Oncology Flashcards
Which gene mutations are commonly seen in breast and ovarian cancer?
BRCA1 (chr 17) - breast 80%, ovarian 40%, colorectal
BRCA2 (chr 13) - breast 80%, prostate
Which 4(/5) cancers have the commonest incidence?
Skin
Breast / prostate
Lung
Colorectal
Which 3(/4) cancers have the commonest mortality?
Lung
Breast/prostate
Colorectal
What is familial adenomatous polyposis?
An AD condition in which numerous adenomatous polyps form in the epithelium of the large intestine. They may malignantly transform into colon cancer if left untreated.
What is an adenoma?
A benign tumour of glandular tissue
What genetic mutation occurs in familial adenomatous polyposis?
APC gene on chr 5
+ p53 or kRAS
Which genes are associated with hereditary nonpolyposis colorectal cancer (HNPCC)
Lynch 1 and Lynch 2
Which cancers are associated with lynch 2?
Colorectal cancer + 1 of:
- ovarian
- endometrial
- pancreas
- small bowel
- renal pelvis
What is Peutz-Jeghers syndrome?
AD genetic disorder characterised by the development of benign hamartomatous polyps in the GI tract + hyperpigmented macules on the lips and oral mucosa
What is a koilocyte?
A squamous epithelial cell that has undergone structural changes due to infection by human papillomavirus (HPV)
What is CA 125 a tumour marker for?
Ovarian cancer
What is CA 19-9 a tumour marker for?
Pancreatic cancer
What is CA 15-3 a tumour marker for?
Breast cancer
CA 125, CA 19-9 and CA 15-3 are all what type of antibody?
Monoclonal antibodies
What is alpha-feto protein a tumour marker (antigen) for ?
Hepatocellular carcinoma, teratoma