oral quiz neoplasia

• Tumors are composed of

  • neoplastic cells that constitute the tumor.
  • stroma made up of connective tissue, blood vessels, and cells of the immune system.
• Benign tumors


  tumors that stays in one place and can usually be removed with surgery.

  if the tumor is in a delicate place like the brain, it can still cause serious problems
• Benign Tumors

  fibroma: fibroblast tumors

  chondroma: cartilaginous tumor

  adenoma: epithelial tumors that come from glandular tissues

  papilloma: benign tumors that produce fingerlike projections

  polyp: tumors that produce a visible projection above a mucosal surface
• Malignant tumors


  tumors that can invade and destroy nearby structures and spread to other parts of the body

  Some are found early enough to be removed with surgery, and others can be cured with drugs or antibodies.
• Malignant Tumors

  sarcomas: tumors in solid tissues like muscles

  leukemias: white blood cells tumors

  lymphoma: cancer of lymphoctyes

  carcinoma: epithelial cell origin
• Mixed Tumors


  distinct subpopulations of cells within the tumor
• teratoma (choristoma)

  • mature or immature cells or tissues belonging to more than one germ cell layer, ex; hair, teeth, and bone in a tumor
  • normally present in the ovary and testis