AP BIOLOGY

Detailed explanation-1: -(TOO-mer) An abnormal mass of tissue that forms when cells grow and divide more than they should or do not die when they should. Tumors may be benign (not cancer) or malignant (cancer). Benign tumors may grow large but do not spread into, or invade, nearby tissues or other parts of the body.

Detailed explanation-2: -A tumor is any abnormal mass of tissue or swelling. Like a cyst, a tumor can form in any part of the body. A tumor can be benign or cancerous (malignant).

Detailed explanation-3: -A neoplasm is an abnormal growth of cells, also known as a tumor. Neoplastic diseases are conditions that cause tumor growth. Growth can be either benign (noncancerous) or malignant (cancerous). Benign tumors usually grow slowly and can’t spread to other tissues.

Detailed explanation-4: -In medicine, an abnormal lesion or growth in or on the body may be benign (not cancer), precancerous or premalignant (likely to become cancer), or malignant (cancer). Also called atypical.

Detailed explanation-5: -Tumor. A mass formed when normal cells begin to change and grow uncontrollably. A tumor can be benign (noncancerous) or malignant (cancerous, meaning it can spread to other parts of the body). Also called a nodule or mass.