Chapter 5 - Oncology and Diagnostic, Surgical, and Therapeutic Procedures Flashcards
abnormal growths of new tissue that are classified as benign or malignant
neoplasms
noncancerous growths are composed of the same type of cells as the tissue in which they are growing
benign neoplasms
cancerous growths that are composed of cells that tend to become invasive and spread to remote regions of the body (metastasis)
malignant neoplasms
newer treatment that stimulates the body’s own immune defenses to fight tumor cells, also called biotherapy
immunotherapy
people who grade and stage tumors to help in diagnosis and treatment planning, provide a possible prognosis, and aid comparison of treatment results when different treatment methods are used
pathologists
tumor grade I (tumor cells well differentiated)
close resemblance to tissue of origin and, thus, retaining some specialized functions
tumor grade II (tumor cells moderately or poorly differentiated)
less resemblance to tissue of origin, more variation in size and shape of tumor cells, increased misoses
tumor grade III (tumor cells poorly differentiated)
increased abnormality in appearance, with only remote resemblance to the tissue of origin, marked variation in shape and size of tumor cells, greatly increased mitoses
tumor grade IV (tumor cells very poorly differentiated)
abnormal appearance to the extent that recognition of the tumor’s tissue origin is difficult, extreme variation in size and shape of tumor cells
tumor, node, metastasis system
most common system used for staging tumors
size and invasiveness of the primary tumor
T
are lymph nodes involved
N
invasiveness (metastasis) of the primary tumor
M
the most common type of skin cancer is a malignancy of the basal layer of the epidermis or hair follicles
basal cell carcinoma
(tumor) primary tumor that cannot be evaluated
TX
(tumor) no evidence of tumor
T0
(tumor) stage I, carcinoma in situ which indicated that the tumor is in a defined location and shows no indication of surrounding tissues
Tis
(tumor) stage II, primary tumor size and extent of local invasion
T1, T2, T3, T4
(node) regional lymph nodes that cannot be evaluated
NX
(node) regional lymph nodes that show no abnormalities
N0