PNET, or Primitive Neuroectodermal Tumor, is a type of cancer that primarily affects children and young adults. It originates from primitive nerve cells and can occur in various parts of the body, including the brain, spinal cord, and soft tissues. PNETs are classified as small round blue cell tumors and are known for their aggressive nature. Treatment for PNET typically involves a combination of surgery, chemotherapy, and radiation therapy. The specific approach depends on the tumor's location, size, and whether it has spread. Early diagnosis and intervention are crucial for improving outcomes in affected individuals.