scholarly journals Computed tomography findings, temporal course, and clinical relevance of subpleural pulmonary interstitial emphysema in patients with pneumomediastinum

2021 ◽  
Vol 10 (7) ◽  
pp. 205846012110342
Author(s):  
Akihiro Nakamata ◽  
Nanae Tsuchiya ◽  
Tetsuhiro Miyara ◽  
Murasaki Shiotani ◽  
Shinji Gibo ◽  
...  
Keyword(s):  
Risk Factors ◽  
Pulmonary Fibrosis ◽  
Blunt Trauma ◽  
Clinical Relevance ◽  
Odds Ratio ◽  
Pulmonary Interstitial Emphysema ◽  
Interstitial Emphysema ◽  
Increased Risk ◽  
Temporal Course

Background Subpleural pulmonary interstitial emphysema is defined as the air in the subpleural portion of the lung, and the clinical relevance is not well understood. Purpose to evaluate the frequency, temporal course, risk factors, and clinical significance of subpleural pulmonary interstitial emphysema (PIE) in patients with pneumomediastinum resulting from ruptured alveoli and other causes. Material and Methods This was a retrospective study of 130 patients with pneumomediastinum on CT between January 2009 and December 2019 at 2 hospitals. Patients were divided into 3 groups as follows: spontaneous pneumomediastinum ( n = 101), pneumomediastinum due to blunt trauma ( n = 16), and pneumomediastinum due to another known cause ( n = 13). The frequencies of radiographic features (subpleural PIE, peribronchovascular PIE, pneumothorax, pulmonary fibrosis, and emphysematous changes) between the 3 groups were compared by the χ2 or Kruskal–Wallis test. Odds ratios were calculated to evaluate candidate risk factors for subpleural and peribronchovascular PIE. Results Subpleural PIE was observed in 0%, 15.8%, and 31.3% of patients with pneumomediastinum due to another cause, spontaneous mediastinum, and blunt trauma, respectively. In most patients, subpleural PIE resolved spontaneously (85.7% within 8 days). Two patients with pulmonary fibrosis showed recurrent subpleural PIE on follow-up. Young age showed increased risk for subpleural PIE (odds ratio [OR] 0.9, 95% confidence interval [CI] 0–0.99). Conclusion Subpleural PIE was only detected in patients with pneumomediastinum due to ruptured alveoli and resolved spontaneously and rapidly. Subpleural PIE may be one route the air from ruptured alveoli to the mediastinum.

scholarly journals Prevalence, risk factors, and impact of lung cancer on outcomes of idiopathic pulmonary fibrosis: a study from the Middle East

2018 ◽  
Vol 13 ◽  
Author(s):  
Sherif Mohamed ◽  
Hassan Bayoumi ◽  
Nashwa Abd El-Aziz ◽  
Ehab Mousa ◽  
Yasser Gamal
Keyword(s):  
Risk Factors ◽  
Lung Cancer ◽  
Idiopathic Pulmonary Fibrosis ◽  
Pulmonary Fibrosis ◽  
Odds Ratio ◽  
Independent Predictor ◽  
Significant Independent Predictor ◽  
Upper Egypt ◽  
The Impact

Background: No studies have addressed the impact of lung cancer (LC) on prognosis of patients with idiopathic pulmonary fibrosis (IPF) in Upper Egypt. We aimed to evaluate the prevalence and risk factors for LC among IPF patients and its impact on their outcomes and survival in Upper Egypt. Methods: A total of 246 patients with IPF who had complete clinical and follow up data were reviewed. They were categorized into 2 groups: 34 patients with biopsy-proven LC and IPF (LC-IPF) and 212 patients with IPF only (IPF). Survival and clinical characteristics of the two groups were compared. Results: Prevalence of LC was 13.8%. Pack/years was the most significant predictor for LC development in IPF (Odds ratio; 3.225, CI 1.257–1.669, p = 0.001). Survival in patients with LC-IPF was significantly worse than in patients with IPF without LC; median survival, 35 months vs 55 months; p = 0.000. LC accompanying IPF was one of the most significant independent predictors of survival in IPF patients (Hazard ratio 5.431, CI 2.186–13.492, p = 0.000). Mortality in LC-IPF patients was mainly due to LC progression in 36% and LC therapy-related complications in 22%. Conclusions: Prevalence of LC in IPF patients was 13.8%. Lung cancer has significant impacts on patients with IPF in Upper Egypt, in terms of clinical outcomes and survival. Smoking is the most significant independent predictor of LC development in IPF patients. A poorer survival was observed for patients with IPF developing LC, mainly due to LC progression, and to complications of its therapies. Further prospective, multicenter and larger studies are warranted.

scholarly journals Clinical Relevance of Cortical Cerebral Microinfarcts on 1.5T Magnetic Resonance Imaging in the Late-Adult Population

Stroke ◽  
2021 ◽  
Author(s):  
Saima Hilal ◽  
Arwin Doolabi ◽  
Henri Vrooman ◽  
M. Kamran Ikram ◽  
M. Arfan Ikram ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Magnetic Resonance ◽  
Cognitive Decline ◽  
Clinical Relevance ◽  
Color Naming ◽  
Population Based ◽  
Resonance Imaging ◽  
Increased Risk

Background and Purpose: Cortical cerebral microinfarcts (CMIs) have been linked with dementia and impaired cognition in cross-sectional studies. However, the clinical relevance of CMIs in a large population-based setting is lacking. We examine the association of cortical CMIs detected on 1.5T magnetic resonance imaging with cardiovascular risk factors, cerebrovascular disease, and brain tissue volumes. We further explore the association between cortical CMIs with cognitive decline and risk of stroke, dementia, and mortality in the general population. Methods: Two thousand one hundred fifty-six participants (age: 75.7±5.9 years, women: 55.6%) with clinical history and baseline magnetic resonance imaging (January 2009–December 2013) were included from the Rotterdam Study. Cortical CMIs were graded based on a previously validated method. Markers of cerebrovascular disease and brain tissue volumes were assessed on magnetic resonance imaging. Cognition was assessed using a detailed neuropsychological test at baseline and at 5 years of follow-up. Data on incident stroke, dementia, and mortality were included until January 2016. Results: Two hundred twenty-seven individuals (10.5%) had ≥1 cortical CMIs. The major risk factors of cortical CMIs were male sex, current smoking, history of heart disease, and stroke. Furthermore, presence of cortical CMIs was associated with infarcts and smaller brain volume. Persons with cortical CMIs showed cognitive decline in Stroop tests (color-naming and interference subtasks; β for color-naming, 0.18 [95% CI, 0.04–0.33], P interaction ≤0.001 and β for interference subtask, 1.74, [95% CI, 0.66–2.82], P interaction ≤0.001). During a mean follow-up of 5.2 years, 73 (4.3%) individuals developed incident stroke, 95 (5.1%) incident dementia, and 399 (19.2%) died. People with cortical CMIs were at an increased risk of stroke (hazard ratio, 1.18 [95% CI, 1.09–1.28]) and mortality (hazard ratio, 1.09 [95% CI, 1.00–1.19]). Conclusions: Cortical CMIs are highly prevalent in a population-based setting and are associated with cardiovascular disease, cognitive decline, and increased risk of stroke and mortality. Future investigations will have to show whether cortical CMIs are a useful biomarker to intervene upon to reduce the burden of stroke.

scholarly journals Nasal symptoms increase the risk of snoring and snoring increases the risk of nasal symptoms. A longitudinal population study

2021 ◽  
Author(s):  
Maria Värendh ◽  
Christer Janson ◽  
Caroline Bengtsson ◽  
Johan Hellgren ◽  
Mathias Holm ◽  
...  
Keyword(s):  
Risk Factors ◽  
Respiratory Health ◽  
Smoking Status ◽  
Northern Europe ◽  
Nasal Breathing ◽  
Nasal Symptoms ◽  
Increased Risk ◽  
Study Population ◽  
Independent Risk Factors

Abstract Purpose Humans have a preference for nasal breathing during sleep. This 10-year prospective study aimed to determine if nasal symptoms can predict snoring and also if snoring can predict development of nasal symptoms. The hypothesis proposed is that nasal symptoms affect the risk of snoring 10 years later, whereas snoring does not increase the risk of developing nasal symptoms. Methods In the cohort study, Respiratory Health in Northern Europe (RHINE), a random population from Denmark, Estonia, Iceland, Norway, and Sweden, born between 1945 and 1973, was investigated by postal questionnaires in 1999–2001 (RHINE II, baseline) and in 2010–2012 (RHINE III, follow-up). The study population consisted of the participants who had answered questions on nasal symptoms such as nasal obstruction, discharge, and sneezing, and also snoring both at baseline and at follow-up (n = 10,112). Results Nasal symptoms were frequent, reported by 48% of the entire population at baseline, with snoring reported by 24%. Nasal symptoms at baseline increased the risk of snoring at follow-up (adj. OR 1.38; 95% CI 1.22–1.58) after adjusting for age, sex, BMI change between baseline and follow-up, and smoking status. Snoring at baseline was associated with an increased risk of developing nasal symptoms at follow-up (adj. OR 1.22; 95% CI 1.02–1.47). Conclusion Nasal symptoms are independent risk factors for development of snoring 10 years later, and surprisingly, snoring is a risk factor for the development of nasal symptoms.

scholarly journals Cumulative incidence and risk factors for radiation induced leukoencephalopathy in high grade glioma long term survivors

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Robert Terziev ◽  
Dimitri Psimaras ◽  
Yannick Marie ◽  
Loic Feuvret ◽  
Giulia Berzero ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cumulative Incidence ◽  
High Grade Glioma ◽  
High Grade ◽  
Nucleotide Polymorphisms ◽  
Increased Risk ◽  
Radiation Induced ◽  
Long Term Survivors

AbstractThe incidence and risk factors associated with radiation-induced leukoencephalopathy (RIL) in long-term survivors of high-grade glioma (HGG) are still poorly investigated. We performed a retrospective research in our institutional database for patients with supratentorial HGG treated with focal radiotherapy, having a progression-free overall survival > 30 months and available germline DNA. We reviewed MRI scans for signs of leukoencephalopathy on T2/FLAIR sequences, and medical records for information on cerebrovascular risk factors and neurological symptoms. We investigated a panel of candidate single nucleotide polymorphisms (SNPs) to assess genetic risk. Eighty-one HGG patients (18 grade IV and 63 grade III, 50M/31F) were included in the study. The median age at the time of radiotherapy was 48 years old (range 18–69). The median follow-up after the completion of radiotherapy was 79 months. A total of 44 patients (44/81, 54.3%) developed RIL during follow-up. Twenty-nine of the 44 patients developed consistent symptoms such as subcortical dementia (n = 28), gait disturbances (n = 12), and urinary incontinence (n = 9). The cumulative incidence of RIL was 21% at 12 months, 42% at 36 months, and 48% at 60 months. Age > 60 years, smoking, and the germline SNP rs2120825 (PPARg locus) were associated with an increased risk of RIL. Our study identified potential risk factors for the development of RIL (age, smoking, and the germline SNP rs2120825) and established the rationale for testing PPARg agonists in the prevention and management of late-delayed radiation-induced neurotoxicity.

scholarly journals Positive Signs on Physical Examination Are Not Always Indications for Endotracheal Tube Intubation in Patients with Facial Burn

2020 ◽  
Author(s):  
Ruo-Yi Huang ◽  
Szu-Jen Chen ◽  
Yen-Chang Hsiao ◽  
Ling-Wei Kuo ◽  
Chien-Hung Liao ◽  
...  
Keyword(s):  
Risk Factors ◽  
Endotracheal Tube ◽  
Odds Ratio ◽  
Inhalation Injury ◽  
Burn Patients ◽  
Shortness Of Breath ◽  
Airway Protection ◽  
Increased Risk ◽  
Independent Risk Factors ◽  
Facial Burn

Abstract BackgroundAfter clinical evaluation in the emergency department (ED), facial burn patients are usually intubated to protect their airways. However, the possibility of unnecessary intubation or delayed intubation after admission exists. Objective criteria for the evaluation of inhalation injury and the need for airway protection in facial burn patients are needed.MethodsFacial burn patients between January 2013 and May 2016 were reviewed. Patients who were and were not intubated in the ED were compared. All intubated patients received routine bronchoscopy to evaluate whether they had inhalation injuries. Patients with and without confirmed inhalation injuries were compared. Multivariate logistic regression analysis was used to identify the independent risk factors for inhalation injuries in facial burn patients. The reasons for intubation in patients without inhalation injuries were also investigated.ResultsDuring the study period, 121 patients were intubated in the ED among a total of 335 facial burn patients. Only 73 (60.3%) patients were later confirmed to have inhalation injuries on bronchoscopy. The comparison between patients with and without inhalation injuries showed that shortness of breath (odds ratio=3.376, p=0.027) and high total body surface area (TBSA) (odds ratio=1.038, p=0.001) were independent risk factors for inhalation injury. Other physical signs (e.g., hoarseness, burned nostril hair, etc.), laboratory examinations and chest X-ray findings were not predictive of inhalation injury in facial burn patients. All patients with a TBSA over 60% were intubated in the ED even if they did not have inhalation injuries.ConclusionIn the management of facial burn patients, positive signs on conventional physical examinations may not always be predictive of inhalation injury and the need for endotracheal tube intubation in the ED. More attention should be paid to facial burn patients with shortness of breath and a high TBSA because they have an increased risk of inhalation injuries. Airway protection is needed in facial burn patients without inhalation injuries because of their associated injuries and treatment.

scholarly journals Stroke in hemodialysis patients randomized to different intravenous iron strategies: a prespecified analysis from the PIVOTAL trial

Kidney360 ◽  
2021 ◽  
pp. 10.34067/KID.0004272021
Author(s):  
Patrick B. Mark ◽  
Pardeep S. Jhund ◽  
Matthew R. Walters ◽  
Mark C. Petrie ◽  
Albert Power ◽  
...  
Keyword(s):  
Risk Factors ◽  
Stroke Risk ◽  
Controlled Trial ◽  
Intravenous Iron ◽  
Hemodialysis Patients ◽  
High Dose ◽  
Pivotal Trial ◽  
Increased Risk ◽  
Iv Iron

Background: People with kidney failure treated with hemodialysis (HD) are at increased risk of stroke compared to similarly aged people with normal kidney function. One concern is that treatment of renal anemia might increase stroke risk. We studied risk factors for stroke in a prespecified secondary analysis of a randomized controlled trial of intravenous iron treatment strategies in HD. Methods: We analyzed data from the Proactive IV IrOn Therapy in HaemodiALysis Patients (PIVOTAL) trial focusing on variables associated with risk of stroke. The trial randomized 2,141 adults, who had started hemodialysis <12 months earlier and who were receiving an erythropoiesis-stimulating agent (ESA), to high-dose IV iron administered proactively or low-dose IV iron administered reactively in a 1:1 ratio. Possible stroke events were independently adjudicated. We performed analyses to identify variables associated with stroke during follow-up and assessed survival following stroke. Results: During a median 2.1 years follow-up, 69 (3.2%) patients experienced a first post randomization stroke. 57 (82.6%) were ischemic strokes and 12 (17.4%) hemorrhagic strokes. There were 34 post randomization strokes in the proactive arm and 35 in the reactive arm (hazard ratio (95% confidence interval): 0.90 (0.56, 1.44), p=0.66). In multivariable models, female gender, diabetes, history of prior stroke at baseline, higher baseline systolic blood pressure, lower serum albumin and higher C-reactive protein were independently associated with stroke events during follow up. Hemoglobin, total iron or ESA dose were not associated with risk of stroke. 58% of patients with a stroke event died during follow-up, compared to 23% without a stroke. Conclusions: In hemodialysis patients, stroke risk is broadly associated with risk factors previously described to increase cardiovascular risk in this population. Proactive intravenous iron does not increase stroke risk.

scholarly journals Retrospective analysis of risk factors of hypotensive bradycardic events during shoulder arthroscopic surgery under interscalene blockade in the sitting position

2020 ◽  
Vol 73 (6) ◽  
pp. 542-549
Author(s):  
Taeha Ryu ◽  
Baek Jin Kim ◽  
Seong Jun Woo ◽  
So Young Lee ◽  
Jung A Lim ◽  
...  
Keyword(s):  
Risk Factors ◽  
Logistic Regression ◽  
Odds Ratio ◽  
Arthroscopic Surgery ◽  
Sitting Position ◽  
Past Medical History ◽  
Frequent Adverse Event ◽  
Increased Risk ◽  
Potential Risk Factors ◽  
Independent Risk Factors

Background: Hypotensive bradycardic events (HBEs) are a frequent adverse event in patients who underwent shoulder arthroscopic surgery under interscalene block (ISB) in the sitting position. This retrospective study was conducted to investigate the independent risk factors of HBEs in shoulder arthroscopic surgery under ISB in the sitting position. Methods: A total of 2549 patients who underwent shoulder arthroscopic surgery under ISB and had complete clinical data were included in the study. The 357 patients who developed HBEs were included in the HBEs group, and the remaining 2192 in the non-HBEs group. The potential risk factors for HBEs, such as age, sex, past medical history, anesthetic characteristics, and intraoperative medications were collected and compared between the groups. Statistically significant variables were included in a logistic regression model to further evaluate the independent risk factors for HBEs in shoulder arthroscopic surgery under ISB. Results: The incidence of HBEs was 14.0% (357/2549). Logistic regression analysis revealed that the intraoperative use of hydralazine (odds ratio [OR] 4.2; 95% confidence interval [CI] 2.9–6.3), propofol (OR 2.1; 95% CI 1.3–3.6), and dexmedetomidine (OR 3.9; 95% CI 1.9–7.8) before HBEs were independent risk factors for HBEs in patients who received shoulder arthroscopic surgery under ISB. Conclusions: The intraoperative use of antihypertensives such as hydralazine and sedatives such as propofol or dexmedetomidine leads to increased risk of HBEs during shoulder arthroscopic surgery under ISB in the sitting position.

scholarly journals Bortezomib administration is a risk factor associated with the development of tumor lysis syndrome in male patients with multiple myeloma: A retrospective study

2020 ◽  
Author(s):  
Masahiro Kondo ◽  
Yuji Hotta ◽  
Karen Yamauchi ◽  
Akimasa Sanagawa ◽  
Hirokazu Komatsu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Multiple Myeloma ◽  
Odds Ratio ◽  
Tumor Lysis Syndrome ◽  
Low Risk ◽  
Novel Therapies ◽  
Tumor Lysis ◽  
Factors Associated ◽  
Increased Risk ◽  
Male Patients

Abstract Background: Novel agents such as proteasome inhibitors have been developed for several years to treat multiple myeloma. Although multiple myeloma is a low-risk disease for developing tumor lysis syndrome (TLS), treatment with these novel therapies might increase TLS risk. Previous studies, mostly case reports or case series, have reported bortezomib-induced TLS in patients with multiple myeloma. This study aimed to investigate risk factors associated with TLS development in multiple myeloma patients.Methods: We retrospectively investigated incidences of laboratory and clinical TLS (LTLS and CTLS, respectively) in patients who received primary therapy for treatment-naive, symptomatic multiple myeloma between May 2007 and January 2018. We used multivariate logistic regression analyses to evaluate the associations between TLS and several parameters previously reported to be associated with increased risk.Results: This study included 210 patients with multiple myeloma, of which ten (4.8%) had LTLS and seven (3.3%) had CTLS. The characteristics of the administered anticancer or prophylactic antihyperuricemic agents were similar between patients with and without TLS. Multivariate analyses revealed that TLS was most strongly associated with bortezomib-containing therapy (odds ratio = 3.40, P = 0.069), followed by male sex (odds ratio = 2.29, P = 0.153). In a subgroup analysis focused on men, treatment with bortezomib-containing therapy was significantly associated with increased risk of TLS (odds ratio = 8.51, P = 0.046).Conclusion: In the present study, we investigated the risk factors associated with TLS development in 210 multiple myeloma patients, which, to the best of our knowledge, is the largest number of patients reported to date. Furthermore, this study is the first to evaluate TLS risk factors in MM by adjusting for the effects of potential confounding factors in patients’ backgrounds. Consequently, we found that bortezomib-containing therapy increases the risk of TLS in male patients with multiple myeloma. TLS risk should be evaluated further in low-risk diseases such as multiple myeloma, since a significant number of novel therapies can achieve high antitumor responses.

scholarly journals Community prevalence of SARS-CoV-2 in England: Results from the ONS Coronavirus Infection Survey Pilot

2020 ◽  
Author(s):  
Koen B Pouwels ◽  
Thomas House ◽  
Julie V Robotham ◽  
Paul Birrell ◽  
Andrew B Gelman ◽  
...  
Keyword(s):  
Risk Factors ◽  
Credible Interval ◽  
Control Measures ◽  
Cross Sectional ◽  
Direct Patient Contact ◽  
Increased Risk ◽  
Potential Risk Factors ◽  
Coronavirus Infection ◽  
Over Time

Objective: To estimate the percentage of individuals infected with severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) over time in the community in England and to quantify risk factors. Design: Repeated cross-sectional surveys of population-representative households with longitudinal follow-up if consent given. Setting: England. Participants: 34,992 Individuals aged 2 years and over from 16,722 private residential households. Data were collected in a pilot phase of the survey between 26 April and 28 June 2020. Main outcome measures: Percentage of individuals in the community testing positive for SARS-CoV-2 RNA using throat and nose swabs. Individuals were asked about any symptoms and potential risk factors. Results: The percentage of people in private-residential households testing positive for SARS-CoV-2 reduced from 0.32% (95% credible interval (CrI) 0.19% to 0.52%) on 26 April to 0.08% (95% CrI 0.05% to 0.12%) on 28 June, although the prevalence stabilised near the end of the pilot. Factors associated with an increased risk of testing positive included having a job with direct patient contact (relative exposure (RE) 4.06, 95% CrI 2.42 to 6.77)), working outside the home (RE 2.49, 95% CrI 1.39 to 4.45), and having had contact with a hospital (RE 2.20, 95% CrI 1.09 to 4.16 for having been to a hospital individually and RE 1.95, 95% CrI 0.81 to 4.09 for a household member having been to a hospital). In 133 visits where individuals tested positive, 82 (61%, 95% CrI 53% to 69%) reported no symptoms, stably over time. Conclusion: The percentage of SARS-CoV-2 positive individuals declined between 26 April and 28 June 2020. Positive tests commonly occurred without symptoms being reported. Working outside your home was an important risk factor, indicating that continued monitoring for SARS-CoV-2 in the community will be essential for early detection of increases in infections following return to work and other relaxations of control measures.

scholarly journals Post-COVID-19 pulmonary fibrosis and its predictive factors: a prospective study

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Mehrdad Nabahati ◽  
Soheil Ebrahimpour ◽  
Reza Khaleghnejad Tabari ◽  
Rahele Mehraeen
Keyword(s):  
Pulmonary Fibrosis ◽  
Ct Scan ◽  
Predictive Factors ◽  
Lung Fibrosis ◽  
Chest Ct ◽  
Clinical Severity ◽  
Secondary Outcome ◽  
Increased Risk ◽  
Chest Ct Scan

Abstract Background We aimed to prospectively assess the lung fibrotic-like changes, as well as to explore their predictive factors, in the patients who survived Coronavirus Disease 2019 (COVID-19) infection. In this prospective cross-sectional study, we recruited patients who had been treated for moderate or severe COVID-19 pneumonia as inpatients and discharged from Rohani hospital in Babol, northern Iran, during March 2020. The clinical severity of COVID-19 pneumonia was classified as per the definition by World Health Organization. We also calculated the CT severity score (CSS) for all patients at admission. Within the 3 months of follow-up, the next chest CT scan was performed. As the secondary outcome, the patients with fibrotic abnormalities in their second CT scan were followed up in the next 3 months. Results Totally, 173 COVID-19 patients were finally included in the study, of whom 57 (32.9%) were male and others were female. The mean age was 53.62 ± 13.67 years old. At 3-month CT follow-up, evidence of pulmonary fibrosis was observed in 90 patients (52.0%). Consolidation (odds ratio [OR] = 2.84), severe disease (OR 2.40), and a higher CSS (OR 1.10) at admission were associated with increased risk of fibrotic abnormalities found at 3-month CT follow-up. Of 62 patients who underwent chest CT scan again at 6 months of follow-up, 41 patients (66.1%) showed no considerable changes in the fibrotic findings, while the rest of 21 patients (33.9%) showed relatively diminished lung fibrosis. Conclusion Post-COVID-19 lung fibrosis was observed in about half of the survivors. Also, patients with severe COVID-19 pneumonia were at a higher risk of pulmonary fibrosis. Moreover, consolidation, as well as a higher CSS, in the initial chest CT scan, was associated with increased risk of post-COVID-19 lung fibrosis. In addition, some patients experienced diminished fibrotic abnormalities in their chest CT on 6-month follow-up, while some others did not.

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