Overview

Heart cancer refers to abnormal growths that originate in or spread to the heart. These growths are collectively called cardiac tumors. Primary tumors that begin in the heart are extremely rare; more commonly the heart is affected secondarily when cancer from elsewhere spreads there. Primary lesions are often benign, while malignant primary tumors and metastatic deposits carry a worse outlook.

Types and anatomic locations

Cardiac tumors are categorized by whether they arise in the heart (primary) or spread to it (secondary). Common primary benign tumors include:

  • Myxoma – the most frequent primary benign tumor in adults, typically found in the left atrium.
  • Rhabdomyoma – the commonest in children and often linked with tuberous sclerosis.
  • Fibroma, lipoma, hemangioma, and papillary fibroelastoma – each with characteristic locations and risks.

Primary malignant tumors are rarer; angiosarcoma is among the more frequently reported malignant primary types. Metastatic involvement most often comes from lung, breast, melanoma, lymphoma, or leukemia.

Signs, symptoms and diagnosis

Symptoms are variable and depend on tumor size and location. Patients may have breathlessness, chest pain, fainting, palpitations, systemic emboli (stroke or limb ischemia), or signs of congestive heart failure when blood flow is obstructed. Tumors affecting valves can cause murmurs and embolic complications.

  • Initial evaluation commonly uses transthoracic and transesophageal echocardiography.
  • Cardiac MRI and CT provide detailed tissue characterization and anatomic detail.
  • Definitive diagnosis may require surgical biopsy or excision, and histopathology determines benign versus malignant behavior.

Treatment and prognosis

Treatment is tailored to the tumor type and patient status. Symptomatic benign tumors are often managed with surgical removal and can be curative. Malignant primary tumors and metastatic lesions may be treated with combinations of surgery, chemotherapy, and radiotherapy, but outcomes are generally poorer. Supportive and palliative care are important when curative options are limited.

History, epidemiology and notable distinctions

Historically cardiac tumors were most often discovered at autopsy. With modern cardiac imaging, more lesions are detected in living patients, though the condition remains rare compared with tumors elsewhere in the body. Primary cardiac tumors are uncommon relative to metastatic deposits.

Notable facts

  • Because symptoms mimic many common cardiac conditions, diagnosis may be delayed.
  • Some tumors have specific associations: for example, rhabdomyomas with tuberous sclerosis.
  • Management usually involves a multidisciplinary team including cardiology, cardiothoracic surgery, oncology and pathology.

For clinical guidance and patient resources, consult specialized cardiology and oncology centers and authoritative institutional sources for the most up-to-date recommendations.