General aspects of neoplasia Flashcards
What is neoplasia?
The disease process that results from neoplasms. ( benign or malignant
What is oncology?
study of tumors
What is cancer?
The disease produced by malignant neoplasms.
What is a tumor?
Literally means any mass or swelling. At present this is mostly used to mean malignant or benign neoplastic growths. In the old ( clinical ) definition, an abscess or a hematoma, or a non-neoplastic growth are also referred to as tumors.
What are the general types of Neoplasms?
benign
malignant
What are benign neoplasms?
Morphologically relatively “innocent” and localized lesions
What are malignant neoplasms?
Invasive and destructive
lesions
Capable of distant spread (metastasis)
Capable of causing death
What are the two basic components of tumors benign or malignant?
paranchyma
Supportive stroma
What is paranchhyma?
the proliferating neoplastic cells
What is a supportive stroma?
connective tissue and blood vessels
What are the different types of supportive stroma?
demoplasia
scirrhous
What is a demoplasia?
abundant collagenous stroma
What is a Scirrhous?
dense, fibrous stroma; stony hard
What are the origins of parachymal cells?
epithelial
mesenchymal
How are neoplasms named
prefix
suffix