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RATIONALE: Nonspecific interstitial pneumonia (NSIP) is a subtype of interstitial lung disease which can either be idiopathic or secondary to other conditions. Idiopathic NSIP is a relatively rare entity and diagnosis should be considered carefully as it is mainly a diagnosis of exclusion. The aim of this retrospective study was to evaluate a cohort of NSIP patients with a view to identifying any clinical and mortality differences between idiopathic and secondary varieties. METHODS: We screened 700 patients from our interstitial lung disease database and identified 44 cases of NSIP retrospectively. Statistical analysis was conducted to evaluate if there was a difference in demographics such as gender and ethnicity, physiological parameters including forced vital capacity, diffusing capacity, average oxygen saturations, and immunology profile between two groups. Furthermore, a difference in mortality was evaluated between idiopathic and secondary NSIP. RESULTS: The data analysis showed that 63.6% (28 of 44) of patients had idiopathic NSIP versus 36.4% (16 of 44) of patients had secondary NSIP. Majority of the secondary NSIP patients had an underlying connective tissue disease. In the idiopathic variety, there was a male preponderance (64.2%, P = .02) which was statistically different compared to relatively equal gender divide in secondary NSIP which was statistically insignificant (male vs. female: 43.8% vs. 56.3%, respectively, P = .42). The mean age of the idiopathic group was 74 years compared to 64 years in the secondary group which was statistically different (P = .01). In both groups (idiopathic and secondary NSIP), more than two-thirds (68%) were of White British ethnicity. Immunology profile was similar across both groups with no statistical difference in IgM, IgG, or IgA levels. At the time of analysis, there were 17.9% deaths (5 of 28) in the idiopathic NSIP group versus 6.3% (1 of 16) in the secondary NSIP group but this was not statistically significant (P = .14). Similarly, there was no statistically significant difference in the forced vital capacity (P = .59), diffusing capacity (P = .88), and resting oxygen saturations (P = .28) between idiopathic and secondary NSIP varieties. CONCLUSION: Our analysis showed that there was a statistically significant difference in gender (male preponderance in idiopathic NSIP only) and mean age difference among both varieties. There were no statistically significant differences in the clinical features and outcomes including mortality, physiological, and immunological parameters between idiopathic and secondary NSIP. Idiopathic NSIP was more common than secondary NSIP and secondary NSIP is mostly due to underlying connective tissue disease.
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Background and Objective: Pleural effusions (PEs) are commonly seen in various pathologies and have a significant impact on patient health and quality of life. Unlike for malignant PEs, non-malignant PEs (NMPEs) do not have well-established guidelines. Much of the evidence base in this field is from a handful of randomised controlled trials (RCTs) and the majority are from retrospective cohort analyses and cases series. Cardiac related PEs fall within the entity of NMPEs and the aim of this narrative review is to gather the existing evidence in the field of congestive heart failure (CHF), pericarditis and post-cardiac injury syndrome (PCIS). This narrative review investigates the pathophysiology, diagnostic criteria and treatment options for the various cause of cardiac related PEs. Methods: This narrative review is based on a comprehensive literature search analysing RCTs, prospective and retrospective cohort analyses and published case series. Key Content and Findings: CHF related PEs have a substantial mortality rate and carry a worse prognosis if the PEs are bilateral and transudative in nature. Light's criteria have often shown to misclassify transudative effusions in CHF (pseudo-exudates) and hence measuring serum-pleural albumin gradient is an invaluable tool to accurately identify transudates. Elevated serum and pleural N-terminal pro-B type natriuretic peptide (NT-proBNP) has shown increasing evidence of correctly identifying PEs secondary to CHF. However, they should be considered with the pre-test probability of CHF. Therapeutic thoracentesis and indwelling pleural catheter (IPC) placement may be necessary if medical management has failed. PEs can also occur secondary to pericarditis and are often small, bilateral and exudative. PCIS also results in PEs and are commonly seen in post-coronary artery bypass graft (CABG) surgery. Both entities need management of the underlying cause first, but in cases where PEs are refractory, individualised pleural interventions may be necessary. Conclusions: This comprehensive narrative review provides valuable insights into the aetiology, diagnosis and management of PEs secondary to CHF, pericarditis and PCIS. The aim is to enhance the clinicians' knowledge of this complex and controversial topic to improve patient care of cardiac-related PEs. Ongoing trials in this field will be able to provide valuable insights.
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INTRODUCTION: Haemoptysis can be a feature of lung cancer and patients are typically fast-tracked for evaluation with chest radiography, contrast-enhanced CT and fibreoptic bronchoscopy (FOB). OBJECTIVE: We aim to explore whether FOB should be conducted as a component of the routine evaluation of non-massive haemoptysis, especially in the context of suspected lung cancer. METHODS: MEDLINE, EMBASE and Cochrane Library were searched for studies comparing FOB with CT in the evaluation of non-massive haemoptysis while reporting at least one of the listed primary outcomes. Primary outcomes include sensitivity of diagnostic modality with respect to lung cancer. Secondary outcomes include detection of other aetiologies such as infection. Results were synthesised using a random effects meta-analysis. Sensitivity analysis was performed for patient age group and year of study. Risk of bias assessment was carried out with the Quality Assessment of Diagnostic Accuracy Studies-2 tool. RESULTS: A total of 2273 citations were screened and 11 studies were included, comprising a total sample size of 2015 patients with 226 confirmed cases of lung cancer. A total of 1816 and 1734 patients received a CT scan and FOB, respectively. The pooled sensitivities for detection of lung cancer using CT scan and bronchoscopy were 98% (95% CI 93.0% to 99.0%) and 86% (95% CI 63.0% to 95.0%), respectively. The sensitivity of CT was higher than that of FOB for both primary and secondary outcomes. CONCLUSION: This study suggests that bronchoscopy does not offer significant additional diagnostic benefit in the evaluation of patients presenting with non-massive haemoptysis and a negative CT scan.
