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A rare cardiac tumor was found to be splenic tissue, obstructing blood flow in the right heart. This case highlights unusual origins for cardiac tumors, possibly related to accessory spleens or lymphoid tissue implantation.
Area of Science:
- Cardiovascular Pathology
- Surgical Oncology
- Histopathology
Background:
- Cardiac tumors are rare, with diverse origins and presentations.
- Right heart obstruction can lead to significant hemodynamic compromise.
- Understanding extragenital tissue presence in the heart is crucial for diagnosis.
Observation:
- A 41-year-old male presented with a large cardiac tumor involving the right atrium and ventricle.
- Cross-sectional echocardiography confirmed significant inflow obstruction to the right heart.
- Surgical resection was performed for the cardiac mass.
Findings:
- Histological examination revealed the atrial tumor possessed characteristics of splenic tissue.
- This finding represents an exceptionally rare occurrence of splenic tissue within the heart.
- The tumor's location caused substantial obstruction of right heart inflow.
Implications:
- The case suggests potential mechanisms for cardiac splenic tissue, including accessory spleen-like origins or lymphoid implantation.
- This challenges conventional understanding of cardiac tumor etiology.
- Highlights the importance of comprehensive histological analysis for diagnosing rare cardiac masses.
Abstract:
A large cardiac tumour occupying most of the right atrium and the right ventricle and causing inflow obstruction to the right heart was confirmed by cross sectional echocardiography in a 41 year old man. After surgical resection histological examination showed that the atrial tumour had the characteristics of splenic tissue. Possible mechanisms for the development of such a tumour include an origin analogous to that of an accessory spleen or the implantation and subsequent growth of lymphoid tissue in a pre-existing superior vena caval or high right atrial angioma.