Tumors of Epithelial Tissue

Epithelial tissue tumors

1. Tumors of Epithelial Tissue

2. Classification Stratified squamous epithelium Transitional epithelium Columnar glandular epithelium Benign Malignant

3. Benign Tumor Papenoma Adenoma Polyp

4. Adenoma Locations Mucosa (stomach, small intestine and bowel ) Glands (endocrine and exocrine) Ducts Renal (small, asymptomatic)

5. Adenoma M orphological variants of adenomas: A cinous (alveolar) T ubular C ystadenomas (appendix) V illiferous adenoma Fibroadenoma ( b reast adenoma)

6. Polyp A mass that projects above a mucosal surface, as in the gut, to form a macroscopically visible structure Glandular cuboidal or columnar epithelium

7. Types Aural (outside ear canal) Nasal (chronic sinus infections , allergies,  asthma) Colon Cervical (grows on the part of the uterus that connects to the  vagina) Uterine

8. Papilloma Transitional, squamous skin, larynx, urinary bladder, kidney, esophagus etc grows exophytically (outwardly projecting )

9. Oral cavity papilloma

10. Malignant epithelial neoplasm Squamous Cell Carcinoma Adenocarcinoma Medular carcinoma Small cell carcinoma Large cell carcinoma Carcinoma in situ Mucinous Solidus Scirros

11. Carcinoma in situ a group of abnormal cells Examples: cervical, ducts in breast, prostate, Bowen’s disease, bronchiolalevolar

12. Mesenchymal neoplasia abnormal cellular growth in bone, connective tissue, or the lymph and circulatory systems. benign or malignant

13. CONNECTIVE TISSUE NEOPLASMS Smooth muscle: Leiomyosarcoma Bone: Osteosarcoma Fibrous tissue: Fibrosarcoma Cartilage: Chondrosarcoma Fat: Liposarcoma Nerve: Neurofibrosarcoma Nerve sheath: Neurilemmosarcoma Glial cells: Malignant glioma

14. Fibroma B enign   tumors  that are composed of fibrous Types: hard, soft They usually emerge in the cheeks, tongue, palate and gums. Fibroids usually grow very slowly

15. Lipoma B enign neoplasm composed of fat Types: yellow fat, brown fat Soft to the touch, usually movable, and are generally painless. S mall (<1 cm) but can enlarge (6cm<)