WorksheetsPatho- Exam 5: Cancer Basics
Total questions: 36
Worksheet time: 20mins
A tumor is said to be ________ when its microscopic and gross characteristics are considered to be relatively innocent, implying that it will remain localized and is amendable to local surgical removal. (Encapsulated, well circumscribed, no invasion, cell proliferation is low)
benign
malignant
________, as applied to a neoplasm, implies that the lesion can invade and destroy adjacent structures and spread to distant sites (metastasize) to cause death. (invasion, rapid growth, loss of capsule, ability of spread [metastasis], anaplasia)
Benign
Malignant
Most epithelial carcinomas spread through _________.
lymphatics
blood (hematogenous)
Most sarcomas (arising in the bones, connective tissue such as fat and muscle) spread through ___________.
lymphatics
blood (hematogenous)
Directly damage DNA, leading to mutations and eventually cancer
chemical carcinogens
radiation carcinogenesis
viral and bacterial oncogenesis
causes chromosome breakage, chromosome rearrangements, and, less frequently, point mutations, any of which may affect cancer genes and thereby drive carcinogenesis
chemical carcinogens
radiation carcinogenesis
viral and bacterial oncogenesis
HPV (cervical cancer), EBV (Burkett's lymphoma), HCB (hepatocellular carcinoma), H. Pylori (MALT lymphoma)
chemical carcinogens
radiation carcinogenesis
viral and bacterial oncogenesis
Tumor markers are produced by malignant tumors exclusively.
true
false
Where can tumor markers be found?
present in or on the tumor cells
blood, urine, CSF
in the art supply section
What do tumor markers include?
hormones
genes
enzymes
antigens
antibodies
What do hypercalcemia, Cushing syndrome, and nonbacterial thrombotic endocarditis are all indications of what condition?
paraneoplastic syndrome
lung cancer
prostate cancer
breast cancer
What can tumor markers be used for?
screening individuals at high risk for cancer
diagnosis
following the clinical course of a tumor
__________ of tumors is determined by cytologic appearance and is based on the idea that behavior and differentiation are related, with poorly differentiated tumors having more aggressive behavior.
Grading
Staging
___________ (extent of tumor), determined by surgical exploration or imaging, is based on size, local and regional lymph node spread, and distant metastases.
Grading
Staging
_________ is of greater clinical value than ________.
Grading, staging
Staging, grading
Choose the major forms of neoplasia associated with the following clinical syndrome: Cushing syndrome
small cell carcinoma of lung
pancreatic carcinoma
neural tumors
intracranial neoplasm
squamous cell carcinoma of lung
Choose the major forms of neoplasia associated with the following clinical syndrome: syndrome of inappropriate anti-diuretic hormone secretion
small cell carcinoma of lung
intracranial neoplasms
squamous cell carcinoma of lung
breast carcinoma
renal carcinoma
Choose the major forms of neoplasia associated with the following clinical syndrome: hypercalcemia
squamous cell carcinoma of lung
breast carcinoma
renal carcinoma
adult T cell leukemia/lymphoma
fibrosarcoma
Choose the major forms of neoplasia associated with the following clinical syndrome: hypoglycemia
fibrosarcoma
other mesenchymal sarcomas
ovarian carcinoma
small cell carcinoma of lung
pancreatic carcinoma
What is the causal Mechanism(s)/Agent(s) of the following clinical syndrome: Cushing syndrome
ACTH or ACTH-like substance
Anti-diuretic hormone or atrial natriuretic hormones
Parathyroid hormone-related protein, TGF-α
Insulin or insulin-like substance
What is the causal Mechanism(s)/Agent(s) of the following clinical syndrome: syndrome of inappropriate anti-diuretic hormone secretion
ACTH or ACTH-like substance
Anti-diuretic hormone or atrial natriuretic hormones
Parathyroid hormone-related protein, TGF-α
Insulin or insulin-like substance
What is the causal Mechanism(s)/Agent(s) of the following clinical syndrome: hypercalcemia
ACTH or ACTH-like substance
anti-diuretic hormone or atrial natriuretic hormones
Parathyroid hormone-related protein, TGF-α
Insulin or insulin-like substance
What is the causal Mechanism(s)/Agent(s) of the following clinical syndrome: hypoglycemia
ACTH or ACTH-like substance
Anti-diuretic hormone or atrial natriuretic hormones
Parathyroid hormone-related protein, TGF-α
Insulin or insulin-like substance
in laboratory setting, normal cells stop growth when they reach the edge of culture dish; cancer cells will continue to grow and pile on top of one another
lack contact inhibition
anchorage independent
immortal
differentiation
normal cells will not grow unless they are attached to a surface; cancer cells will grow when suspended in soft agar
lack contact inhibition
anchorage independent
immortal
differentiation
normal cells will divide 10-50 times in a lab; cancer cells will divide indefinitely
lack contact inhibition
anchorage independent
immortal
differentiation
cancer cells show defects; anaplasia (reversion to a less mature form); may be pleomorphic (variable size and shape)
lack contact inhibition
anchorage independent
immortal
differentiation
Cancer cells perform glycolysis with and without oxygen
true
false
When the cancer cells perform glycolysis without regard to presence of oxygen, is this a dysfunction?
yes
no- genetic mutations promote this shift, allow for more efficient use of lactate and metabolites for production of cellular binding blocks for rapid growth
Define oncogenes
genes that induce a transformed phenotype when expressed in cells by promoting increased cell growth
mutated or over expressed versions of normal cellular genes
Define proto-oncogenes
genes that induce a transformed phenotype when expressed in cells by promoting increased cell growth
mutated or over expressed versions of normal cellular genes
Genes that normally prevent uncontrolled growth and, when mutated or lose from a cell, allow the transformed phenotype to develop. Transformation generally only occurs when both alleles of these cells are damaged.
tumor suppressor genes
oncogenes
proto-oncogenes
There are two types of tumor suppressor genes. Which one acts as important brakes on cellular proliferation?
guardian
governors
There are two types of tumor suppressor genes. Which one is responsible for sensing genomic damage?
governors
guardians
Genes that regulate __________ primarily act by enhancing cell survival, rather than stimulating proliferation per se.
apoptosis
tumor growth
Genes of this class that protect against apoptosis are often ___________ in cancer cells, whereas those that promote apoptosis tend to be _________ or functionally inactivated by mutations.
over expressed, under expressed
under expressed, over expressed
