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Pathology of the heart and conduction system in lymphoma and leukaemia
Insights
Cardiac involvement in non-Hodgkin's lymphoma and T helper cell prolymphocytic leukemia can be extensive, impacting heart structures and function. Awareness is crucial for clinicians managing these hematologic malignancies.
Area of Science:
- Hematology
- Cardiology
- Oncology
Background:
- Non-Hodgkin's lymphoma and T helper cell prolymphocytic leukemia are hematologic malignancies.
- Cardiac involvement in these cancers is not frequently reported but can be severe.
Purpose of the Study:
- To describe the clinical and pathological findings of cardiac infiltration in patients with these specific hematologic malignancies.
- To highlight the potential impact on cardiac function and clinical outcomes.
Main Methods:
- Case series describing clinical and pathological findings.
- Review of medical records for four patients with hematologic malignancies and cardiac involvement.
Main Results:
- Two patients had non-Hodgkin's lymphoma; two had T helper cell prolymphocytic leukemia.
- Cardiac infiltration ranged from microscopic foci to gross tumor deposits.
- Conduction system involvement led to abnormal ECGs, cardiac dysfunction, and adverse outcomes in two patients.
Conclusions:
- Cardiac and conduction system disease should be considered in patients with these lymphomas.
- Clinicians must be aware of cardiac manifestations, especially with new chemotherapeutic agents.
Abstract:
The clinical and pathological findings in two patients with non-Hodgkin's lymphoma and two patients with T helper cell prolymphocytic leukaemia affecting the heart are described. All four patients had extensive malignant disease, with infiltration of multiple organs. Cardiac infiltration varied from microscopic foci in one case, to grossly identifiable tumour deposits destroying and replacing normal heart structures in three cases. Two patients with infiltration of the conduction system had abnormal electrocardiograms and cardiac dysfunction: one died suddenly, and the other died in heart failure. A third patient with widespread cardiac lymphoma did not show any electrocardiographic abnormalities or dysfunction. Clinicians should be aware of the possibility of cardiac and conduction system disease, particularly in the light of the evolution of specific antitumour chemotherapeutic agents.