Can a lipoma be cancerous
Sarah Silva
Updated on April 19, 2026
Lipomas are not cancer. Cancerous tumours of the fat cells are called liposarcomas. They are a type of soft tissue sarcoma. It is very rare for lipomas to turn into a cancerous sarcoma.
How do I know if my lipoma is cancerous?
These tests include: Biopsy: A doctor uses a needle to take a sample of tissue from the tumor. Reviewing the cell sample under a microscope can identify features of liposarcoma. Imaging tests: Tests such as CT scans and MRIs help doctors locate the tumor and determine if it is cancerous or benign.
When should I worry about a lipoma?
They are often painful, swollen, and might lead to changes in weight. If you can see and feel a small, soft growth right under the skin, it’s probably just a lipoma. However, if you’re experiencing concerning symptoms and feel lumps in your abdomen or thighs, a visit to the doctor is necessary.
How can you tell the difference between lipoma and liposarcoma?
They both form in fatty tissue, and they both cause lumps. But these are two very different conditions. The biggest distinction is that lipoma is noncancerous (benign) and liposarcoma is cancerous (malignant). Lipoma tumors form just under the skin, usually in the shoulders, neck, trunk, or arms.Should all lipomas be biopsied?
In most lipoma cases, a biopsy is not necessary to confirm the diagnosis. After the lipoma is removed, a biopsy will be done on a sample of the tissue. Under a microscope, lipomas often have a classic appearance with abundant mature fat cells.
What size lipoma should be removed?
All lipomas in the upper extremities measuring larger than 5 cm in a single dimension should be surgically removed due to malignant potential.
How can you tell the difference between a lipoma and lymphoma?
Lipomas can appear on most parts of the body and are very common. Although it is indeed true that many providers can feel a lipoma, which tends to feel rubbery, and can make the diagnosis of lipoma, there is no way to be 100% sure without a biopsy. Lymph nodes harboring lymphoma tend to be firmer.
Is an atypical lipoma cancerous?
Atypical lipomatous tumours are rare tumours which can develop in the soft tissues of the body. This could be in any part of the body, but they are more common in the thigh and arm. They are benign (non-cancerous) tumours but can have a tendency to recur.Can lipomas be misdiagnosed?
The lipoma-like hibernoma subtype is rare and can be misdiagnosed as atypical lipoma or well-differentiated liposarcoma. Here we describe an example of this rare tumor.
Do lipomas hurt when pressed?When you press on the lipoma, it may feel doughy. It will move easily with finger pressure. They don’t normally hurt, but they can cause pain if they bump against nearby nerves or have blood vessels running through them.
Article first time published onWhat does it mean if a lipoma hurts?
Most lipomas are symptomless, but some are painful when applying pressure. A lipoma that is tender or painful is usually an angiolipoma. This means the lipoma has an increased number of small blood vessels. Painful lipomas are also a feature of adiposis dolorosa or Dercum disease.
Can an ultrasound tell the difference between lipoma and liposarcoma?
A well-differentiated, peripheral liposarcoma is usually hyperechoic and may be indistinguishable from a lipoma; however, Doppler ultrasonography studies reveal that a liposarcoma is more vascular than a lipoma.
Can a lipoma grow into muscle?
Lipomas are the most common type of soft tissue mesenchymal tumors. They are typically located subcutaneously and consist of mature fatty tissue. When they occur under the enclosing fascia, they are called deep-seated lipomas. Infrequently, lipomas can arise inside the muscle and are called intramuscular lipomas.
What is the main cause of lipoma?
What causes a lipoma? Healthcare providers aren’t sure what causes lipomas to grow. They are inherited (passed down through families). You’re more likely to develop a lipoma if someone in your family has one.
What type of doctor removes large lipomas?
Lipoma or cyst removal is commonly performed by several different types of medical specialists. Facial plastic surgeons, plastic surgeons, otolaryngologists, general surgeons, and dermatologists most commonly perform lipoma and/or cyst removal.
What kind of doctor removes lipomas?
Lipoma Treatment Involves Surgical Removal Dermatologists can remove lipomas if they keep growing or become bothersome. Our certified dermatologists examine the lipoma and will decide the best course of action to take to remove it. The treatments include a simple procedure of surgically removing the tumor.
What are the signs that you have a cancerous lymph node?
- Lump(s) under the skin, such as in the neck, under the arm, or in the groin.
- Fever (may come and go over several weeks) without an infection.
- Drenching night sweats.
- Weight loss without trying.
- Itching skin.
- Feeling tired.
- Loss of appetite.
What are the warning signs of lymphoma?
Lymphoma warning signs include swollen lymph nodes, fever, chills, weight loss, shortness of breath, drenching night sweats, tiredness, and swelling in the abdomen. Lymphoma is a cancer of certain cells that are part of the body’s immune system called lymphocytes.
Do you feel ill with lymphoma?
Lymphoma in the stomach can cause swelling of the stomach lining (gastritis), which can cause pain or nausea (feeling or being sick). Lymphoma in the bowel can cause abdominal pain, diarrhoea or constipation.
How painful is lipoma removal?
With local anesthesia, you may still feel pressure or pushing, but you should not feel any pain. If your lipoma is large or deep, you may be given general anesthesia. General anesthesia will keep you asleep and free from pain during surgery.
Can a lipoma be removed in a doctor's office?
Most lipomas can be removed in the doctor’s office or outpatient surgery center. The doctor injects a local anesthetic around the lipoma, makes an incision in the skin, removes the growth, and closes the incision with stitches (sutures).
Can a lipoma rupture?
These lipomas are usually seen incidentally on brain imaging, and are usually asymptomatic and do not require treatment. The authors present a case of ruptured intracranial lipoma, discovered in an elderly patient presenting with dizziness and episodes of falls.
Are lipomas hard or soft?
Lipomas are very common. They appear as smooth, soft bumps under the skin. Lipomas range in firmness, and some feel rather hard. The skin over the lipoma has a normal appearance.
Can lipoma be seen on MRI?
Superficial lipomas can almost always be diagnosed clinically. In cases where imaging is obtained, lipomas have a characteristic appearance on ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI). Large lipomas may appear as a radiolucency on radiographs, but the finding is not diagnostic.
Can a liposarcoma be mistaken for a lipoma?
Lipomas can be confused with malignant (cancerous) tumours, called liposarcomas. Your doctor may feel it is best to remove it or take a biopsy so that they can be certain it is a lipoma. They will also make a referral to a specialist.
How long can you live with liposarcoma?
Almost 90 out of every 100 people (almost 90%) with well differentiated liposarcoma survive their cancer for 5 years or more after they are diagnosed. Almost everyone (almost 100%) with well differentiated liposarcoma of the arms or legs will survive their cancer for 5 years or more after they are diagnosed.
Can liposarcoma be seen on ultrasound?
Liposarcoma can be seen on ultrasound. One of the diagnostic imaging tests used to diagnose liposarcoma includes ultrasound. In some cases, ultrasound can be used to help differentiate the type of liposarcoma based on the characteristics found on the sonogram.
How big can a lipoma get?
Lipomas feel soft and may move slightly under the skin when people press down on them. They usually grow slowly over a period of months or years and typically reach a size of around 2–3 centimeters (cm) . Occasionally, people have giant lipomas , which can grow to more than 10 cm.
What is a deep seated lipoma?
Deep-seated lipoma is subfascial benign mesenchymal soft tissue tumors which is consist of white mature adipose cells. They are less common than ordinary superficial types and can be intramuscular or intermuscular lipoma [3]. Intramuscular types are divided into infiltrative and well-circumscribed lipomas.
Do lipomas stop growing?
Lipomas tend to grow slowly, often developing over a period of several months or years. Most stay relatively small, measuring less than two inches across. Most also remain stable, meaning they don’t continue growing once they’ve reached their apparent size.
How big is a liposarcoma?
Lipoma is a very common tumor, generally, of a small size (less than 5 cm) and of superficial aspect whereas liposarcoma is a much rarer tumor of large (more than 5 cm) deep-seated connective tissue spaces, most commonly originating (three out of four times) under the superficial fascia [1].