Characteristics and outcome of unplanned hospital admissions in patients with lung cancer: a longitudinal tertiary center study. Towards a strategy to reduce the burden.

BACKGROUND: Unplanned hospital admissions (UHAs) are frequent in lung cancer, but literature on this topic is scarce. The aim of this study is to gain insight in the demographics, patterns of referral, causes, presenting symptoms, and final outcome of these UHAs. A strategy to improve quality of care and reduce the number and cost of UHAs was suggested based upon these findings. PATIENTS AND METHODS: In retrospective analysis of all consecutive UHAs in a 6-month period in a tertiary center, demographics, pattern of referral, clinical data, tumor control status, final diagnosis, duration of hospitalization, and outcome were examined. RESULTS: Two hundred seven UHAs were recorded. Male/female ratio was 185/62, mean age 65.5 years, performance status (PS) on admission 0-1 in 32 %, 2 in 37.2 %, and 3-4 in 30.8 % of patients. Patient referral occurred by general practitioner in 33.6 % or specialist in 25.5 % and in 40.9 % on own initiative. UHAs were therapy-related in 23.9 %, cancer-related in 47.4 %, comorbidity-related in 19.4 %, or of unclear nature in 9.3 %. Most frequent causes were infections (21.9 %) and respiratory problems (17.0 %). Mean length of stay was 9.5 days. Final outcome was 10.1 % mortality, 6.9 % hospice care transfers, and 79.4 % home returns (including 18.2 % same day returns). CONCLUSION: UHAs in lung cancer were more cancer- than therapy-related. Majority of patients (2/3) were not seen by their general practitioner. A significant number of same day returns were noted. UHAs in patients with poor PS, uncontrolled cancer and cancer-related events had the worst outcome. This work is a first step in identifying specific characteristics of UHAs in lung cancer patients, which may lead to strategies to reduce the burden of UHAs.

Malignant pleural mesothelioma: visual assessment by using pleural pointillism at diffusion-weighted MR imaging.

PURPOSE: To evaluate the diagnostic accuracy of the visual assessment of malignant pleural mesothelioma (MPM) on magnetic resonance (MR) images by using two known visual markers (mediastinal pleural thickness and shrinking of the lung) and a newly introduced one (pleural pointillism). MATERIALS AND METHODS: With the approval of the local ethics committee, 100 consecutive patients (mean age, 61.4 years; age range, 18-87 years; 75 men, 25 women) suspected of having MPM pleural abnormalities underwent positron emission tomography/computed tomography and MR imaging, including diffusion-weighted (DW) MR imaging, followed by explorative thoracoscopy or guided biopsy with histopathologic confirmation. Because visual assessment is still the preferred method of image interpretation, the diagnostic accuracy of mediastinal pleural thickening, shrinking lung (hemithorax volume decrease due to fibrosis), and pleural pointillism were examined. Pleural pointillism was denoted by the presence of multiple, hyperintense pleural spots on high-b-value DW images. Histopathologic findings in the surgical specimen served as the reference standard. McNemar tests with Bonferroni correction were used to assess differences in accuracy among the three examined markers. RESULTS: Of 100 patients, 33 had benign pleural alterations, and 67 had malignant pleural diseases (MPDs); 57 of 67 had MPM. A total of 78 patients received a correct diagnosis (benign vs malignant) on the basis of mediastinal pleural thickening (sensitivity, 81%; specificity, 73%; accuracy, 78%); and 66 patients, on the basis of shrinking lung (sensitivity, 60%; specificity, 79%; accuracy, 66%). The correct diagnosis was indicated on the basis of pleural pointillism in 88 patients (sensitivity, 93%; specificity, 79%; accuracy, 88%). CONCLUSION: Visual assessment of pleural pointillism on high-b-value DW images is useful to differentiate MPD from benign alterations, performing substantially better than mediastinal pleural thickness and shrinking lung, and might obviate unnecessary invasive procedures for MPM.

Extrapulmonary lymphangioleiomyomatosis: a wolf in sheep's clothing.

We present a case of a 32-year-old woman who was diagnosed with lymphangioleiomyomatosis (LAM) after detecting a mass in the upper anterior mediastinum. Two years after presentation another metastatic localisation of LAM occurred in the cervical region. With this article we would like to highlight the fact that there are still a lot of unanswered questions, especially regarding the best management of extrapulmonary LAM.

Azithromycin for treatment of hospitalised COVID-19 patients: a randomised, multicentre, open-label clinical trial (DAWn-AZITHRO).

BACKGROUND AND OBJECTIVES: Azithromycin was rapidly adopted as a repurposed drug to treat coronavirus disease 2019 (COVID-19) early in the pandemic. We aimed to evaluate its efficacy in patients hospitalised for COVID-19. METHODS: In a series of randomised, open-label, phase 2 proof-of-concept, multicentre clinical trials (Direct Antivirals Working against the novel coronavirus (DAWn)), several treatments were compared with standard of care. In 15 Belgian hospitals, patients hospitalised with moderate to severe COVID-19 were allocated 2:1 to receive standard of care plus azithromycin or standard of care alone. The primary outcome was time to live discharge or sustained clinical improvement, defined as a two-point improvement on the World Health Organization (WHO) ordinal scale sustained for at least 3 days. RESULTS: Patients were included between April 22 and December 17, 2020. When 15-day follow-up data were available for 160 patients (56% of preset cohort), an interim analysis was performed at request of the independent Data Safety and Monitoring Board. Subsequently, DAWn-AZITHRO was stopped for futility. In total, 121 patients were allocated to the treatment arm and 64 patients to the standard-of-care arm. We found no effect of azithromycin on the primary outcome with a hazard ratio of 1.044 (95% CI 0.772-1.413; p=0.7798). None of the predefined subgroups showed significant interaction as covariates in the Fine-Gray regression analysis. No benefit of azithromycin was found on any of the short- and longer-term secondary outcomes. CONCLUSION: Time to clinical improvement is not influenced by azithromycin in patients hospitalised with moderate to severe COVID-19.

Screening in cryptogenic brain abscess: Do not forget pulmonary arteriovenous malformations.

BACKGROUND: Brain abscess usually occurs secondary to trauma, through contiguous spread (e.g.; dental infections, [paranasal] sinusitis, otitis, and mastoiditis), after intracranial neurosurgical procedures, or through hematogenous spread in case of an arteriovenous (AV) shunt, for example; atrial septum defect. Although uncommon, another possible cause of AV shunt which can facilitate brain abscess is a pulmonary arteriovenous malformation (PAVM). We report a case of brain abscess secondary to a solitary PAVM and review the literature. CASE DESCRIPTION: A 74-year-old male patient presented with headaches, fatigue, low-grade fever, and homonymous hemianopsia. He was diagnosed with a brain abscess in the left occipital lobe. A chest computed tomography (CT) with intravenous (IV) contrast was performed because of fever and respiratory insufficiency in a period where screening for COVID-19 in suspected patients was important. A solitary PAVM of the left lung was diagnosed. Initial stereotactic burr hole drainage of the abscess was insufficient and resection of the abscess was deemed necessary. Routine workup did not reveal any additional pathology apart from the PAVM. After treatment of the cerebral abscess, the PAVM was treated with embolization using an endovascular plug. CONCLUSION: It is recommended to screen for PAVM by chest CT with IV contrast in patients with brain abscess when no obvious source of infection can be identified.