Chapter 7 Part 1 Flashcards
Cancer
generic term for all malignant neoplasms
Neoplasia
new growth resulting from genetic alterations passed down to progeny of tumor cells
Growth pattern of neoplasm
excessive, unregulated proliferation that becomes autonomous
Tumor
initially used to describe inflammation, often used as a synonym for neoplasia
Oncology
study of tumors
Clonal
entire population of neoplasm arises from single cell that has incurred genetic change
Benign
tumors considered to be grossly and microscopically innocent; localized, amenable to local surgical removal
Malignant
invade and destroy adjacent structures and spread to distant sites to cause death
-oma tissue derivation
benign tumor arising from specific tissue (indicated by first portion of the word)
carcinoma tissue derivation
epithelial origin from any 3 germ layers
sarcoma tissue derivation
mesenchymal derivation
tumor characteristics of benign neoplasms
well differentiated, usually progressive and slowly growing, well-demarcated mass, non-metastatic
tumor characteristics of malignant neoplasms
lack of differentiation, atypical structure, erratic and varied growth, locally invasive, infiltrating surrounding tissue, frequently metastasizes
Polyp
macroscopically visible projection into a lumen
adenoma
benign epithelial neoplasm derived from glandular tissue