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Cardiac Relapse of Acute Myeloid Leukemia after Allogeneic Hematopoietic Stem Cell Transplantation
María Facenda-Lorenzo1, Ana Sánchez-Quintana2, Alejandro Quijada-Fumero1
1Servicio de Cardiología, Hospital Universitario de La Candelaria, Carretera del Rosario No. 145, 38010 Santa Cruz de Tenerife, Spain.
Insights
Secondary cardiac tumors are more common than primary ones. This case highlights a rare extramedullary relapse of acute myeloid leukemia (AML) presenting as a cardiac mass after hematopoietic stem cell transplantation (HSCT).
Area of Science:
- Oncology
- Hematology
- Cardiology
Background:
- Secondary cardiac tumors are more prevalent than primary cardiac tumors.
- Melanoma, lung, breast, and mediastinal carcinomas are common causes of cardiac metastasis.
- Acute myeloid leukemia (AML) is the most common acute leukemia in adults, often treated with chemotherapy and hematopoietic stem cell transplantation (HSCT).
Purpose of the Study:
- To report a rare case of extramedullary relapse of AML.
- To describe the presentation of cardiac involvement as a solid mass.
- To discuss the implications for HSCT outcomes in high-risk AML patients.
Main Methods:
- Case report presentation.
- Review of patient's medical history and treatment course.
- Discussion of relevant literature on extramedullary relapse and cardiac tumors.
Main Results:
- A patient with AML experienced an extramedullary relapse presenting as a cardiac mass.
- This cardiac mass represents a rare site of relapse, distinct from typical sanctuary sites.
- The case underscores the potential for unusual relapse patterns following HSCT for AML.
Conclusions:
- Extramedullary relapse of AML can occur in rare sites like the heart.
- Cardiac involvement in AML relapse requires careful consideration in diagnosis and management.
- This case emphasizes the importance of vigilance for atypical relapse patterns post-HSCT.
Abstract:
Secondary or metastatic cardiac tumors are much more common than primary benign or malignant cardiac tumors. Any tumor can cause myocardial or pericardial metastasis, although isolated or combined tumor invasion of the pericardium is more common. Types of neoplasia with the highest rates of cardiac or pericardial involvement are melanoma, lung cancer, and breast and mediastinal carcinomas. Acute myeloid leukemia (AML) is the most common type of acute leukemia in adults. Initial treatment involves chemotherapy followed by consolidation treatment to reduce the risk of relapse. In high-risk patients, the treatment of choice for consolidation is hematopoietic stem cell transplantation (HSCT). Relapse of AML is the most common cause of HSCT failure. Extramedullary relapse is rare. The organs most frequently affected, called "sanctuaries," are the testes, ovaries, and central nervous system. We present a case with extramedullary relapse in the form of a solid cardiac mass.
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