Juvenile myelomonocytic leukaemia (JMML)

Get information on what JMML is, what the symptoms are and what treatment is available.

Chronic myelomonocytic leukaemia (CMML)

CMML is a type of blood cancer. Read about the different types of CMML, symptoms, diagnosis and treatment.

Myeloproliferative neoplasms

Myeloproliferative neoplasms are a group of rare cancers of the bone marrow. Find out what they are and the different types.

Polycythaemia vera (PV)

Polycythaemia vera (PV) is a rare blood cancer that affects the bone marrow.

Essential Thrombocythaemia (ET)

Essential thrombocythaemia is a rare blood cancer that causes a high number of blood cells called platelets to form. These are blood cells involved in blood clotting.


Myelofibrosis is a rare blood cancer. It causes scarring of the bone marrow which can develop into acute leukaemia in some people.

Myelodysplastic syndromes (MDS)

Myelodysplastic syndromes are a group of blood cancers. They are also called myelodysplasia or MDS for short.

Fibrocystic breast changes

Find out about fibrocystic breast changes. These changes are not cancer.

Intraductal papilloma

Ductal papilloma is a benign breast condition. This means it is not cancer.

Atypical hyperplasia in a breast lump

Find out about what atypical cells mean in a breast lump.

What is Courvoisier syndrome?

Courvoisier syndrome is also called Courvoisier's law or Courvoisier's sign. It means that you have jaundice and a gallbladder that is enlarged but is not painful.

Spitz naevus

Spitz naevus is a rare type of mole. It is not cancer.


Angiomyxomas are a rare type of soft tissue tumour (lump). They are not thought of as cancer because they usually grow quite slowly and they don't usually spread to other parts of the body.


Lipomas are non cancerous lumps caused by an overgrowth of fat cells.

Gorlin syndrome

Gorlin syndrome is also called naevoid basal cell carcinoma syndrome (NBCCS). It's a rare condition where people might develop a type of skin cancer called basal cell cancer of the skin.

Barrett's oesophagus

Barrett’s oesophagus means that some cells in the lining of your food pipe have started to change.


A schwannoma is a tumour of the tissue that covers nerves, called the nerve sheath. Schwannomas are often not cancerous (benign).

Last reviewed: 
10 Aug 2020
Next review due: 
10 Aug 2023
Coronavirus and cancer

We know it’s a worrying time for people with cancer, we have information to help.

Read our information about coronavirus and cancer