Chronic constrictive pericarditis (CP) is an uncommon form of heart failure in which a thickened and often calcified pericardium limits diastolic filling, ultimately reducing cardiac pump performance. Diagnosis can be challenging and may require integrating clinical data with meticulous echocardiographic assessment and cross-sectional cardiac imaging. If non-invasive testing is inconclusive, right heart catheterization remains the gold standard diagnostic test. Classic hemodynamic features of constrictive pericarditis may also be seen in restrictive cardiomyopathy and are often insufficient to establish the diagnosis. Therefore, the preferred hemodynamic criteria of CP include the finding of increased ventricular interdependence and intrathoracic and intracardiac pressure dissociation. However, the presence of concomitant pleural disease may interfere with the catheterization hemodynamics and decrease the accuracy of these criteria as we present in this case report.