Papillary fibroelastoma
Encyclopedia
A papillary fibroelastoma is a primary tumor of the heart
that typically involves one of the valves of the heart
. Papillary fibroelastomas, while considered generally rare, make up about 10 percent of all primary tumors of the heart. They are the third most common type of primary tumor of the heart, behind cardiac myxomas
and cardiac lipoma
s.
.
The diagnosis
is confirmed by pathology
. Histologically, papillary fibroelastomas have branching avascular papillae
, composed of collagen
, that are covered by endothelium
.
, chest pain
, heart attack
, stroke
and sudden cardiac death
.
Symptoms due to papillary fibroelastomas are generally due to either mechanical effects of the tumor or due to embolization of a portion of the tumor to a distal organ. In particular, chest pain or syncope may be due to transient occlusion of the left main coronary artery
by the tumor, while a heart attack or sudden cardiac death may be due to embolization of a portion of the tumor into a coronary artery.
If the papillary fibroelastoma is associated with symptoms, surgical excision is generally recommended for relief of symptoms. A minimally invasive approach may be possible if the tumor involves the aortic valve
or right atrium. In the case of aortic valve involvement, excision of the tumor is often valve-sparing, meaning that replacement of the valve with a prosthetic valve
is not necessary. Repair of the native valve with a pericardial patch has been described.
Primary tumors of the heart
The primary tumors of the heart are tumors that arise from the normal tissues that make up the heart. This is in contrast to secondary tumors of the heart, which are typically either metastatic from another part of the body, or infiltrate the heart via direct extension from the surrounding...
that typically involves one of the valves of the heart
Heart
The heart is a myogenic muscular organ found in all animals with a circulatory system , that is responsible for pumping blood throughout the blood vessels by repeated, rhythmic contractions...
. Papillary fibroelastomas, while considered generally rare, make up about 10 percent of all primary tumors of the heart. They are the third most common type of primary tumor of the heart, behind cardiac myxomas
Myxoma
A myxoma is a tumor of primitive connective tissue. It is the most common primary tumor of the heart in adults, but can also occur in other locations....
and cardiac lipoma
Lipoma
A lipoma is a benign tumor composed of adipose tissue. It is the most common form of soft tissue tumor. Lipomas are soft to the touch, usually movable, and are generally painless. Many lipomas are small but can enlarge to sizes greater than six centimeters. Lipomas are commonly found in adults...
s.
Diagnosis
Papillary fibroelastoma are typically found and accurately diagnosed by imagingMedical imaging
Medical imaging is the technique and process used to create images of the human body for clinical purposes or medical science...
.
The diagnosis
Diagnosis
Diagnosis is the identification of the nature and cause of anything. Diagnosis is used in many different disciplines with variations in the use of logics, analytics, and experience to determine the cause and effect relationships...
is confirmed by pathology
Pathology
Pathology is the precise study and diagnosis of disease. The word pathology is from Ancient Greek , pathos, "feeling, suffering"; and , -logia, "the study of". Pathologization, to pathologize, refers to the process of defining a condition or behavior as pathological, e.g. pathological gambling....
. Histologically, papillary fibroelastomas have branching avascular papillae
Papilloma
Papilloma refers to a benign epithelial tumor growing exophytically in finger-like fronds. In this context papilla refers to the projection created by the tumor, not a tumor on an already existing papilla . When used without context, it frequently refers to infections caused by human...
, composed of collagen
Collagen
Collagen is a group of naturally occurring proteins found in animals, especially in the flesh and connective tissues of mammals. It is the main component of connective tissue, and is the most abundant protein in mammals, making up about 25% to 35% of the whole-body protein content...
, that are covered by endothelium
Endothelium
The endothelium is the thin layer of cells that lines the interior surface of blood vessels, forming an interface between circulating blood in the lumen and the rest of the vessel wall. These cells are called endothelial cells. Endothelial cells line the entire circulatory system, from the heart...
.
Symptoms
A papillary fibroelastoma is generally considered benign, however can be associated with syncopeSyncope (medicine)
Syncope , the medical term for fainting, is precisely defined as a transient loss of consciousness and postural tone characterized by rapid onset, short duration, and spontaneous recovery due to global cerebral hypoperfusion that most often results from hypotension.Many forms of syncope are...
, chest pain
Angina
Angina pectoris, commonly known as angina, is chest pain due to ischemia of the heart muscle, generally due to obstruction or spasm of the coronary arteries . Coronary artery disease, the main cause of angina, is due to atherosclerosis of the cardiac arteries...
, heart attack
Myocardial infarction
Myocardial infarction or acute myocardial infarction , commonly known as a heart attack, results from the interruption of blood supply to a part of the heart, causing heart cells to die...
, stroke
Stroke
A stroke, previously known medically as a cerebrovascular accident , is the rapidly developing loss of brain function due to disturbance in the blood supply to the brain. This can be due to ischemia caused by blockage , or a hemorrhage...
and sudden cardiac death
Sudden Cardiac Death
Sudden cardiac death is natural death from cardiac causes, heralded by abrupt loss of consciousness within one hour of the onset of acute symptoms. Other forms of sudden death may be noncardiac in origin...
.
Symptoms due to papillary fibroelastomas are generally due to either mechanical effects of the tumor or due to embolization of a portion of the tumor to a distal organ. In particular, chest pain or syncope may be due to transient occlusion of the left main coronary artery
Left coronary artery
The left coronary artery, abbreviated LCA and also known as the left main coronary artery , arises from the aorta above the left cusp of the aortic valve.-Branching:...
by the tumor, while a heart attack or sudden cardiac death may be due to embolization of a portion of the tumor into a coronary artery.
Treatment
If the tumor is found incidentally in an asymptomatic person, the treatment approach is controversial. Certainly a conservative approach is warranted in certain individuals. If the tumor is large and pedunculated, a case may be made for surgical excision prior to symptoms developing due to the higher risk of embolism. However, this is still considered controversial.If the papillary fibroelastoma is associated with symptoms, surgical excision is generally recommended for relief of symptoms. A minimally invasive approach may be possible if the tumor involves the aortic valve
Aortic valve
The aortic valve is one of the valves of the heart. It is normally tricuspid , although in 1% of the population it is found to be congenitally bicuspid . It lies between the left ventricle and the aorta....
or right atrium. In the case of aortic valve involvement, excision of the tumor is often valve-sparing, meaning that replacement of the valve with a prosthetic valve
Aortic valve replacement
Aortic valve replacement is a cardiac surgery procedure in which a patient's failing aortic valve is replaced with an alternate healthy valve. The aortic valve can be affected by a range of diseases; the valve can either become leaky or partially blocked...
is not necessary. Repair of the native valve with a pericardial patch has been described.