3.1 neoplasms Flashcards
(35 cards)
New growth
Neoplasm
Swelling or distention
Tumor
Disorder of cell growth triggered by mutations affecting a single cell and it’s clonal progeny
Neoplasm
2 basic components of tumors
Clonality (entire population arises from one cell)
Supporting stroma
Leiomyoma
Benign, from smooth muscle
Normal tissue in an abnormal location
Choristoma
Mass of disorganized but mature specialized cells (is normal tissue in it’s normal location, but just overgrown and disorganized)
Hamartoma
Abundant collagenous stroma in response to tumor growth and invasion
Desmoplasia
A macroscopically visible projection above a mucosal surface
Polyp
The extent to which neoplastic cells resemble comparable normal cells
Differentiation
Lack of differentiation
Anaplasia
Variation in cell size and shape
Pleomorphism (a feature of malignant neoplasms)
Darker cells
Hyperchromasia (a feature of malignant neoplasms)
Increased nucleus to cytoplasm ratio is a feature of
Malignant neoplasia
Barrett esophagus example of
Esophageal metaplasia
Disordered growth
Not malignant
May progress to cancer
Dysplasia
Rate of tumor growth dependent on
Doubling time of tumor cells
Fraction of cells in replicative pool
Rate at which cells shed or die
Growth fraction
Proportion of cells in a tumor population that are in the proliferation pool (20% or less in most tumors)
What factor has an effect on susceptibility to cancer chemo
Growth fraction
Tumor implant that is discontinuous with the primary tumor
Metastasis
Penetration of tumor into a natural open space
Direct seeding
Epithelial malignancies spread via
Lymphatics (lymphatic spread)
Mesenchymal malignancies spread via
Blood (hematogenous spread)
Treatment of what cancers is highly dependent on how it’s classified
Leukemia
Lymphoma