Cardiac Sarcoidosis: Amazing Scary Heart News

Sarcoidosis is a complex condition that can affect many parts of the body. It leads to serious health problems and can be life-threatening. The disease causes non-caseating granulomas to form in organs like the lungs and lymph nodes.

This infiltrative nature makes it hard to diagnose and treat. It’s a big challenge for doctors and patients alike.

Approximately 150,000 to 200,000 people in the United States have sarcoidosis, with about 27,000 new cases being diagnosed each year. To learn more about sarcoidosis, visit.

It’s important to understand how sarcoidosis affects different organs. Also, knowing about advanced diagnostic techniques is key to finding good treatments.

Key Takeaways

• Sarcoidosis is an infiltrative disease that affects multiple organs.
• The lungs and lymph nodes are the most commonly affected areas.
• Approximately 150,000–200,000 people in the US are affected.
• Advanced diagnostic techniques are important for management.
• Effective treatment strategies depend on understanding the disease’s infiltrative nature.

Understanding Sarcoidosis as an Infiltrative Disorder

Sarcoidosis is a disease that can affect many parts of the body. It’s a classic example of an infiltrative disease. This means it can cause problems in different organs, leading to various symptoms.

Definition and Classification of Infiltrative Diseases

Infiltrative diseases happen when cells or materials build up in tissues. This can cause organs to not work right. Sarcoidosis is one of these diseases because it forms granulomas in organs. Infiltrative disorders can be caused by infections, autoimmune issues, or cancer.

Doctors classify these diseases based on their cause and the organs affected. Sarcoidosis is a systemic granulomatous disease. It can affect any organ but often hits the lungs and lymph nodes.

Hallmark Features of Sarcoidosis

Sarcoidosis has several key features. It’s known for non-caseating granulomas, swollen lymph nodes, and can affect many organs. Symptoms can range from mild to severe. Cardiac involvement can be serious but is often missed.

Sarcoidosis can quietly damage organs without symptoms until it’s too late. Finding and treating it early is very important.

Non-caseating Granulomas: The Infiltrative Signature

Non-caseating granulomas are the main sign of sarcoidosis. These are groups of immune cells that form in response to an unknown antigen. Their presence in organs makes sarcoidosis an infiltrative disorder.

The formation of these granulomas is complex. It involves the immune system not working right. Understanding this is key to finding better treatments, like for heart problems.

The Pathophysiology of Sarcoidosis

Understanding sarcoidosis is key to better treatments and outcomes. It involves non-caseating granulomas in organs due to immune and inflammatory issues.

Immune System Dysfunction in Sarcoidosis

Immune system problems are central to sarcoidosis. It’s caused by an abnormal immune reaction. CD4+ T cells are key in this inflammation. This leads to an overactive response to unknown triggers, causing granulomas.

Formation of Granulomas

Granulomas are the main sign of sarcoidosis. They are made of immune cells like macrophages and T lymphocytes. The process of making granulomas involves immune cell activation and cytokine release. Knowing how granulomas form helps in finding treatments for the inflammation.

Infiltration Mechanisms in Various Organs

Sarcoidosis can hit many organs, like the lungs, lymph nodes, skin, and heart. Each organ is affected differently, causing different symptoms. For example, cardiac sarcoidosis can lead to heart problems like arrhythmias and failure.

Organ/System	Infiltration Mechanism	Clinical Manifestation
Lungs	Granulomatous inflammation in lung parenchyma	Pulmonary symptoms, cough, dyspnea
Heart	Infiltration of granulomas into heart tissue	Arrhythmias, heart failure, cardiac sarcoidosis disease
Skin	Granulomatous inflammation in skin layers	Skin lesions, erythema nodosum
Lymph Nodes	Granulomatous inflammation in lymphoid tissue	Lymphadenopathy

Grasping the pathophysiology of sarcoidosis is vital. It includes understanding immune issues, granuloma formation, and how it affects different organs. This knowledge is essential for creating effective treatments and improving patient care.

Epidemiology of Sarcoidosis in the United States

Understanding sarcoidosis is key to helping those at risk. It’s a big health issue in the U.S., touching many people. It affects different groups in various ways.

Prevalence and Incidence Rates

About 150,000 to 200,000 people in the U.S. have sarcoidosis. Around 27,000 new cases pop up each year. This shows we need more research and better ways to manage it.

The disease’s spread varies by group. Some people are more likely to get it than others. This is due to several factors.

Demographic Patterns

Sarcoidosis hits some groups harder than others. African Americans are more likely to get it than Caucasians. Women also tend to get it more than men, though this can change based on the group studied.

“Sarcoidosis is a disease that can affect anyone, but certain populations are at higher risk. Understanding these demographic patterns is essential for developing targeted screening and treatment programs.”

Racial and Gender Disparities

Racial and gender gaps in sarcoidosis are big. African Americans face a higher risk and often suffer more severe cases. This can lead to more serious health problems.

Demographic Group	Incidence Rate (per 100,000)	Prevalence Rate (per 100,000)
African American Women	35.5	141.4
African American Men	23.8	97.8
Caucasian Women	10.9	44.8
Caucasian Men	8.5	35.5

These gaps highlight the need for specific care plans. Knowing how sarcoidosis spreads helps doctors help more people. This way, they can better serve all their patients.

Multi-Organ Infiltration in Sarcoidosis

Sarcoidosis can affect many organs, leading to different symptoms. It’s a complex condition that makes diagnosis and treatment hard. We’ll look at how it impacts organs like the lungs, lymphatic system, skin, and eyes.

Pulmonary Sarcoidosis

Pulmonary sarcoidosis is common, affecting many patients. It causes symptoms like cough, shortness of breath, and chest pain. High-resolution CT scans and bronchoscopy are key for diagnosis.

The disease can lead to pulmonary fibrosis, which greatly affects quality of life. Treatment often includes corticosteroids and immunosuppressive therapy.

Lymphatic System Involvement

The lymphatic system is often affected by sarcoidosis, leading to lymphadenopathy. This can happen in different lymph node groups. Imaging studies like PET scans help find affected nodes.

Lymphatic involvement can be without symptoms or cause symptoms due to compression or infiltration.

Cutaneous Manifestations

Sarcoidosis can show in the skin, with various lesions like papules, plaques, and nodules. Skin biopsies are vital for diagnosing skin sarcoidosis.

Treatment for skin manifestations varies based on severity. It can include topical corticosteroids or systemic therapy.

Ocular Sarcoidosis

Ocular involvement is a serious complication of sarcoidosis, potentially causing vision loss. Uveitis is a common form, and slit-lamp examinations are key for diagnosis.

Quick treatment with corticosteroids and immunosuppressive agents is needed to avoid permanent damage.

Organ/System	Common Manifestations	Diagnostic Tools	Treatment Approaches
Lungs	Cough, dyspnea, chest discomfort	High-resolution CT, bronchoscopy	Corticosteroids, immunosuppressives
Lymphatic System	Lymphadenopathy	PET scans, lymph node biopsy	Monitoring, corticosteroids
Skin	Papules, plaques, nodules	Skin biopsy	Topical corticosteroids, systemic therapy
Eyes	Uveitis, vision loss	Slit-lamp examination	Corticosteroids, immunosuppressives

Cardiac Sarcoidosis: An Infiltrative Heart Disease

Sarcoidosis can affect the heart, leading to problems like arrhythmias and heart failure. This condition is serious and can be life-threatening. It needs quick diagnosis and treatment.

Prevalence and Clinical Significance

Up to 25% of sarcoidosis patients have heart involvement, as shown by autopsy studies. This shows how important it is. The symptoms can vary, making it hard to diagnose.

Cardiac sarcoidosis can cause a lot of health problems and even death. It’s often missed, so we need to be more aware and improve how we diagnose it.

Pathological Findings in Cardiac Tissue

The main sign of cardiac sarcoidosis is non-caseating granulomas in the heart. These cause inflammation and scarring. This leads to various heart problems.

Granulomas can affect different parts of the heart. This can cause abnormal heart rhythms or even heart failure.

Autopsy Findings vs. Clinical Presentation

There’s often a big difference between what’s found at autopsy and what symptoms show. Many people seem fine but have big heart problems at autopsy.

Characteristics	Autopsy Findings	Clinical Presentation
Prevalence	Up to 25% in sarcoidosis patients	Often underdiagnosed
Pathological Features	Non-caseating granulomas	Varies; can be asymptomatic
Clinical Impact	Significant cardiac involvement	Ranges from asymptomatic to heart failure

It’s key to understand the gap between autopsy findings and symptoms. We must watch for at-risk patients and use the right tests to catch heart problems early.

Clinical Manifestations of Cardiac Sarcoidosis

It’s important to know the signs of cardiac sarcoidosis for early treatment. This condition happens when granulomatous disease affects the heart. It can cause a variety of symptoms.

Cardiac Conduction Abnormalities

Cardiac sarcoidosis often leads to problems with heart rhythm. The disease can disrupt the heart’s electrical system. This can cause different kinds of rhythm problems.

These problems can be mild or severe. In some cases, a pacemaker may be needed.

• First-degree AV block: Delayed conduction between the atria and ventricles.
• Second-degree AV block: Intermittent failure of conduction to the ventricles.
• Third-degree AV block: Complete blockage of conduction, resulting in dissociated atrial and ventricular rhythms.

Arrhythmias and Sudden Cardiac Death

Cardiac sarcoidosis can also cause dangerous heart rhythms. These rhythms can be life-threatening. The inflammation from the disease can affect the heart’s electrical system.

Ventricular tachycardia and ventricular fibrillation are serious rhythms. They can lead to sudden cardiac death. This is a big concern for those with cardiac sarcoidosis.

Common arrhythmias include:

• Ventricular tachycardia
• Ventricular fibrillation
• Atrial fibrillation
• Supraventricular tachycardia

Heart Failure Presentations

Heart failure is another sign of cardiac sarcoidosis. The disease can cause the heart to not work well. This can lead to symptoms like shortness of breath and fatigue.

Managing heart failure in these patients is important. It involves treatments for heart failure and reducing inflammation.

Asymptomatic Cardiac Infiltration

Some people with cardiac sarcoidosis don’t show symptoms. This makes it hard to diagnose. They might not seek medical help until they have a serious heart event.

Regular check-ups and special tests like cardiac MRI are key. They help find heart problems in people with sarcoidosis, even if they don’t feel sick.

Diagnostic Approaches for Infiltrative Sarcoidosis

Getting a correct diagnosis of sarcoidosis is key to managing the disease well and avoiding serious problems. To diagnose infiltrative sarcoidosis, doctors use many tools. These help figure out how far and how severe the disease is.

Tissue Biopsy and Histopathology

Tissue biopsy and histopathology are the top ways to diagnose sarcoidosis. A biopsy takes a tissue sample. Then, it’s checked for non-caseating granulomas, a key sign of sarcoidosis. This helps tell sarcoidosis apart from other diseases with similar symptoms.

Getting a biopsy might be a bit invasive. But, it’s very important for making a diagnosis. Where the biopsy is taken depends on where the disease is and how easy it is to get to.

Laboratory Markers

Labs play a big part in diagnosing sarcoidosis and seeing how active the disease is. Tests like serum angiotensin-converting enzyme (ACE) levels are often high in people with sarcoidosis. But, these tests aren’t specific to the disease.

Other tests, like a complete blood count (CBC), liver function tests, and calcium levels, help find out if the disease has spread. They also check for any serious side effects.

Pulmonary Function Tests

Pulmonary function tests (PFTs) are very important for checking how sarcoidosis affects the lungs. These tests measure lung size, airflow, and how well the lungs exchange gases. They give important info on how much the lungs are involved.

PFTs can show if the lungs are working too hard to breathe or if there’s a blockage. This helps doctors decide on treatment and keep track of how the disease is doing.

Bronchoscopy and Bronchoalveolar Lavage

Bronchoscopy with bronchoalveolar lavage (BAL) is a great tool for looking at lung sarcoidosis. BAL fluid analysis can show lymphocytosis, a sign of sarcoidosis. It also helps rule out other conditions like infections.

This method also lets doctors get tissue samples for further study. This helps confirm the diagnosis.

Advanced Imaging in Cardiac Sarcoidosis Detection

Advanced imaging is key in finding cardiac sarcoidosis early. This can stop serious damage before it starts. The heart can get damaged by granulomatous cells, leading to heart problems.

Spotting the disease early is vital for good treatment.

FDG-PET Imaging Techniques

FDG-PET (Fluorodeoxyglucose-Positron Emission Tomography) is great for finding heart inflammation. It shows where the heart is most active. This helps doctors see how bad the disease is and if treatments are working.

Cardiac MRI Applications

Cardiac MRI gives detailed heart images. It shows changes in the heart’s structure and function. This is important for diagnosing and planning treatment.

Echocardiography Findings

Echocardiography is a common, non-invasive test. It shows how well the heart works. In cardiac sarcoidosis, it can spot problems like thickened walls or reduced function.

Early Detection Before Structural Damage

Early detection is the best way to manage cardiac sarcoidosis. Advanced imaging helps find the disease early. This means treatments can work better and patients can live better lives.

Diagnostic Criteria for Cardiac Sarcoidosis

To diagnose cardiac sarcoidosis, doctors use specific criteria. This condition causes inflammation in the heart. It can lead to serious heart problems.

Japanese Ministry of Health Criteria

The Japanese Ministry of Health Criteria are well-known for diagnosing cardiac sarcoidosis. They include both histological and clinical diagnoses. A histological diagnosis is confirmed by heart biopsy showing non-caseating granulomas.

A clinical diagnosis is based on symptoms, imaging, and other tests.

Key components of the Japanese Ministry of Health Criteria include:

• Histological diagnosis from cardiac biopsy
• Clinical diagnosis based on specific criteria, including electrocardiographic abnormalities, imaging findings, and other relevant clinical features

Heart Rhythm Society Consensus Statement

The Heart Rhythm Society (HRS) Consensus Statement offers another set of criteria. It focuses on clinical presentation and diagnostic evaluation. The HRS criteria stress the use of advanced imaging like cardiac MRI and FDG-PET for diagnosis.

The HRS Consensus Statement highlights the role of:

• Advanced imaging modalities in detecting cardiac involvement
• Clinical evaluation, including history and physical examination
• Electrocardiographic and echocardiographic findings

Challenges in Definitive Diagnosis

Despite these criteria, diagnosing cardiac sarcoidosis is tough. Symptoms can be vague, and tests may not always confirm the diagnosis. It can also look like other heart conditions.

Challenges include:

• Non-specific clinical presentation
• Limited sensitivity and specificity of some diagnostic tests
• Overlap with other cardiac conditions

We must face these challenges when diagnosing cardiac sarcoidosis. A detailed and team-based approach is needed for an accurate diagnosis.

Treatment Strategies for Systemic Sarcoidosis

Managing systemic sarcoidosis requires a detailed plan. The goal is to lower inflammation and protect organs. Each patient’s treatment is unique, based on their disease severity, affected organs, and overall health.

Corticosteroid Therapy

Corticosteroids are the main treatment for systemic sarcoidosis, mainly for those with organ involvement. Prednisone is often used, with doses adjusted as needed. These drugs help reduce inflammation and improve symptoms but can have long-term side effects.

We watch for side effects like osteoporosis, diabetes, and high blood pressure in patients on corticosteroids. To lessen these risks, we use the lowest dose for the shortest time possible.

Immunosuppressive Medications

For those not responding to corticosteroids or needing long-term treatment, immunosuppressive medications are considered. Options include methotrexate, azathioprine, and cyclophosphamide. These drugs help manage disease activity and reduce corticosteroid doses.

The right immunosuppressive agent depends on the patient’s needs and disease severity. We closely monitor for toxicity and adjust treatment as needed.

Antimalarial Agents

Antimalarial agents, like hydroxychloroquine, are used for cutaneous sarcoidosis. They are effective for mild cases or as a supplement to corticosteroids. These drugs are generally safe but require eye checks for toxicity.

Biologic Therapies

Biologic therapies, like TNF-alpha inhibitors (e.g., infliximab), are promising for tough cases of sarcoidosis. They offer hope for those who haven’t responded to standard treatments.

We choose patients for biologic therapy carefully, considering their disease and risks. Close monitoring is key to manage side effects and ensure treatment success.

Management of Cardiac Sarcoidosis

Treating cardiac sarcoidosis needs a detailed plan. It includes medicines, devices, and lifestyle changes. Each step is tailored to the patient’s specific needs.

Anti-inflammatory Approaches

Corticosteroids are key in fighting inflammation in the heart. They help protect the heart tissue. The doctor will adjust the dose and length of treatment based on how the patient responds and the heart’s condition.

• Corticosteroids: Prednisone is commonly used, with doses ranging from 20 to 60 mg daily.
• Monitoring: Regular checks on the heart and inflammation markers are important.

Antiarrhythmic Medications

Medicines for arrhythmias are vital in cardiac sarcoidosis. The right medicine depends on the arrhythmia and the heart’s health.

1. Beta-blockers help control heart rate and prevent arrhythmias.
2. Antiarrhythmic drugs like amiodarone are used for ventricular arrhythmias.

Device Therapy: Pacemakers and ICDs

Device therapy is key for managing cardiac sarcoidosis. It’s most important for those at risk of dangerous arrhythmias.

• Pacemakers: Manage bradyarrhythmias and heart block.
• Implantable Cardioverter-Defibrillators (ICDs): Needed for those at high risk of ventricular tachycardia or fibrillation.

Heart Failure Management

Heart failure in cardiac sarcoidosis is managed with medicines and lifestyle changes.

• ACE Inhibitors/ARBs: Help reduce afterload and improve heart function.
• Beta-blockers: Crucial for lowering mortality and morbidity in heart failure.
• Lifestyle Modifications: Salt restriction, fluid management, and regular exercise are important.

With a thorough management plan, we can improve outcomes for cardiac sarcoidosis patients. This enhances their quality of life and lowers the risk of complications.

Cardiac Transplantation in Advanced Cases

Advanced cardiac sarcoidosis may need a heart transplant to improve patient outcomes. This condition causes inflammation in the heart, leading to severe heart problems. If other treatments don’t work, a heart transplant is considered.

Indications for Transplantation

Doctors decide on a heart transplant for severe heart failure or dangerous heart rhythms that don’t respond to usual treatments. They look at how much the heart is affected, if other parts of the body are also sick, and the patient’s overall health.

The reasons for a heart transplant in cardiac sarcoidosis include:

• Severe heart failure that doesn’t get better with medicine
• Life-threatening heart rhythms that can’t be treated
• Heart symptoms that greatly lower the quality of life

Post-transplant Outcomes

Thanks to better treatments and care, heart transplant outcomes for cardiac sarcoidosis are getting better. Patients are living longer and enjoying a better quality of life after the transplant.

Outcome Measure	Post-transplant Survival Rate	Rejection Rate
1-year	85%	20%
5-year	70%	35%

Risk of Recurrence in Transplanted Hearts

There’s a worry that the disease could come back in the new heart. But with the right treatment, this risk is low. We keep a close eye on patients for any signs of the disease coming back and adjust their treatment as needed.

Recurrence Prevention Strategies:

• Optimized immunosuppressive regimen
• Regular monitoring for signs of recurrence
• Adjustments to treatment based on clinical findings

In conclusion, heart transplantation is a key treatment for advanced cardiac sarcoidosis. Understanding when to transplant, the outcomes, and the risks helps us give the best care to these patients.

Monitoring Disease Progression and Treatment Response

It’s key to watch how sarcoidosis changes and how treatments work, even more so when it affects the heart. This helps doctors tweak treatments, handle side effects, and make care better. We’ll look at how to keep an eye on sarcoidosis, focusing on imaging, biomarkers, and how well organs work.

Serial Imaging Approaches

Imaging over time is a big help in tracking sarcoidosis and its effects, like on the heart. FDG-PET (Fluorodeoxyglucose-Positron Emission Tomography) and Cardiac MRI are top tools. They show where inflammation is and how the heart is doing.

By checking images often, doctors can see if treatments are working. For example, if FDG-PET shows less activity, it might mean the treatment is helping. But if it shows more, the treatment might need to be stronger.

Biomarker Surveillance

Biomarkers are also key in tracking sarcoidosis. Angiotensin-converting enzyme (ACE) levels, for instance, often go up when the disease is active. While not specific to the heart, they can hint at how active the disease is. Other markers, like soluble interleukin-2 receptor (sIL-2R), can also show how the disease is progressing and how treatments are doing.

Watching these biomarkers, along with how the patient feels and looks on scans, helps doctors make treatment plans that fit each patient. It’s important to look at biomarker results with the whole picture of the patient’s health in mind.

Functional Assessment Methods

Checking how well organs work is vital, and this is true for the heart in sarcoidosis. Echocardiography looks at the heart, and pulmonary function tests (PFTs) check the lungs. These tests show how much organs are affected and if things are getting better or worse.

In the case of heart sarcoidosis, echocardiography can spot problems like a heart that’s not pumping well. Regular checks help doctors adjust treatments to help organs work better and improve how patients feel.

Special Considerations in High-Risk Populations

Black women face special challenges in managing sarcoidosis. Sarcoidosis impacts different groups in different ways. It’s important to understand these differences to provide the best care.

Management in Black Women

Black women are three times more likely to get sarcoidosis than White women. They often have more severe symptoms. It’s key to manage their care with awareness of these disparities and tailored treatments. Important points include:

• Early diagnosis and treatment to avoid organ damage
• Monitoring for heart problems, as they are at higher risk
• Considering cultural and economic factors that affect treatment

Familial Sarcoidosis

Familial sarcoidosis happens when more than one family member has it. Research shows a genetic link, with some genes raising the risk. Knowing family history helps spot those at higher risk and aids in early detection. Key points are:

1. Genetic counseling for families with a history of sarcoidosis
2. Screening first-degree relatives of those diagnosed
3. More research into sarcoidosis genetics to improve treatments

Pregnancy and Sarcoidosis

Pregnancy can affect sarcoidosis differently for women. Some see improvement, while others experience no change or worsening. It’s vital to manage sarcoidosis carefully during pregnancy for the health of both mother and baby. Important considerations include:

• Team care involving obstetricians and sarcoidosis experts
• Watching for complications like preeclampsia
• Adjusting treatments to balance disease control and fetal safety

By recognizing and meeting the unique needs of high-risk groups, we can better help all sarcoidosis patients.

Future Directions in Sarcoidosis Research

Sarcoidosis research is on the verge of a new era. This is thanks to genetic studies, new treatments, and advanced imaging. We will learn more about the disease and find better ways to treat it.

Genetic Studies and Personalized Medicine

Genetic research could change how we understand sarcoidosis. By finding specific genes linked to the disease, we can create treatments that fit each patient. Studies have found that some genes can affect a person’s risk of getting sarcoidosis.

For example, research shows that certain immune-related genes are important. Table 1 lists some key genetic findings in sarcoidosis research.

Gene	Function	Association with Sarcoidosis
HLA-DRB1	Antigen presentation	Strong association with disease susceptibility
TNF-alpha	Inflammatory cytokine	Influences disease severity and manifestations
IL-23R	Immune regulation	Linked to disease risk and progression

Novel Therapeutic Targets

Finding new ways to treat sarcoidosis is a major focus of research. As we learn more about the disease, we find new targets for treatment. For instance, treatments that control the immune system are showing promise.

“The future of sarcoidosis treatment lies in our ability to tailor therapies to the individual, based on their unique genetic and molecular profiles.”Sarcoidosis Researcher

Some new treatments being explored include:

• Biologic agents targeting specific inflammatory pathways
• Small molecule inhibitors to modulate immune responses
• Gene therapy to correct underlying genetic defects

Advances in Imaging Technology

New imaging technologies are also key in sarcoidosis research. Techniques like FDG-PET and cardiac MRI help us diagnose and track the disease. These tools let us find problems early and measure how well treatments are working.

FDG-PET imaging is a valuable tool for finding active inflammation in sarcoidosis. It helps doctors decide on the best treatment and check how well it’s working.

By combining genetic studies, new treatments, and advanced imaging, we can improve care for sarcoidosis patients. Continued research will lead to better management and a better life for those with this complex disease.

Conclusion

Understanding sarcoidosis is key to helping patients. Cardiac sarcoidosis is very serious because it can be deadly. We’ve covered the basics of sarcoidosis, focusing on how it affects the heart.

Tools like FDG-PET imaging and cardiac MRI help find cardiac sarcoidosis. Treatments like corticosteroids and devices are important. With the right care, we can help patients with cardiac sarcoidosis live better lives.

Sarcoidosis is a complex disease that needs careful attention. Keeping up with new ways to diagnose and treat it is important. This way, we can give the best care to those affected by it.

FAQ

References

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