Definition of blastoma

A cancerous tumor that arises from the immature cells that form the basis for an organ’s structure. The cells are undifferentiated, which means they have not yet developed a specific role within the body. Researchers believe these are embryonic cells. Blastomas grow as the type of tissue where the embryonic cells remain after organ development. Blastomas nearly always occur in childhood, though occasionally may occur in early adulthood. Most blastomas are malignant (cancerous), though osteoblastoma (blastoma of the bone) is a benign (noncancerous) tumor.

Treatment for blastoma typically combines surgery to remove the tumor with CHEMOTHERAPYRADIATION THERAPY, or both to shrink the tumor before surgery and destroy any lingering cancer cells after surgery. The precise combination depends on the tumor’s location and size at the time of diagnosis.

Types of blastoma

TYPES OF BLASTOMA
TumorLocation
medulloblastomaBRAIN
nephroblastomakidney
RETINOBLASTOMARETINA of the EYE
osteoblastomaBONE
neuroblastomaNERVOUS SYSTEM tissue
glioblastoma multiforme (GBM)brain

See also ADENOCARCINOMA; CARCINOMALEUKEMIA; SARCOMASURGERY FOR CANCERSURGERY BENEFIT AND RISK ASSESSMENT; WILMS’S TUMOR.

Blastoma (tumor/cancer) and types of blastoma
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