Exam Flashcards
Oncology
Branch of medicine that studies tumors
Hematology
Branch of medicine that studies blood
Cancer
Disease in which abnormal cells divide without control and are able to invade other tissues - these cancer cells can spread to other parts of the body through the blood and lymph
Carcinoma
Cancer that begins in the skin or in the tissues that line or cover internal organs
Sarcoma
Cancer that begins in the bone, cartilage, fat, muscle, blood vessels, or other connective or supportive tissue
Leukemia
Cancer that starts in the blood-forming tissue such as the bone marrow
Lymphoma and Myeloma
Cancers that begin in the cells of the immune system
Central Nervous System Cancers
Cancers that begin in the tissues of the brain or spinal cord
Neoplasm
New growth - abnormal mass of cells that grows more or less progressively at the expense of the host (may be benign or malignant)
Etiology of Neoplastic Cells
Altered nuclear and cellular structure Chromosomal Abnormalities Genetic Mutations Biochemical Abnormalities Inappropriate Cell Products
Malignant Neoplasms
Differentiation Anaplasia (often) Unencapsulated Unrestrained Growth Invasion of Adjacent Tissues Failure of Programmed Cell Death Metastasis to distant sites possible
How do Metastasis Happen?
Lymphatic Invasion
Blood-Born Transport
Seeding of Body Cavities, Organs, and Skeleton
Angiogenesis
Cancer is the _______ leading cause of death in the United States
Second
Cancer accounts for nearly 1 out of every ____ deaths
4
There are _________ deaths from cancer per day
1600
Over ______ newly diagnosed cancers predicted in 2013
1.6 million
What is the most important risk factor for Cancer?
Tobacco
About 30% of Cancer Deaths are due to these five behavioral and dietary risks:
High BMI Low Fruit and Veggies Lack of Physical Activity Tobacco Use Alcohol Use
3 most common Cancers in Men
1, Prostate
- Lung
- Colorectal
3 highest mortality Cancers in Men
- Lung
- Prostate
- Colorectal
3 most common cancers in Women
- Breast
- Lung
- Colorectal
3 highest mortality Cancers in Women
- Lung
- Breast
- Colorectal
What is the 5-year survival rate for Glioblastoma?
4%
What is the 5-year survival rate for Breast Cancer?
98.6%
National Cancer Act of 1971
Nixon - $$ to enlarge NIH and NCI “to advance the national effort against cancer”
Cancer death rate has decreased by only ____ since 1950
5%
Incidence Rate of Cancer in Oregon is ______ per 100,000
434
Mortality Rate from Cancer in Oregon is _______ per 100,000
175
Cancer is the Leading Cause of Death in Oregon (T/F)
TRUE
Tumor-node-metastatis (TNM) method of staging uses ____ measurements
3
T Score
Size and extent of invasion of primary TUMOR
N Score
Number and location of histologically involved lymph NODES
M Score
Presence or absence of distant METASTASES
Tis =
in situ tumor
T1-T4 =
usually based on size, invasion of adjacent structures
Tx =
primary tumor cannot be assessed
Nx =
lymph nodes cannot be assessed
N1-3 =
based on levels of lymph nodes
Mx =
presence of mets cannot be assessed
M0 =
no metastases
M1 =
presence of metastases
Stage I =
T1-T2 N1 or T3 N0
Stage II =
T1-T2 N1 or T3 N0
Stage III =
T1-3 with N1-3
Stage IV =
M1
70 on the Karnofsky Performance Status
Cares for self, unable to carry on normal activity or to do active work - usually the cut-off for whether a person can handle chemotherapy or being entered into a clinical trial
Exploding cells release __________
biliruben
MCV
How big is it?
MCH and MCHC
How dark is it?
RDW
What is the distribution/spread of the size of RBC
Normal RDW
most of the cells are the same
Wide RDW
Varying sized cells are present - this may be a mixed anemia or thalassemia
Microcytic =
Small (<80)
Macrocytic =
Big (>100)
Normocytic =
Normal (80-99)
Anisocytosis =
Mixed large cells and small cells
MCV Values are higher in newborns or adults?
Newborns and Infants
Mean Corpuscular Hemoglobin Concentration (MCHC)
Proportion of each cell taken up by hemoglobin
Mean Corpuscular Hemoglobin (MCH)
Measures the amount of hemoglobin present in one RBC
Hypochromic
Low MCH/MCHC = iron deficiency
Normochromic
normal MCH/MCHC
Microcytic Anemia
Low MCV
Microcytic Anemia causes
Iron Deficiency
Chronic Disease
Lead Poisoning
Less Common: Thalassemia, Sideroblastic, Hemoglobinopathies
Macrocytic Anemia
High MCV
Causes of Macrocytic Anemia
Folic Acid Deficiency, Vitamin B12 Anemia
Metabolic Intermediaries for Folate
Homocysteine (HC)
Metabolic Intermediaries for Vit B12
Methylmalonic Acid (MMA)
Normocytic Anemia
Normal MCV
Causes of Normocytic Anemia
Bleeding
Chronic Disease
In anemia, Retic Count should be HIGH/LOW?
HIGH!
If Retic Count is not high, the probelm is in….
the making/marrow
Either Not enough stuff to make the cell (iron, vitamins, etc.) OR the bone marrow cannot make it (lymphoma, aplastic anemia)
What should you ask of someone who has a high MCV?
Ask about alcohol, B12, Folate, TSH
What should you check for someone with a low MCV?
Ferritin and other iron studies
What to check if Hb, Hct is low:
MCV, RDW and check other CBC components
Order Retic Count, Liver, and Renal Tests
Cervical Cancer most often metastasizes to
Peritoneum
Breast Cancer most often metastasizes to
- Bones
2. Lungs
Colon Cancer most often metastasizes to
Liver
Lung Cancer most often metastasizes to
Brain
Prostate Cancer most often metastasizes to
Bones
Testicular Cancer most often metastasizes to
Lungs
Thrombocytopenia
Low platelets
Low platelets (>50K) symptoms
Easy bleeding/bruising
hematuria
Petechial Rash
Very Low Platelets (5,10, 20K) symptoms
Spontaneous Bleed High risk-brain/GI Bleed Confusion HA Hematochezia Hematemasis
Which cancer causing viral infections are responsible for up to 20% of cancer deaths in low and middle income countries?
HBV/HCV
About ______ of all cancer deaths in 2008 occurred in low and middle income countries
70%
Top Country for Cancer Mortality
Mongolia
Steps in Histologic Diagnosis
- Tumor obtained through biopsy or surgery and evaluated by pathologist
- Type of cancer is determined
- Therapy cannot proceed until this step is completed
Two major classifications of Hematologic Malignancies
- Myeloid
2. Lymphoid
In anemia, the retic count should be (HIGH/LOW)
HIGH
If the Retic count is low, it means the problem is in the
making/marrow
Increased Transferrin (TIBC) is related to which anemia?
Iron Deficient Anemia
Teletherapy
Beams of radiation aimed at a tumor
Brachytherapy
Encapsulated radiation implants
Systemic Therapy
Radionucleotides delivered systemically
49 y/o female presents with SOB and hemoptysis. A bulky lung mass is found and biopsy shows a small cell carcinoma. Due to SVC syndrome, therapy is started urgently with cisplatin/etoposide. 24 hours later, she has mental status changes and refractory oliguria
Acute Tumor Lysis Syndrome
What lab finding will you see with Acute Tumor Lysis Syndrome?
Hyperuricemia Hyperkalemia Hyperphospohatemia Hypocalcemia Axotemia
What types of tumors are most likely to have Acute Tumor Lysis Syndrome when treated?
High-grade lymphomas
Leukemia
Bulky tumors
Usually seen after first round of chemo
62 y/o male with history of squamous cell carcinoma of tonsillar pillar, treated 18 months prior with combined chemo/XRT presents with 2 weeks of worsening fatigue, anorexia, polyuria, with occasional incontinence, constipation, and muscle weakness…
Hypercalcemia
Hypercalcemia Symptoms
Fatigue, anorexia, nausea, constipation, polyuria, polydypsia, weakness, lethargy, apathy, seizures, coma
81 y/o with multiple medical problems presents with 3 months of mid-thoracid back pain, increasing over 1 week. He has no history of cancer and no constitutional symptoms. The pain increased with movement and with lying flat. He denies weakness, paresthesias, or autonomic dysfunction.
Spinal Cord Compression
Previously health 48 y/o man presents with syncope. he desribes 6 months of blurred vision and several weeks of presyncope with exertion. He notes progressive facial swelling and redness
Superior Vena Cava Syndrome
Superior Vena Cava Syndrome is most common with
Bronchogenic Carcinoma and Lymphoma
Symptoms of SVC Syndrome
Dyspnea, chest pain, cough, dysphagia, headache, seizure, altered consciousness, swlling neck/face/arms, venous distention, cyanosis, facial plethora, vocal cord paralysis, Horner’s syndrome
A 20 y/o man with AML develops an asymptomatic fever of 38.1 8 days after first cycle of consolidation chemotherapy. He arrives to the ER with a normal exam EXCEPT temp 38.2, RR 24, HR 132, and BP 70/30.
Neutropenic Fever
29 y/o woman presents with progressive fatigue, dyspnea, blurred vision, and near syncope. She has marked pallor, fever, diffuse nontender lymphadenopathy and pre-retiinal hemorrhages.
Hyperleukocytosis with Leukostasis
Primary Prevention
Remove risk factors
Secondary Prevention
Early detection and treatment
Tertiary Prevention
Reduce Complications