Kaposi Sarcoma: What It Is, Symptoms, Causes & Treatment

Written by Medicover Team and Medically Reviewed by Dr Girishma J , Dermatologists

Causes
Find a Doctor
Diagnosis
Treatment
FAQs
Book an Appointment

1. Causes 2. Find a Doctor 3. Diagnosis 4. Treatment 5. FAQs

Kaposi Sarcoma (KS) is a complex cancer that arises from the cells that line lymph or blood vessels. It often manifests as tumors on the skin or mucosal surfaces such as inside the mouth, but it can also affect internal organs. Understanding the intricacies of Kaposi Sarcoma, including its causes, symptoms, diagnosis, and treatment options, is critical for patients and healthcare providers alike.

Kaposi Sarcoma is named after Moritz Kaposi, the Hungarian dermatologist who first described the disease in 1872. It is characterized by the formation of lesions that can be purple, red, or brown. These lesions are due to the growth of cancerous cells in the blood vessels and are often accompanied by swelling and pain.

What Are the Different Types of Kaposi Sarcoma?

There are several types of Kaposi Sarcoma, each associated with different risk factors and populations:

Classic Kaposi Sarcoma: Common among older individuals of Mediterranean or Eastern European descent.
Endemic Kaposi Sarcoma: Found in Equatorial Africa, often affecting children and young adults.
Epidemic Kaposi Sarcoma: Associated with HIV infection, prevalent among AIDS patients.
Iatrogenic Kaposi Sarcoma: Occurs in individuals with suppressed immune systems, such as organ transplant recipients.

What Are the Symptoms of Kaposi Sarcoma?

Kaposi Sarcoma symptoms vary depending on the location and extent of the disease. Common symptoms include:

Skin Lesions: Painless, discolored patches or nodules on the skin or mucous membranes. These lesions can appear anywhere on the body.
Lymph Node Swelling: Enlargement of lymph nodes, especially in the groin or armpit areas.
Gastrointestinal Symptoms: If KS affects the digestive system, symptoms may include abdominal pain, nausea, vomiting, or bleeding.
Respiratory Symptoms: In cases where KS involves the lungs, symptoms might include cough, shortness of breath, or chest pain.

What Causes Kaposi Sarcoma?

Kaposi Sarcoma develops following infection with Human Herpesvirus 8 (HHV-8). However, most people infected with HHV-8 never develop Kaposi Sarcoma. The disease usually occurs when the immune system becomes weakened, allowing the virus to trigger abnormal growth of blood vessel cells.

Viral Infection

The primary cause of Kaposi Sarcoma is infection with the human herpesvirus 8 (HHV-8), also known as Kaposi Sarcoma-associated herpesvirus (KSHV). This virus is relatively common, but it does not cause Kaposi Sarcoma in most people. The development of KS usually requires additional factors, such as immunosuppression.

Immunosuppression

Individuals with weakened immune systems, such as those with HIV/AIDS or those on immunosuppressive medication following organ transplantation, are at higher risk of developing Kaposi Sarcoma. The compromised immune system cannot effectively control the proliferation of HHV-8-infected cells, leading to tumor formation.

When Should You See a Doctor for Kaposi Sarcoma?

Consult an dermatologist if skin lesions or other symptoms persist, enlarge, or are associated with a weakened immune system. Seek medical attention if you experience:

Purple, red, or brown patches, plaques, or nodules on the skin or inside the mouth
Persistent swelling of the legs, feet, or lymph nodes
Unexplained bleeding from the digestive tract
Persistent cough, chest pain, or shortness of breath
Rapid growth or spread of skin lesions
Symptoms of Kaposi Sarcoma in individuals with HIV/AIDS or a weakened immune system

Early diagnosis helps prevent complications and improve outcomes.

Find Dermatologists for Kaposi Sarcoma Treatment Near You

How Is Kaposi Sarcoma Diagnosed?

Diagnosis begins with a physical examination and review of medical history, followed by tests to confirm the disease and determine its extent. Imaging studies may be required when internal organ involvement is suspected.

Clinical Examination

Diagnosis often begins with a thorough clinical examination of the lesions. A healthcare provider will assess the size, color, and distribution of the lesions and inquire about any additional symptoms the patient may have.

Biopsy

A definitive diagnosis of Kaposi Sarcoma requires a biopsy. During this procedure, a small sample of the lesion is removed and examined under a microscope for the presence of cancerous cells. Immunohistochemical staining can help identify HHV-8 infection in the tissue.

Imaging Studies

In cases where internal organ involvement is suspected, imaging studies such as X-rays, CT scans, or MRIs may be employed to assess the extent of the disease.

What Are the Best Treatment Options for Kaposi Sarcoma?

Treatment for Kaposi Sarcoma depends on several factors, including the type of KS, the extent of the disease, and the patient's overall health.

Antiretroviral Therapy (ART)

For patients with HIV-associated Kaposi Sarcoma, antiretroviral therapy (ART) is a crucial component of treatment. ART helps to restore immune function, which can lead to a reduction in the number and size of KS lesions.

Localized Treatments

For isolated skin lesions, localized treatments may be effective. These include:

Cryotherapy: Freezing the lesion with liquid nitrogen.
Radiation Therapy: Using targeted radiation to destroy cancerous cells.
Surgical Removal: Excision of small lesions.

Systemic Treatments

In cases where KS is widespread or involves internal organs, systemic treatments may be necessary:

Chemotherapy: Drugs like liposomal doxorubicin can be used to target cancer cells throughout the body.
Immunotherapy: Agents like interferon-alpha can help boost the body's immune response against KS.
Targeted Therapy: Newer treatments target specific pathways involved in KS cell growth and survival.

Your health is everything - prioritize your well-being today.

Consult Kaposi Sarcoma Doctors Today

Can Kaposi Sarcoma Be Prevented and Managed Effectively?

The prognosis of Kaposi Sarcoma varies widely depending on the type and stage of the disease, as well as the patient's immune status. With effective management, many patients can achieve significant remission. Ongoing monitoring and follow-up care are essential to managing the disease and preventing recurrence.

Lifestyle and Supportive Care

Patients with Kaposi Sarcoma benefit from lifestyle modifications and supportive care to improve their quality of life. This includes maintaining a healthy diet, managing stress, and seeking support from healthcare providers, family, and patient support groups.