Introduction:Mitral-aortic intervalvular fibrosa (MAIVF) is a fibrous tissue among the aortic valve noncoronary cusp, the adjacent left coronary cusp, and the anterior mitral leaflet (1). The pericardium roofs it and is inferiorly enclosed with the left ventricular outflow tract (LVOT) (2). This area has been shown to be comparatively avascular. Accordingly, the injuries from infection/trauma lead to various abnormalities, including pseudoaneurysms and abscesses (3). When a dehiscence happens in this region, a sac is formed among the aortic and mitral valves. A pseudoaneurysm of the mitral-aortic intervalvular fibrosa (P-MAIVF) can be generated by the communication of the sac and LVOT (4). P-MAIVF can be rarely seen; however, mortality is possible. P-MAIVF causes are improper endocarditis, aortic valve surgery, congenital reasons, and blunt chest injuries (5). Among these causes, blunt chest trauma is extremely rare. Here, we have, for the first time, reported late complications of a case of blunt chest wall trauma-induced P-MAIVF.Case History/examination:A 32-year-old man was referred to our clinic following a chest wall injury due to a motorcycle accident because of to-and-fro heart murmurs that prompted more cardiovascular evaluations. He was asymptomatic, and physical examinations were normal except for the mentioned murmur.