Basics of Neoplasia Flashcards
Which species can get cancer?
Any multicellular species
ie. plants, sharks, etc
What is neoplasia?
New growth
What is neoplasm?
Solid new growth
What is a tumor?
Any nonspecific mass
What is oncology?
Study of tumors/masses
What is a benign neoplasm?
Not cancer; cannot invade
What is a malignant neoplasm?
Always cancer; can invade
What is differentiation?
Degree of resemblance of a tissue to the tissue of origin
Describe well-differentiated neoplasm
Kind of looks normal and tends to be benign
Describe poorly-differentiated neoplasm
Doesn’t look normal
Describe undifferentiated/anaplastic neoplasm
Looks totally different, acts different, tends to be malignant
Pathologists employ the concept of differentiation to…
develop a prognosis once a tentative diagnosis of neoplastic disease has been made
Patients with a well-differentiated neoplasm are more likely to…
survive for a longer period of time or may be completely cured with treatment
Patients with an anaplastic neoplasm are more likely to…
experience a lower survival rate and/or increased risk of mortality
What are the features of anaplasia?
- Cellular pleomorphism and/or tumor giant cells
- Hyperchromatism of nuclei
- Prominent nucleolus
- Frequency of mitoses
- Disorientation of cells/loss of architecture
- Metastasis