Oncology Flashcards
What are the hallmark signs of cancer cells?
Variable shaped nuclei and small cytoplasmic volume
How do cancer cells proliferate?
In an autonomous manner free of any regulation
What type of cell: Replicate in strictly regulated way to replace cells that die to allow normal growth
Normal Cells
T/F: Majority of tumor growth occurs before it’s clinically detectable.
True
What type of growth do cancer cells follow?
Gompertzian Growth
Cancer is often an interplay of what 2 factors?
Environmental and Genetic
A cell can initiate a tumor only when it contains what?
2 mutant alleles
What’s the two-hit theory called for cancer?
Knudson Hypothesis
Smoking leads to what type of cancer?
Lung, bladder, esophageal, H+N
Alcohol leads to what type of cancer?
Liver, esophageal, H+N
Asbestos/Silica leads to what type of cancer?
Lungs
What are the 3 inherited genetic factors?
- Down syndrome
- BRCA 1 + 2
- Familial Adenomatosis Polyposis (FAP)
What are the 2 acquired genetic factors?
- Philadelphia chromosome
2. Radiation
The Down Syndrome genetic factor causes what type of cancer?
Acute Leukemia
The BRCA 1 + 2 inherited gene causes what type of cancer?
Breast and Ovarian
The FAP (familial adenomatosis polyposis) gene causes what type of cancer?
Colon
The philadelphia chromosome causes what type of cancer?
Chronic myeloid leukemia (CML)
Radiation causes what type of cancer?
Thyroid
What’s the #1 cancer for women?
Breast
What’s the #1 cancer for men?
Prostate
What’s the #2 cancer for men and women? This cancer is also the #1 cause of mortality in men and women
Lung
Carcinomas arise from what type of cell?
Epithelial cells
Sarcomas arise from cells that make up what?
Bone or connective tissue
Leukemia/Lymphomas arise from cells located where?
bone marrow/immune system
What are the local effects of cancer?
- Lump (not painful/hard/immobile)
- Pain
- Bleeding
- Pressure on nerves/vessels
What are the “B-cell symptoms” that are general systemic effects not due to metastasis?
- Weight loss
- Malaise
- Night sweats
- Fevers
What’s the basic concept of cancer screening?
Find cancer very early before it becomes symptomatic
What cancers are commonly screened for?
- Cervical
- Breast
- Colon
- Lung
What does the TNM staging system stand for?
- Tumor (locally invasive?)
- Nodes: Any?
- Metastasis (yes/no)
Define chemotherapy
Drugs that interfere with cell division (healthy and cancerous)
What are the long term effects of chemotherapy?
- Infertility
- Lung disease
- Heart disease
Define radiation theraphy
Produces highly reactive radicals, damages nuclear DNA, cancer cells can’t reproduce