A case report: multiple right ventricular diverticula with constrictive pericarditis and right heart failure

Abstract

Background Right ventricular diverticula (RVD) are very rare congenital anomalies and their association with constrictive pericarditis is even rarer. So far, only one case has been published in literature. Case summary We report a case of multiple congenital RVD with constrictive pericarditis and right heart failure which was incidentally identified on surveillance computed tomography (CT) for abdominal lymphangioma. Interval CT, echocardiography, and cardiac magnetic resonance imaging (CMR) studies were performed and reviewed. Computed tomography abdomen showed hepatic congestion with features of portal hypertension, increasing size of the RVD on review of serial CTs, and eccentric foci of pericardial calcification. Echocardiography performed for breathlessness demonstrated supranormal early diastolic tissue velocities with average of 19.8 cms−1 and a septal bounce phenomenon on m-mode imaging suggesting constrictive physiology, which triggered a CMR referral. Cardiac magnetic resonance imaging HASTE and right ventricular (RV) outflow tract imaging showed four outpouchings along RV free wall, the largest measuring 4.5 × 2 cm with a sizeable neck. These outpouchings displayed a trabecular network and/or were contractile aiding the diagnosis of diverticula as opposed to aneurysms. Right ventricular function was moderately compromised, whereas left ventricular function was preserved. Discussion Right ventricular diverticula can be associated with, and potentially be causative of, pericardial thickening and calcification eventually leading to constrictive pericarditis and heart failure.

Huge congenital right ventricular diverticulum in tetralogy of Fallot with pulmonary atresia: A double trouble

“…advised that resection is justified to prevent ventricular failure if paradoxical motion appears 2 . Furthermore, surgical resection for the diverticulum could be required, especially in adulthood, to guard against potential complications, although infrequent, such as thrombosis, arrhythmia, or failure 6,7 …”

Giant Left Atrial Appendage Aneurysm and Right Ventricular Diverticulum : A Very Rare Association

“…These anomalies can occur at any age from the fetal period [6], young age [2,5,7,8] to adulthood most often between the second and fourth decade [9,10]. These two entities are most often asymptomatic, discovered incidentally, or sometimes symptomatic, revealing themselves by dyspnea, palpitations and above all serious complications such as rhythm disorders, thromboembolic complications and sudden death with vital prognosis involved [9][10][11], which is why it is necessary that surgical management follows the diagnosis [4]. The fact that revelation mode is a pericardial effusion in this case, is not rare as it has been described previously [4,5,12].…”