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Updated: Aug 10, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
[Right atrial blood cyst; report of a case]
N Yashiki1, H Saito, T Imagawa
1Department of Thoracic Surgery, Koseiren Takaoka Hospital, Takaoka, Japan.
Insights
A rare right atrial blood cyst was discovered in a 53-year-old female presenting with an abnormal chest X-ray. Surgical removal confirmed the diagnosis, highlighting this unusual cardiac finding.
Area of Science:
- Cardiology
- Pathology
- Surgical Oncology
Background:
- Cardiac masses are rare, with diverse etiologies including primary tumors, metastatic disease, and benign conditions.
- Right atrial masses can present asymptomatically or with symptoms related to obstruction or embolism.
Observation:
- A 53-year-old female presented with an abnormal shadow on chest X-ray, prompting further investigation.
- Computed tomography (CT) identified a significant 3 cm mass originating from the right atrial septum.
Findings:
- The mass was surgically excised along with a portion of the interatrial septum.
- Histopathological examination revealed the mass to be a blood cyst filled with serous effusion.
Implications:
- This case underscores the importance of comprehensive diagnostic workup for cardiac abnormalities detected incidentally.
- Blood cysts, though rare, should be considered in the differential diagnosis of right atrial masses.
- Surgical intervention is effective for symptomatic or diagnostically uncertain cardiac masses.
Abstract:
A 53-year-old female was admitted to our hospital for examination of an abnormal shadow on chest X-ray. Computed tomography (CT) revealed a large mass of 3 cm in diameter in the right atrium. The mass arose from the right atrial septum and was removed with the interatrial septum. Histological specimen showed a blood cyst contained serous effusion.
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