Cardiac Myeloid Sarcoma: A 1-kg Heart
Paul Bamford1,2, Kelsey E Gardiner1, Michael D Parkinson3
1Gosford Hospital, Gosford, New South Wales, Australia.
JACC. Case Reports
|July 28, 2021
Summary
Cardiac myeloid sarcoma is a rare complication of acute myelomonocytic leukemia. This case highlights its fatal progression to decompensated heart failure, emphasizing the need for early detection in leukemia patients with cardiac symptoms.
Area of Science:
- Cardiology
- Hematology
- Oncology
Background:
- A 53-year-old male with acute myelomonocytic leukemia (AMML) in remission presented with pleurisy.
- Cardiac involvement in leukemia is uncommon but can be severe.
Purpose of the Study:
- To report a rare case of cardiac myeloid sarcoma.
- To illustrate the diagnostic challenges and fatal outcome of this condition.
Main Methods:
- Transthoracic echocardiography was used to monitor cardiac function.
- Autopsy was performed to confirm the diagnosis.
Main Results:
- Echocardiography revealed progressive left ventricular wall thickening and declining systolic function.
- Autopsy confirmed an enlarged heart (>1 kg) due to cardiac myeloid sarcoma.
- The patient died from decompensated heart failure.
Conclusions:
- Cardiac myeloid sarcoma can present insidiously in patients with a history of leukemia.
- This entity can lead to rapid cardiac decompensation and death.
- Increased awareness and cardiac monitoring are crucial for leukemia patients with cardiac symptoms.
Related Concept Videos
Cardiomyopathy III: Hypertrophic Cardiomyopathy
101
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
101
Cardiomyopathy I: Introduction and Classification
140
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
140
Cardiomyopathy IV: Restrictive Cardiomyopathy
129
Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
129
Cardiomyopathy II: Dilated Cardiomyopathy
87
Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
87
Location and Orientation of the Heart
6.1K
The human heart, despite its modest size and weight, is an organ of remarkable strength and endurance. Roughly the size of a fist, the heart weighs between 250 and 350 grams and is nestled within the mediastinum, the medial cavity of the thorax. It extends obliquely for about 12 to 14 cm, resting on the superior surface of the diaphragm. The heart is positioned anterior to the vertebral column and posterior to the sternum, with two-thirds of its mass lying to the left of the midsternal line.
6.1K


