Surgical Oncology Flashcards
(32 cards)
what are the roles of surgery for cancer management?
diagnosis
cure
metastatectomy
palliation
what are the positives of cytology?
low cost
low morbidity
comparatively fast results
good for tumors that exfoliate well
what is a negative of cytology?
low diagnostic accuracy
what are the indications for surgical biopsy?
when cytology is nondiagnostic
when tumor type/grade may change
what are the negatives of surgical biopsy?
adds cost
adds morbidity
adds time
curative intent surgery must include biopsy tract
what is a positive of needle core biopsy compared to other biopsy types?
can access deeper lesions
what are the negatives of needle core biopsy?
need ultrasound guidance
+/- general anesthesia
training/familiarity needed
what are the positives of punch biopsy?
best suited for superficial lesions
easy to perform
what are punch biopsies not suited for?
deeper lesions
what are the positives of incisional biopsy?
easy to perform
can include normal tissue
what is a con of incisional biopsy?
biopsy tract needs to be resected
what is cancer staging?
process of determining the extent of the disease
what is a positive of excisional biopsy?
may be curative
what is a negative of excisional biopsy?
may complicate curative intent surgery
when performing cancer staging, how do you evaluate local disease?
tumor size
mobility or fixation of tumor to adjacent tissues
what diagnostics are useful for cancer staging?
radiographs: region of interest
ultrasound
computed tomography
MRI
what is a sentinel lymph node?
the first lymph node to receive drainage from a tumor
how can you identify the sentinel lymph node to a tumor?
lymphoscintigraphy
indirect lymphography
how can you screen for distant metastasis?
3 view thoracic radiographs
abdominal ultrasound
nuclear scintigraphy
CT/PET-CT
MRI
what are the three options for surgical dose?
marginal
wide
radical
what is the common result of marginal surgical dose?
usually leaves microscopic disease
what determines the guidelines for surgical margins?
tumor type
what are deep/barrier margins?
muscle layers/fascial layers
why is revision surgery challenging?
entire previous scar must be resected
scar tissue complicates dissection
additional cost