1. Abnormal Cell Division

2. Neoplasia Inappropriate cell mitosis “Neo” - new “plasia” - growth
Completely abnormal → not part of the body plan
“Neo” - new “plasia” - growth

3. Benign
“Innocent”
Not usually dangerous to health
Not progressive

4. Can be problematic because in many areas of the body, there is no where for mass to grow
Example: spinal column, brain

5. Tumor
Solid mass of cells (may be benign or malignant)

6. Characteristics of Benign Tumors
Tumor does not spread
Usually encapsulated
Tumor appears neat and organized (cancer appears abnormal)
Cells look normal
Does not usually become cancerous

8. Benign Tumors
Can be problematic if they put pressure on organs or vessels
Treatment: surgery
Do not usually grow back

9. Benign Salivary Gland Tumor ©http://www. arquivosdeorl. org

10. Cyst Fluid-filled mass surrounded by a fibrous capsule
All cysts are benign
Very common, found all over
Some may grow to unusual sizes if not removed

11. Large Ovarian Cyst ©http://bms. brown

12. Ganglion Cyst on the Wrist ©http://thefuntimesguide

13. Polyp Abnormal growth of tissues projecting from a mucous membrane
Made of epithelial cells
All are mushroom shaped
Can become cancerous if it is in an area that irritates the tissue

14. Polyp in the Colon

15. Polyp
Most often found in the colon, stomach, nose, sinuses, bladder, uterus
Scope often finds the polyp and it can be removed by a physician

16. Biopsy: Sample is taken and determined if the tissue is cancerous

17. Malignant
Cancer “CA”

18. Malignant Tumor Do grow aggressively
Do invade the cells found in surrounding tissue
Do metastasize (spread to different areas)

20. Carcinoma Any malignant tumor that comes from epithelial cells
Originate in the lining or covering any organ
Over 90% of malignant tumors are carcinomas

21. Sarcoma
Malignant tumor originates in muscle, nerve, or connective tissue
10% of malignant tumors

22. ©

23. Diffuse Found all over the body Inoperable
Use of chemotherapy is the most effective treatment for leukemia and lymphoma

24. Leukemia: cancer of the blood or bone marrow
Usually an overproduction of wbc
Lymphoma: type of cancer that originates in the lymphocytes