Neuroblastoma | |
---|---|
Microscopic view of a typical neuroblastoma with rosette formation | |
Specialty | Neuro-oncology |
Symptoms | Bone pain, lumps[1] |
Usual onset | Under 5 years old[1] |
Causes | Genetic mutation[1] |
Diagnostic method | Tissue biopsy[1] |
Treatment | Observation, surgery, radiation, chemotherapy, stem cell transplantation[1] |
Prognosis | US five-year survival ~95% (< 1 year old), 68% (1–14 years old)[2] |
Frequency | 1 in 7,000 children[2] |
Deaths | 15% of deaths due to cancer in children[3] |
Neuroblastoma (NB) is a type of cancer that forms in certain types of nerve tissue.[1] It most frequently starts from one of the adrenal glands but can also develop in the head, neck, chest, abdomen, or spine.[1] Symptoms may include bone pain, a lump in the abdomen, neck, or chest, or a painless bluish lump under the skin.[1]
Typically, neuroblastoma occurs due to a genetic mutation occurring in the first trimester of pregnancy.[4][5] Rarely, it may be due to a mutation inherited.[1] Environmental factors have not been found to be involved.[2] Diagnosis is based on a tissue biopsy.[1] Occasionally, it may be found in a baby by ultrasound during pregnancy.[1] At diagnosis, the cancer has usually already spread.[1] The cancer is divided into low-, intermediate-, and high-risk groups based on a child's age, cancer stage, and what the cancer looks like.[1]
Treatment and outcomes depends on the risk group a person is in.[1][5] Treatments may include observation, surgery, radiation, chemotherapy, or stem cell transplantation.[1] Low-risk disease in babies typically has a good outcome with surgery or simply observation.[5] In high-risk disease, chances of long-term survival, however, are less than 40%, despite aggressive treatment.[5]
Neuroblastoma is the most common cancer in babies and the third-most common cancer in children after leukemia and brain cancer.[5] About one in every 7,000 children is affected at some time.[2] About 90% of cases occur in children less than 5 years old, and it is rare in adults.[2][3] Of cancer deaths in children, about 15% are due to neuroblastoma.[3] The disease was first described in the 1800s.[6]