Cardiomegaly (also known as Enlarged Heart, Heart, Enlarged): Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart f

NIH MeSH · D006332Diseases

Cardiomegaly

Also known asEnlarged Heart · Heart, Enlarged · Heart Enlargement · Enlargement, Heart · Cardiac Hypertrophy · Cardiac Hypertrophies · Hypertrophies, Cardiac · Hypertrophy, Cardiac · Heart Hypertrophy · Heart Hypertrophies · Hypertrophies, Heart · Hypertrophy, Heart

Definition

Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure (HEART FAILURE) or several forms of CARDIOMYOPATHIES.

MeSH classification

  • C14.280.195
  • C23.300.775.250

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Common questions about Cardiomegaly

What does Cardiomegaly mean in medicine?
Enlargement of the HEART, usually indicated by a cardiothoracic ratio above 0.50. Heart enlargement may involve the right, the left, or both HEART VENTRICLES or HEART ATRIA. Cardiomegaly is a nonspecific symptom seen in patients with chronic systolic heart failure (HEART FAILURE) or several forms of CARDIOMYOPATHIES. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Cardiomegaly known by any other names?
Yes. Cardiomegaly is also referred to as Enlarged Heart, Heart, Enlarged, Heart Enlargement, Enlargement, Heart in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Cardiomegaly sit in the medical classification?
Cardiomegaly falls under the broader medical category "Diseases" in the MeSH hierarchy (tree numbers: C14.280.195, C23.300.775.250). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Cardiomegaly?
For a plain-language explanation of Cardiomegaly - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Cardiomegaly" above.

Source: NIH MeSH 2026 (D006332) — National Library of Medicine, public domain. View official MeSH record ↗