroid administration should be avoided. We believe that knowing the factors associated with mortality in these cases is essential for close follow-up. The use of CURB-65 and SOFA scores can predict prognosis in COVID-19 pneumonia.

Clinical management of lung cancer patients with respiratory symptoms during the COVID-19 pandemic.

OBJECTIVE: There are many clinical conditions, such as lung cancer, that need to be followed up and treated during a pandemic. Providing health care for patients who are immune-suppressive requires extra care. METHOD: Among 108 lung cancer patients who had been hospitalized during the COVID-19 pandemic, 18 with respiratory symptoms were evaluated retrospectively. RESULTS: The patients' median age was 64 ± 9.4 with a male predominance (male n = 16, female n = 2). Thirteen had non-small cell lung cancer (NSCLC), and 5 had small cell lung cancer (SCLC). Nine (50%) patients were receiving chemotherapy. The most common symptom was shortness of breath (n = 14, 77.8%), followed by fever (n = 10, 55.6%). The findings confirmed on computed thorax tomography (CTT) were as follows: consolidation (n = 8, 44.4%), ground glass opacities (n = 8, 44.4%) and thoracic tumour/mediastinal-hilar lymphadenopathy (n = 3, 16.7%). Hypoxia was seen in 11 patients (61.1%), twelve patients had an elevated LDH (median = 302 ± 197) and lymphopenia (median = 1055 ± 648) and 5 (27.7%) were highly suspected of having contracted COVID-19. None of their nasopharyngeal swaps was positive. Two of these 5 patients received COVID-19 specific treatment even though they thrice had negative reverse transcription polymerase chain reaction (RT-PCR) results. The two patients responded well to both clinical and radiological treatments. For one case with SCLC receiving immunotherapy, methylprednisolone was initiated for radiation pneumonitis after excluding COVID-19. CONCLUSION: In line with a country's health policies and the adequacy of its health system, the necessity of a multidisciplinary approach in the management and treatment of complications in patients with lung cancer has become even more important during the COVID-19 pandemic.

Effect of Asbestos Exposure on the Frequency of EGFR Mutations and ALK/ROS1 Rearrangements in Patients With Lung Adenocarcinoma: A Multicentric Study.

OBJECTIVE: The aim of this study is to investigate the effect of asbestos exposure on cancer-driver mutations. METHODS: Between January 2014 and September 2018, epidermal growth factor receptor (EGFR), anaplastic lymphoma receptor tyrosine kinase (ALK), and c-ros oncogene 1 receptor tyrosine kinase gene (ROS1) alterations, demographic characteristics, asbestos exposure, and asbestos-related radiological findings of 1904 patients with lung adenocarcinoma were recorded. RESULTS: The frequencies of EGFR mutations, ALK, and ROS1 rearrangements were 14.5%, 3.7%, and 0.9%, respectively. The rates of EGFR mutations and ALK rearrangements were more frequent in asbestos exposed non-smokers (48.7% and 9%, respectively). EGFR mutation rate was correlated to female gender and not-smoking, ALK rearrangement rate was correlated to younger age, not-smoking, and a history of asbestos exposure. CONCLUSIONS: The higher rate of ALK rearrangements in asbestos-exposed lung adenocarcinoma cases shows that asbestos exposure may most likely cause genetic alterations that drive pulmonary adenocarcinogenesis.

The Clinical Impact of Re-biopsies in Lung Adenocarcinoma: a Retrospective Multicenter Study.

If a patient's cancer progresses while undergoing targeted therapy, a re-biopsy is not mandatory. But when evaluating the benefits and risks on a case-by-case basis (transformation to small cell, assessing for a clinical trial), physicians should inform patients about the possible need for a re-biopsy (5). This was a retrospective and multicentre study. A total of 644 patients with lung adenocarcinoma were reviewed, 625 of whom were ruled eligible. From them, 399 were found to show disease progression, and 126 re-biopsies were performed. Progression status, re-biopsy sites, success of obtaining adequate tissue, molecular patterns after re-biopsy and subsequent treatments were analysed. Survival differences among patients with disease progression were then examined according to re-biopsy status. Overall, 625 patients with adenocarcinoma and a median age of 61.4 were evaluated. Initial tyrosine kinase inhibitor (TKI) usage numbered 37 patients (5.9%). Progression was diagnosed in 399 (63.8%) patients, out of which 26 (31.6%) underwent re-biopsies. The successful number of re-biopsies was 103 (81.7%). No complications were observed after any of the biopsy procedures. Subsequent treatments were changed in 15 patients (11.9%), who began new TKI treatments. Poor performance status was the most common reason for not performing a biopsy (n = 65; 23.8%), followed by the physician's decision (n = 40; 14.6%). Re-biopsies can demonstrate the new characteristics of a tumour and can detect the activation of pre-existing clones, making possible new treatment opportunities for patients. According to the performance status of the patient and the availability of the progressive lesion, we should increase the rate of re-biopsies before the decision to follow up with the best supportive care.

Frequency of vitamin K oxidoreductase complex subunit-1 (VKORC1) polymorphisms and warfarin dose management in patients with venous thromboembolism.

Warfarin works by inhibiting VKORC1, so polymorphisms of this gene modify the required drug dose. The aim of this study is to examine the relation between therapeutic weekly dose of warfarin and C1173T/G1639A polymorphism of VKORC1 in patients with VTE. Seventy-five patients with VTE were enrolled. Weekly warfarin doses and time (day) to reach therapeutic INR were evaluated retrospectively along with VKORC1-C1173T and G1639A alleles. The mean weekly warfarin dose was lower and time to reach therapeutic INR was shorter in homozygote alleles (AA and TT) (p < 0.05). The multivariate regression model was produced, R2 = 0.05% for age (p = 0.04), R2 = 6% for VKORC1 (p = 0.03), the model for estimating warfarin dose R2 = 17% (p > 0.05). In particular, patients who need overdose of warfarin or whose bleeding score is high, study of these polymorphisms can be considered.

Severe Pneumonia Treated Succesfully with Levofloxacin and Oseltamivir During Flu Epidemic.

Viral pneumonia is an important cause of community acquired pneumonias (CAP). It's not only specific to childhood period. Although immunocompromised adults are susceptible; all young and healthy adults are at risk. Viral pneumonias are usually underestimated due to lack of diagnostic modalities so a clinician must be aware of. Co-infection of viruses and bacteria is not uncommon and can be mortal especially in a flu epidemic, therefore, in the absence of diagnostic tools initiating to anti-viral treatment without delay is important.

Pulmonary alveolar proteinosis and successful therapy with combined lavage procedures: Case reports.

Pulmonary alveolar proteinosis (PAP) is a rare disease characterized by the accumulation of lipoproteinaceous material within alveolar spaces. Whole-lung lavage (WLL) has been the most common therapeutic intervention for this disorder. However, patients presenting with PAP are usually hypoxemic or in poor clinical condition, and WLL may be impossible to perform. In such cases, multiple segmental lavage (MSL) may be advocated as a first-choice therapy prior to WLL. Herein, we present two cases with idiopathic PAP treated successfully with both lavage techniques consecutively. After the MSL procedure, WLL was performed, and both patients showed a marked clinical and physiologic improvement. Therefore, for patients who are not good candidates for general anesthesia, we recommend MSL (or 'prewash') before WLL to produce an increase in the blood oxygen level for long-duration general anesthesia. In the surgical room, close monitoring and repositioning of the patient as well as maintenance and inspection of the correct tube position, and manual chest wall percussion are extremely important for the safety and success of the procedure.

[Early use of noninvasive mechanical ventilation in patients with acute hypercapnic respiratory failure in a respiratory ward: a prospective study]. / Uso precoz de la ventilación mecánica no invasiva en pacientes con insuficiencia respiratoria hipercápnica aguda ingresados en una sala de neumología: estudio prospectivo.

BACKGROUND: In recent years, the optimal location for noninvasive mechanical ventilation (NIMV) has been a matter of debate. Our aim was to detect the effectiveness of NIMV in acute hypercapnic respiratory failure (AHRF) in respiratory ward and factors associated with failure. METHODS: 69 patients treated with NIMV in respiratory ward were prospectively evaluated. The success of NIMV was defined as absence of need for intensive care unit (ICU) transfer with patient's discharge from hospital (group 1), failure of NIMV was defined as need for ICU transfer (group 2). RESULTS: The mean age was significantly higher in group 2. The cause of respiratory failure was COPD in 51 patients, obesity-hypoventilation syndrome in 14 and kyphoscoliosis in 4 patients. NIMV was successful in 55 patients and unsuccessful in 14. There was no significant difference between the two groups for pretreatment pH, PaCO2 and PaO2/FiO2. After 1h and 3h of NIMV there was significant improvement in group 1. After 3h of NIMV, in group 1 respiratory rate was significantly decreased. The pretreatment APACHE II score, respiratory rate, frequency of pneumoniae, associated complication and comorbid disease was significantly higher in group 2. The success rate was higher in patients with good compliance to NIMV. CONCLUSION: NIMV can be successfully applied in patients with AHRF in respiratory ward. The associated factors with NIMV failure are absence of early improvement in blood gases and respiratory rate, bad compliance to NIMV, older age, presence of associated complication, comorbid disease, pneumonia and high baseline respiratory rate.