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Haemangioma or HCC: how radiologists tell them apart on a scan | CION Cancer Clinics
Radiologists tell a haemangioma from liver cancer by how the lump takes up contrast dye over time. A haemangioma fills slowly from the edge and stays bright, while HCC lights up early and then fades. This page explains the patterns, why some haemangiomas look confusing, why cirrhosis or hepatitis B changes how a scan is read, and what to do when the report is unsure. At CION Cancer Clinics, our team goes through your scan, blood test and biopsy reports with you and plans the next step.
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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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On this page
- How do radiologists tell a haemangioma from liver cancer?
- What does each one look like on the scan?
- Why can a haemangioma sometimes look like cancer?
- What happens when the scan cannot decide?
- What do people often misread about a haemangioma report?
- What can this page not tell you?
- Common questions about haemangioma and HCC on a scan
The short answer
How do radiologists tell a haemangioma from liver cancer?
They watch how the lump takes up contrast dye over time. A haemangioma, a harmless tangle of blood vessels, fills slowly from its edge inwards and stays bright. Hepatocellular carcinoma (HCC), the commonest cancer that starts in the liver, lights up all at once early and then fades faster than the liver around it. That fading is called washout.
A haemangioma is the commonest lump found in the liver, and most are picked up by chance on a scan done for something else. In a person with a healthy liver, a typical haemangioma on a good contrast scan is usually enough for a confident answer.
Why the liver around the lump matters
The same picture is read differently in someone with cirrhosis, which is scarring of the liver, or long-standing hepatitis B. In that person the chance of HCC is higher, so radiologists set a stricter bar before calling anything a haemangioma. That is why your report may ask for another scan even when the lump looks harmless.
This page is about cancer that starts in the liver. A lump that has spread from another organ is read differently; see how doctors tell primary from secondary.Side by side
What does each one look like on the scan?
Typical haemangioma
Typical HCC
Ultrasound: a bright, well-edged spot
Ultrasound: often darker, can look like anything
Early phase: blobs of dye at the edge only
Early phase: the whole lump brightens
Later phases: fills in towards the centre and stays bright
Later phases: fades below the liver (washout)
MRI: very bright on fluid-sensitive pictures
MRI: only mildly bright, may show a rim (capsule)
Usually in a healthy liver
Usually in a liver with cirrhosis or hepatitis B
When the picture is not typical
Why can a haemangioma sometimes look like cancer?
Most haemangiomas look textbook. A few do not, and these are the ones that lead to a second scan.
Fast-filling haemangiomas
Small ones can fill with dye all at once in the early phase, just as HCC does. The difference is that they do not wash out. They keep pace with the blood vessels on every later picture.
Haemangiomas in a scarred liver
In cirrhosis, haemangiomas can shrink, harden and fill poorly. They lose the features that normally make them easy to recognise.
Large haemangiomas
A big one may have scarred or clotted areas in the middle that never fill. The edge pattern usually still gives it away.
Scan limits
- Plain ultrasound without dye cannot tell them apart in an at-risk liver
- A CT without all the timed phases misses the key pattern
- Breathing or movement can blur a small lump
Not sure whether this applies to you?
Ask an oncologistIf the report is unsure
What happens when the scan cannot decide?
A full contrast scan
If you had only an ultrasound, the next step is usually a triple-phase CT or an MRI with dye, timed to catch the lump at several moments.
An MRI if the CT is unclear
MRI often settles it, because a haemangioma is so bright on its fluid-sensitive pictures. Some centres add a special liver dye.
A LI-RADS category for at-risk livers
In people with cirrhosis or hepatitis B, the radiologist gives a LI-RADS score. It is a standard scale from definitely benign to definitely HCC.
A repeat scan or a review
A lump that stays uncertain is usually rescanned after an agreed gap. A biopsy is used carefully here, because a haemangioma is full of blood.
Commonly believed
What do people often misread about a haemangioma report?
"It says probable haemangioma, so I can ignore the follow-up."
Probable is not certain. If the report asks for a contrast scan or a repeat, it is because the radiologist could not be sure. Get that scan. In most people it simply confirms the haemangioma.
"A haemangioma can turn into cancer if left alone."
A haemangioma does not turn into liver cancer. The worry is not change. It is whether the first scan read it correctly.
"Every liver lump should be biopsied to be safe."
A good contrast scan is often more useful and safer. Needling a lump made of blood vessels can cause bleeding, and HCC in an at-risk liver can often be confirmed by its scan pattern alone.
"A normal AFP means the lump cannot be cancer."
AFP is a blood marker that is often raised in HCC, but many liver cancers have a normal level. The scan pattern carries more weight than one blood test.
Being straight with you
What can this page not tell you?
It cannot tell you whether your lump is a haemangioma or a cancer. That is decided by a radiologist looking at the actual pictures, in every phase, with your liver history in front of them. A written report is a summary of that reading. Matching your report against the table above is not a substitute.
Who this does not apply to
If you already have a confirmed cancer elsewhere, such as in the bowel or breast, a new liver lump is read for spread, and the comparison here matters less. If you have cirrhosis or hepatitis B, follow your hepatologist's surveillance plan, because the rules for you are stricter. Our page on a lesion in a cirrhotic liver explains why.
Where CION fits
CION arranges contrast CT and MRI through accredited diagnostic partners. The tumour board can review scans you already have and say whether the reading is secure or a further scan would help. Ask for the images on a disc or download link, not only the printed report.
If the report recommends a follow-up scan, keep that date even if you feel completely well.Questions we are asked
Common questions about haemangioma and HCC on a scan
Can an ultrasound alone confirm a haemangioma?
In a person with a healthy liver and a small, typical-looking spot, many doctors accept an ultrasound with a repeat check. In someone with cirrhosis, hepatitis B or a past cancer, an ultrasound is not enough. A contrast CT or MRI is needed before anyone calls it harmless.
What does washout mean on my report?
It means the lump looked brighter than the liver early on and then darker than the liver on later pictures. In an at-risk liver, that pattern is one of the main signs of HCC. A haemangioma does not usually wash out, which is a key difference.
Is CT or MRI better for telling them apart?
Both work when done properly with timed phases. MRI is often better at settling a difficult case, because haemangiomas look very distinctive on it. Which is chosen also depends on kidney function, metal implants and what is available. Our page on CT or MRI explains more.
Why does my report say hypervascular lesion?
It means the lump has a rich blood supply and lights up with dye. Haemangiomas, HCC and several other harmless lumps can all do this, so the word alone does not point to cancer. The radiologist will look at how it behaves on the later pictures.
Should I get a biopsy to be certain?
Usually not first. A haemangioma can bleed if needled, and a good contrast scan answers the question in most people. A biopsy is kept for lumps that stay uncertain after the right scans. Your specialist will explain whether you are in that small group.
Can I have a haemangioma and liver cancer at the same time?
Yes, though it is uncommon. Having a haemangioma does not protect the rest of the liver. This is why people with cirrhosis or hepatitis B stay on regular surveillance even after one lump has been confirmed as a haemangioma.
Will the haemangioma need treatment?
Most never do. Treatment is considered only when one is very large and causing symptoms, or in rare complications. Read when a haemangioma needs treatment for the details.
Can CION review my scan?
Yes. Call the helpline and share the images and the report. A CION oncologist will look at them with the tumour board and tell you whether the reading looks secure, or whether a further scan would give a clearer answer. You will be told plainly either way.
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 College of Radiology — ACR Liver Imaging Reporting & Data System (LI-RADS®)
- Liver UK (formerly British Liver Trust) — Benign liver tumours
- National Cancer Institute — Liver Cancer Diagnosis
- NHS — MRI scan
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
Liver haemangioma: the commonest liver lumpWhat a haemangioma is and what it means for youLI-RADS: what LR-3, LR-4 and LR-5 meanThe score on scans of at-risk livers, decodedA liver lesion in someone with cirrhosisWhy the rules are stricter in a scarred liverSecond opinions on liver imagingWhen a second reading of your scan is worth it
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Does your report leave the question open?
Share your scan images and report, and a CION oncologist will review them with the tumour board and tell you plainly what they show. One helpline serves every CION centre.