https://www.selleckchem.com/products/sgi-1027.html g in reduced circulation of the coronavirus, lower daily PM concentration in outdoor air, as well as to meteorological stability and higher temperature that characterize spring season. Further research should be carried out during winter, in presence of higher viral circulation and daily PM exceedances. Ascending aortic aneurysms (AsAA) remain a silent killer for which timely intervention and surveillance intervals are critical. Despite this, little is known about the follow-up care patients receive after incidental detection of an AsAA. We examined the pattern of surveillance and follow-up care for these high-risk patients. We identified patients at our institution with incidentally detected AsAAs (>37 mm) between 2013 and 2016. We collected information on patients' aneurysms and clinical follow-up. Logistic regression models related aneurysm size and demographics to whether patients received follow-up imaging or referral. From 2013-2016, 261 patients were identified to have incidentally detected AsAAs among the 21,336 CT scans performed at our institution. The median aneurysm size was 4.2 cm (interquartile range 4.0, 4.4). Only 18 (6.9%) of the identified patients were referred to a cardiac surgeon for evaluation and only 37.9% of the identified patients had a follow-up chest CT scan within 1 year of detection. 34% had an echocardiogram. The median follow-up duration for the study was 5 years. Logistic regression models showed that aneurysm size and family history were significant predictors of whether a patient was referred to a cardiac surgeon (odds ratio 10.34, 95% confidence interval = 2.3 - 47.9), but not whether the patients received follow-up imaging. Among 261 patients with incidentally detected AsAAs, only a third received any follow-up imaging within one year after detection, with very low clinical penetrance for expert referral. Surveillance of this high-risk patient population appears insufficient and