Primary cardiac sarcoma after breast cancer

Area of Science:

• Oncology
• Cardiovascular Pathology
• Radiation Oncology

Background:

• Primary cardiac sarcomas are rare and associated with poor prognosis.
• Postradiation sarcoma is a known complication following cancer treatments like radiotherapy.
• Previous therapies for breast cancer can complicate subsequent treatment options.

Observation:

• A 56-year-old woman with a history of stage IIA breast cancer developed symptoms including fever, dyspnea, and leg edema.
• Echocardiography revealed a left atrial mass, later diagnosed as an intermediate-grade sarcoma.
• The patient had undergone mastectomy, chemotherapy, radiotherapy, and hormonotherapy for breast cancer, followed by treatment for pulmonary metastases.

Findings:

• Surgical resection of the cardiac sarcoma followed by chemoradiation therapy resulted in a 3-year disease-free survival.
• The patient remained alive with no tumor regrowth or metastasis at the 3-year follow-up.
• Histological analysis confirmed the tumor as a sarcoma of intermediate differentiation.

Implications:

• This case underscores the potential for developing secondary malignancies, such as cardiac sarcoma, after extensive cancer treatment.
• The management of postradiation sarcoma presents a therapeutic challenge, particularly when prior treatments limit further therapeutic options.
• Successful multimodal treatment involving surgery and chemoradiation offers a potential strategy for managing this rare complication.