Familial atrial myxoma

What it is

A rare, genetic cardiac tumor characterized by the presence of a primary, benign, gelatinous mass located in the atria and composed of primitive connective tissue cells and stroma (resembling mesenchyme) in several members of a family. Clinical presentation depends on the size, mobility and location of tumor, ranging from nonspecific and/or constitutional symptoms to sudden cardiac death, and includes dyspnea, hemoptisis, syncope, fatigue, fever, cutaneous rash, increases in venous pressure and/or peripheral edema.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Adolescent, Adult

Inheritance

Autosomal dominant

Classified as

Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Gene

ICD-10 codes

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references