Onc Review Flashcards
What is Grade 4 of tumor?
completely undifferentiated cells on pathology
What are common sanctuary sites? Why?
CSF and scrotum
they have special barriers that medications cannot reach as easily
Does grading and TNS predict prognosis?
yes
What type of therapy do you give for lymphoma?
give systemic therapy first
What are some key features of clonal proliferation?
one mutation (or two hits in TSG) leads to entire colony of tumor cells
What is SEER?
NIH cancer statistics
What is USPSTF?
provides screening recommendations
Which clinical trial phase is a RTC?
phase III
What is a difference between phase I and phase II of clinical trials?
phase I assesses toxicity and pharmacokinetics
phase II assesses treatment efficacy and optimal dosing
What is grouping for cancer?
grouping is how surgeons talk about the extent of resection
What are the 3 groups for grouping?
R0 = negative margins
R1 = microscopic disease
R2 = gross disease
What is local control?
treatment of cancer we can measure
neoadjuvant therapy
What is systemic control?
treatment of cancer we cannot measure
adjuvant therapy
What is neoadjuvant / adjuvant therapy from a timeline perspective?
neoadjuvant is everything that happens before local control
adjuvant is everything that happens after local control
What are the 3 volumes that are used in radiation oncology?
- GTV: gross tumor volume = clinically detectable disease
- CTV: clinical target volume = GTV + microscopic extension of tumor
- PTV: planning target volume = GTV + CTV + margin thought to account for uncertainty in treatment
When you radiate a larger area, what do you have to do?
lower the dose
What are common second malignancy sites after radiation?
thyroid, bone, breast, skin and brain
What does a margin refer to?
healthy tissue that is removed from around the tumor
What are possible margins? (3)
Negative = no cancer cells touching margin
Positive = cancer cells touching margin
Close = cancer cells close to margin but not touching
How does chemotherapy work in general?
induces apoptosis
Does chemotherapy use the immune system?
No
What are 3 common systems to chemo in general?
hair loss
nausea
marrow suppression
What is the MOA of TKIs? (2 types)
1) Specific to a mutated oncogene within the tumor
2) Block VEG-F stimulated tyrosine kinase activity
What is the ending of TKIs?
all end in -nib