what is GBM cancer
Glioblastoma Multiforme (GBM) is a fast-growing type of malignant brain tumor that is the most common brain tumor in adults.In 2010, more than 22,000 Americans were estimated to have been diagnosed and 13,140 were estimated to have died from brain and other nervous system cancers.hat is glioblastoma multiforme? Glioblastoma Multiforme (GBM) is a fast-growing type of malignant brain tumor that is the most common brain tumor in adults. In 2010, more than 22,000 Americans were estimated to have been diagnosed and 13,140 were estimated to have died from brain and other nervous system cancers.