CTICasesGiant Muscular Ventricular Septal Defect (VSD) with Dual-Chamber Right Ventricle
Imaging findings
During a TAVR workup, CT incidentally revealed a large defect in the interventricular septum, accompanied by significant hypertrophy of the ventricular myocardium. The right ventricle appeared to have a 'dual-chamber' morphology, with the VSD affecting the moderator band.
Key takeaways
Giant muscular ventricular septal defects are rare congenital anomalies that can present in adulthood. In the setting of aortic stenosis and ventricular hypertrophy, these defects may lead to a 'dual-chamber right ventricle' effect, where the RV acts as a second chamber due to RV outflow obstruction, but may not show significant shunting or dilation of the RV itself. Multiple clefts in the septum are sometimes referred to as a sawtooth septum.
AI-assisted summary — may contain errors. Verify against the source video. Learn more
More from this webinar
- Metastatic Renal Cell Carcinoma to Intrapulmonary Lymph NodesNeoplastic
- Barium Aspiration in Head and Neck Cancer Patient (Diffuse Aspiration Bronchiolitis)Exposure
- Disseminated CoccidioidomycosisInfection
- Disseminated Tuberculosis in HIV/AIDSInfection
- Complete Inferior Accessory Fissure with Aberrant Bronchial SupplyCongenital
- Primary Pulmonary Synovial Sarcoma with Pleural RuptureNeoplastic
- Traumatic Pleurocutaneous Fistula with Cartilaginous FractureTrauma
- Lymphangiomatosis with Dystrophic CalcificationCongenital
See all cases from November 14, 2016 →