Medical Oncologist
CION Cancer Clinics
Angiosarcoma of the liver: a rare cancer explained plainly | CION Cancer Clinics
Angiosarcoma of the liver is a rare cancer that starts in the lining of the liver's blood vessels. It is not the common liver cancer, HCC, and it needs a different plan. This page explains what is known to cause it, how doctors confirm it without risking bleeding, which treatments are considered and why a transplant is usually not one of them. At CION Cancer Clinics in Hyderabad, our oncologists explain liver cancer in plain words and plan care around you and your family.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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The short answer
What is angiosarcoma of the liver?
Angiosarcoma of the liver is a rare cancer that starts in the cells lining the small blood vessels inside the liver. It is a primary liver cancer, meaning it began in the liver, but it is a very different disease from the common liver cancer, hepatocellular carcinoma (HCC), and it is treated differently.
Why it is so unfamiliar
Most liver doctors see only a handful of these tumours in a working life. That is why families often hear the name for the first time on a biopsy report and find almost nothing written for patients. It tends to grow quickly, often appears as several spots across the liver, and its blood-filled tissue can bleed.
Is it the same as a haemangioma?
No. A liver haemangioma is also made of blood vessels, but it is harmless and very common. Angiosarcoma is a cancer. The two can look alike on some scans, which is one reason a radiologist may ask for a further scan rather than a quick answer. If you were told to have a follow-up scan for any liver spot, keep that appointment.
Is this the right page for you?
If the cancer started somewhere else and spread to the liver, this page does not apply. Read about primary and secondary liver cancer first.
What is linked to it
What causes angiosarcoma of the liver?
In most people no cause is ever found. A few exposures are known to raise the risk, mostly from workplaces and old medical practices.
Vinyl chloride
A chemical used to make PVC plastic. Long, heavy exposure in older factories was linked to this cancer. Modern safety rules have made this far less common.
Arsenic
Long-term arsenic exposure, from contaminated drinking water or some industries, is linked to several cancers including this one. Groundwater in parts of India has been tested for it.
Old X-ray contrast and radiation
A contrast dye called Thorotrast, used decades ago and long since abandoned, is a known cause. Earlier radiation treatment to the area is a rarer link.
No cause at all
This is the usual situation. It is not caused by anything the person ate, drank or did wrong, and it is not linked to hepatitis B or alcohol in the way HCC is.
It is not inherited in any known pattern and it is not infectious.Not sure whether this applies to you?
Ask an oncologist
!
Go to hospital today
Because this tumour is full of blood vessels, it can bleed inside the abdomen. Sudden, severe tummy pain, a swelling belly, fainting, a racing heart or cold, clammy skin need an emergency department the same day. Do not wait for your next appointment.
Getting to a diagnosis
How do doctors find out it is angiosarcoma?
Symptoms or a scan for something else
Many people first notice pain on the right side, tiredness, weight loss or a swollen belly. Some are found on an ultrasound done for a different reason.
A contrast CT or MRI
CION arranges these scans through diagnostic partners. The pictures show how blood moves through each spot, which helps separate a harmless haemangioma from something more worrying.
A carefully planned biopsy
A tissue sample is the only way to be sure. Because the tumour can bleed, the biopsy is planned by an experienced interventional radiologist at a partner hospital. Read about bleeding after a liver biopsy.
Special stains in the laboratory
The pathologist uses markers that light up blood-vessel cells, such as CD31 and ERG. With a tumour this rare, a second pathology opinion is sensible.
Scans of the rest of the body
A chest scan and sometimes a PET-CT check whether it has reached the lungs, spleen or bones before any plan is made.
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The options, side by side
How is liver angiosarcoma treated?
Option
When the team considers it
Surgery to remove the tumour
Only when the disease is confined to one part of the liver and enough healthy liver remains. This is uncommon at diagnosis.
Chemotherapy, given at CION
The main treatment when the tumour cannot be removed. Paclitaxel and doxorubicin are the drugs most often discussed.
Embolisation through a partner hospital
Mainly to stop or prevent bleeding, rather than to control the cancer itself.
Liver transplant
Generally not offered, because this cancer tends to return in the new liver.
Supportive and symptom care
Alongside every option: pain, appetite, fluid and tiredness, managed by the CION team.
Commonly believed
What families often assume, and what is actually true
"It is liver cancer, so it will be treated like everyone else's liver cancer."
Angiosarcoma is a sarcoma, not HCC. TACE, ablation and the targeted drugs used for HCC are planned differently or not used at all. Make sure every doctor you see knows the exact diagnosis.
"If a transplant replaces the whole liver, the cancer must be gone."
For this tumour, cancer cells have often already travelled in the blood by the time it is found. That is why transplant centres usually advise against it.
"He must have done something to cause this."
Most people with angiosarcoma had no known exposure at all. Searching for blame takes energy the family needs for decisions.
"A biopsy will make it spread."
A carefully planned biopsy is how the right treatment is chosen. The real concern with this tumour is bleeding, which is why the procedure is planned by specialists.
Being straight with you
What this page cannot tell you
It cannot tell you what a spot on your own scan is. Only the full set of images, read together with a biopsy, can answer that. It also cannot tell you how your illness will go. This is a serious cancer, but every person's situation is different, and published figures for a tumour this rare come from small groups of patients.
Where the evidence is thin
Because so few people get it, there are no large trials comparing one treatment with another. Much of what doctors recommend is borrowed from angiosarcoma elsewhere in the body and from other sarcomas in the liver. A good team will say so openly.
Who this does not apply to
Children with a liver tumour are usually dealing with something different, such as hepatoblastoma. People with a benign haemangioma, or with cancer that spread to the liver from another organ, need their own information.
At CION, a case like this goes to the tumour board so that medical oncologists, surgeons and radiologists review the scans and the pathology together.Questions we are asked
Common questions about liver angiosarcoma
Is angiosarcoma of the liver the same as liver cancer?
It is one type of primary liver cancer, but a rare one. The common type is hepatocellular carcinoma. Angiosarcoma starts in the lining of blood vessels and belongs to the sarcoma family, so it behaves and is treated differently. Always use the full name when you speak to a new doctor.
Can liver angiosarcoma be removed with surgery?
Sometimes, when it is found in one part of the liver and has not spread. CION's surgical oncologists assess whether an operation is possible and safe, and your team will tell you where the operation takes place. For most people the disease is too widespread for surgery when it is found.
Which chemotherapy is used?
Paclitaxel and doxorubicin are the drugs most often discussed, sometimes with others. The choice depends on liver function, blood counts and general fitness. Your medical oncologist will explain the plan and the likely side effects before anything is started.
Why will doctors not offer a liver transplant?
Experience has shown that this cancer usually comes back after a transplant, often quickly, because cells have already travelled beyond the liver. Transplant centres therefore do not usually list people with angiosarcoma. It can feel like a door closing, so ask the team to explain their reasoning.
Is it hereditary? Should our children be tested?
It is not known to run in families, and there is no screening test for relatives. If several family members worked in the same industry with vinyl chloride or arsenic, mention this to the doctor. Otherwise, children and siblings do not need any special checks.
Can it be mistaken for a haemangioma?
On some scans the two can look alike, because both are made of blood vessels. A haemangioma is far more common and is harmless. That is exactly why a radiologist may ask for an MRI or a repeat scan. Do not skip a follow-up scan you have been asked to have.
Where in India is this treated?
It needs a team used to rare tumours: medical oncology, liver surgery, interventional radiology and a pathologist familiar with sarcomas. At CION the medical oncology is given at our centres, and surgery and embolisation are coordinated through NABH-accredited partner hospitals.
What should we bring to a first appointment?
Every scan on a disc or link, all reports, the biopsy report and, if possible, the biopsy slides and blocks for review. Write down any symptoms and any work exposure to chemicals. Call the CION helpline if you are unsure what to collect.
Your Specialists
Meet CION's liver cancer specialists. Bring your scan reports and liver blood tests.
Our medical and surgical oncologists plan liver cancer care together, weighing the tumour and how well your liver works before choosing surgery, a liver-directed procedure or medicines.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- American Cancer Society — What Is Liver Cancer?
- American Cancer Society — Arsenic and Cancer Risk
- National Cancer Institute — What Is Liver Cancer?
- Cancer Research UK — Liver cancer
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Sarcoma in the liverThe wider family of liver sarcomas this tumour belongs toSecond-opinion pathology for a rare liver tumourWhy a rare diagnosis is worth a second look at the slidesEpithelioid haemangioendothelioma of the liverA related blood-vessel tumour that behaves very differentlySarcoma pathology reviewHow sarcoma specialists confirm a diagnosis
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