Heart cancer

• 1. Heart Cancer

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  Heart cancer is so rare that Mayo Clinic sees, on average, only one case each year. A study of 12,487 autopsies in Hong Kong turned up just seven cardiac tumors, and most proved benign. The organ that sustains life turns out to offer a surprisingly inhospitable environment for malignancy. Yet the condition is real, and when it does appear, it can be devastating. What kinds of tumors affect the heart, how does medicine identify them, and what options exist for patients who receive this diagnosis?

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• 2. The Primary Form

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  In a 15-year study at the Hospital of the Medical University of Vienna, researchers identified 113 primary cardiac tumor cases. Of those, 11 were malignant. Among the malignant patients, mean survival was 26.2 months.

  The Surveillance, Epidemiology and End-Results Cancer Registry documented 497 patients with primary malignant cardiac tumors, all diagnosed in the United States during 2000-2001. Angiosarcomas represented 27.3% of those cases, with an incidence of 0.107 per 1,000,000 person-years. Non-Hodgkin's lymphomas accounted for 26.9%, with an incidence of 0.108 per 1,000,000 person-years. The incidence of Non-Hodgkin's lymphoma rose significantly over the study period. Angiosarcoma rates did not change. Patients with lymphoma survived significantly longer than those with angiosarcomas.

  A longer SEER study, covering 1973 to 2011, identified 551 cases of primary malignant cardiac tumors at an incidence of 34 cases per million persons. That rate had doubled over the preceding four decades. Only 46% of patients remained alive one year after diagnosis. Sarcomas and mesotheliomas produced the worst survival figures. Lymphomas did comparatively better.

  Myxomas, fibromas, rhabdomyomas, and hamartomas are the primary heart tumors most likely to be benign. Malignant sarcomas, including angiosarcoma and cardiac sarcoma, are less common but far more dangerous when they occur.

  When matched against tumors in other parts of the body, primary malignant cardiac tumors show consistently worse survival outcomes.

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• 3. Cancer That Arrives

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  Secondary or metastatic heart tumors occur roughly 100 times more often than primary ones. In principle, any malignant tumor in the body can spread to the heart. The only exception is tumors that originate in the central nervous system.

  Malignant melanoma holds a singular position in this landscape. Among all cancers, it spreads to the heart more frequently than any other type. Cardiac involvement occurs in more than half of melanoma cases.

  When the heart is affected by spreading cancer, the resulting symptoms are often indistinguishable from those of many common cardiac conditions.

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• 4. Signs and Diagnosis

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  Dyspnea, particularly when it worsens in a lying position, is among the hallmark symptoms of cardiac tumors. Fatigue, hemoptysis, thoracoabdominal pain, nausea, fever, weight loss, and night sweats may also be present. These symptoms mirror those of far more common heart conditions. The overlap routinely delays an accurate diagnosis.

  Echocardiography, CT scans, and MRI scans are the main diagnostic tools, alongside clinical history. Even so, a cardiac tumor is often not caught through deliberate investigation. In many cases, the disease surfaces only after the patient suffers a stroke or an embolism. That event is triggered by tumor tissue that has broken free and entered the bloodstream.

  The same imaging that reveals the tumor also guides surgeons in assessing whether removal is feasible. That determination shapes the entire course of treatment.

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• 5. Paths of Treatment

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  Complete surgical removal can cure most benign primary cardiac tumors. When a tumor is too large or multiple tumors are present, partially removing it can relieve symptoms. For tumors that are no longer causing problems, yearly echocardiograms may substitute for an operation.

  Malignant primary cardiac tumors grow rapidly and invade critical heart structures. Most are not discovered until surgical removal is no longer a realistic option. Chemotherapy and radiation therapy can sometimes slow tumor growth and relieve discomfort. Frequently, however, they prove ineffective. When that happens, treatment shifts to palliative care.

  Patients whose heart has become a secondary site have typically already received chemotherapy, radiation, or surgery for disease elsewhere in the body. At that stage, the heart represents one affected organ among many. Treatment of the cardiac involvement is generally confined to palliative measures.

  The names attached to a disease this rare carry unusual weight, each representing a statistical improbability made suddenly personal.

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• 6. Lives the Disease Claimed

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  Catherine of Aragon, first wife of Henry VIII, is believed to have died from heart cancer. Eric Carr, drummer for the American rock band Kiss, died of the disease. Their cases span centuries, illustrating that heart cancer has appeared across vastly different eras.

  Virgil Abloh, artistic director for Louis Vuitton and founder of the fashion label Off White, died of cardiac angiosarcoma. Akkaphan Namart, a Thai actor, was diagnosed with the disease in 2022.

  Alexander Belov, a Soviet basketball player, was among those whose lives the disease cut short. Mimi Lerner, a Polish-American mezzo-soprano, died of a heart tumor. Ondrej Buchtela, a Czech professional ice hockey defenceman, developed a sarcoma of the heart muscle.

  Namart was diagnosed in 2022 and died two years later, a course consistent with what medicine has observed in the most aggressive cardiac tumors.

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