Lecture 14 3/8/24 Flashcards
What are the characteristics of neoplasia?
-new growth
-DNA mutations allow for uncontrolled proliferation and tumor formation
-formerly normal cells undergo irreversible genetic changes
-cells become unresponsive to normal growth controls
What are the characteristics of benign neoplasms?
-“easily” cured
-do not invade surrounding tissues
-do not spread to new anatomic locations
What is the term for benign neoplasms of tissue that is ectodermal or endodermal in origin?
adenoma
What is the term for benign neoplasms of tissue that is mesodermal in origin?
fibroma or lipoma
What are the characteristics of malignant neoplasms?
-not “easily” cured
-potential to spread/metastasize
Where can metastasis occur?
-within the same tissue
-lymph nodes
-distant sites
What is the term for malignant neoplasms of tissue that is ectodermal or endodermal in origin?
carcinoma
What is the term for malignant neoplasms of tissue that is mesodermal in origin?
sarcoma
What is lymphoma?
malignant neoplasm of lymphocytes with no benign counterpart
What is melanoma?
malignant neoplasm of melanocytes
What is the benign counterpart to melanoma?
melanocytoma
What is mesothelioma?
malignant neoplasm of mesothelial cells with no benign counterpart
How is metastasis named?
keeps the name of the original tumor, but with an identifier for the tissue it is now in
Which tumor is typically the primary tumor?
the largest tumor
How can a tumor potentially be identified grossly?
-location
-shape
-production of bone/cartilage
-color
-consistency