Related Experiment Video
Updated: Jun 23, 2026

Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
Published on: July 20, 2022
Nonseptal right atrial aneurysm: case report and review of literature
Kathryn Mersbach1, Aditya Mehra, Joseph Jaworski
1Department of Pathology, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ, USA.
Abstract:
An aneurysm of the portion of the right atrium classically referred to as the subeustachian sinus is reported in a 75-year-old man with cardiac amyloidosis, AL phenotype, related to underlying multiple myeloma. A review of literature confirms the rarity of nonseptal right atrial aneurysms and their propensity to involve the subeustachian area of the right atrium which may be an intrinsic area of weakness in the atrial wall. The coincident amyloidosis in our current case suggests that hemodynamic factors may have played a role in the development of the aneurysm.
Related Concept Videos
Aneurysm I: Introduction
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Aneurysm III: Interprofessional Care
Aortic Regurgitation III: Medical Management
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Aortic Regurgitation I: Introduction

