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NSG 308 Adult Health
Cancer Management
| Question | Answer |
|---|---|
| Cancer Epidemiology | - 57% dx occur in age 65+ Males: Lung, prostate, colorectal Females: Lung, Breast, Colorectal - Slightly higher incidence in females |
| Cancer Carcinogenesis pathophysiology | Initiation -> Promotion -> Progression - Genetic disease -> multiple gene mutations (inherited or acquired) - Initial altered cell forms clone and evade growth regulation/immune response - spread via lymphatic and hematogenous routes - 5-10% cancers w/ familial predisposition (BRCA1/2, MEN1/2 etc) |
| Initiation phase | carcinogens cause DNA mutation -> repair/apoptosis suppression |
| Promotion phase | Proliferation of initiated cells - reversible if removed |
| Progression phase | cells acquire malignant behavior -> metastasize + invade |
| Benign cells | - well differentiated (resemble normal cells) - slow expansion in local tissue w/o tissue damage - Damage to body only if impinging on vital site |
| Malignant cells | - undifferentiated (little resemblance to normal cells) - variable rate of growth - gains access to lymphatic/blood channel or grow across body cavities -> metastasis - cause generalized effects (eg. anemia, wt loss, inflammation) - tissue damage when tumor outgrows blood supply or secrete toxins |
| Anaplastic cells | undifferentiated cells that have lost function of normal cells (cancerous) |
| Cancer classifications | - Carcinoma (epithelial cells; 80-90% of cancers) - Sarcoma (connective/supportive tissue) - Myeloma (plasma cells) - Lymphoma (lymphocytes) - Leukemia (hematopoietic cells/WBCs/Lymphocytes/RBCs) |
| Adenocarcinoma | Glandular epithelial cells (organs/glands capable of secretion) |
| Squamous cell carcinomas | Squamous epithelial cells (covering/lining internal or external body surfaces) |
| Osteosarcoma | Bone cancer - Most common form of bone cancer |
| Chondrosarcoma | Cartilage tissue - Rare, arise from within bone |
| Liposarcoma | Adipocytes (from deep soft tissue) |
| Leiomyosarcoma | Smooth muscle cells - very rare |
| Rhabdomyosarcoma | Skeletal muscle cells - most common in children |
| Mesothelial Sarcoma/Mesothelioma | Membrane tissue lining body cavities - asbestos - Eg. pleura/peritoneum |
| Angiosarcoma | Blood vessels - possibly d/t occupational vinyl chloride if liver involvement |
| Myeloma | Plasma cells (B-cell lymphocytes) - plasma cells produce Ab |
| lymphoma | Hodgekin vs Non-Hodgekin - involve lymph nodes or body organs |
| Myelogenous leukemia | White blood cells AML (acute myelogenous leukemia) |
| Lymphocytic Leukemia | Lymphocytes - ALL (acute lymphocytic leukemia) |
| Erythremia | RBC leukemia - Eg. Polycythemia vera - Overproduction of RBC w/ association to increase WBC/PLT - Risk of additional bone marrow disease |
| Cancer modifiable risk factors | - Smoking (most lethal, ~30% cancer deaths) - EtOH - poor diet (processed/red meat, low fiber) - sedentiary/obesity - UV - Occupational (eg. Asbestos/vinyl chloride) - Infection (HPV, HBV, EBV, HP) |
| Cancer nonmodifiable risk factos | - Age (most at 50+) - Genetics (BRCA1/2, MEN 1/2) - Race/Sex/Ethnicity - Hormonal (early menarche, menopause, nulliparity) - FHx (3 gen pedigree) - immunocompromised (transplant status/HIV+AIDS) |
| Drivers of Cancer Health Disparities | - low income/poor socioeconomic status - Cultural/dietary - Environmental exposure - Biological/genetics - Geographic location |
| Highest Burden Groups of Cancer | - Non-hispanic black = highest CA mortality rate - Hispanic/Latino = lower incidence but higher mortality - Rural/underserved - Low socioeconomic status |
| Primary Cancer Prevention | RISK REDUCTION - Lifestyle + health promotion/counseling - Nutrition + physical activity (>150 min/week moderately) - Vaccinations (HPV, HBV) - Smoking/EtOH cessation |
| Secondary Cancer Prevention | SCREENING (early detection) - ACS recommended screenings - Identify precancerous lesions - Reduce advance disease morbidity - Address access barriers |
| Tertiary Cancer Prevention | SURVIVORSHIP/SURVEILLANCE - Monitor for recurrence - Screen for secondary malignancy - Health promotion/Lifestyle modification |
| Breast CA Screening guidelines | Mammogram Start age 45 |
| Cervical CA screening guidelines | HPV or PAP co-test start age 25` |
| Colorectal CA screening guidelines | Colonoscopy or stool test 45-75 age |
| Lung CA screening guidelines | LDCT for high risk 50+ with 20/pack year age 50-80 |
| Prostate CA screening guideline | Shared decision making (PSA/US) Start age 50 |
| PET scans | evaluate biologic activity of organ |
| Fluoroscopy | real time X-Ray for dense tissue |
| Vascular imaging | contrast for blood flow |
| Nuclear medicine | imaging with radioisotopes |
| Radioimmunoconjugates | mAb + radioisotopes irradiated antibody specifically bind to cancerous sites to kill malignancy |
| Types of tissue Biopsies | Excisional - an entire lump or abnormal tissue is removed Incisional -small portion of a suspicious tissue or lesion is removed Needle - thin needle is used to remove a small sample of tissue |
| TNM Tumor Staging | "how far has the cancer spread" T = Primary tumor size/local tissue invasion (Tis = in situ, T1-T4) N = regional lymph node (N0-N3) M = distant metastasis (M0-M1) - "x" suffix = cannot be assessed (Eg. Tx, Nx, Mx) |
| TNM Tumor Grading | "how abnormal do the cells look" I - Well differentiated (resemble tissue of origin) II - Moderately differentiated III - Poorly differentiated IV - Anaplastic/aggressive (poor prognosis) |
| Carcinoma in situ definition | group of abnormal cells that are localized and have not spread - looks like cancerous cells but may be precancerous |
| Anatomic stage grouping | I = Small, localized II = Larger or minor spread III = Regional spread IV = Distant metastasis |
| Treatments for cancer | - Surgery (diagnostic, primary, ppx, palliative, reconstructive) - () - Chemotherapy (cell cycle specific/nonspecific, combination regimens) - HSCT (allogeneic, autologous, syngeneic stem cell transplant) - Immunotherapy (CAR-T, mAb, cytokines) - Targeted (molecular targets eg. TKI, mAb, hormonal) |
| HSCT | hematopoietic stem cell transplant |
| SLNB | sentinel lymph node biopsy - minimally invasive nodal staging |
| Nursing management for surgery (cancer) | Pre-op = assessment + verbal/written teaching Post-op = monitor pain/nutrition/activity/wound Discharge = F/U, home care, community resource - watch for complications - Lymphedema precaution w/ axillary dissection - Body image/psychosocial support |
| EBRT | - External beam radiation therapy (most common radiation therapy) - intensity modulated radiotherapy - high power radiation to tumor (specialized EBRT) - stereotactic modulated radiotherapy (few large doses) |
| Brachytherapy | - internal implant placed next to tumor HDR (high dose rate) vs LDR (low dose rate) Safety: TIME, DISTANCE, SHIELDING |
| Systemic radioisotopes | radiation therapy via radioisotopes - Eg. I-131, Ra-223 |
| Radiation therapy | EBRT, brachy therapy, systemic radioisotopes, IMRT/IGRT - Lethal dose = 95% tumor killed (normal tissue spared) - Fractionation/SBRT minimize healthy tissue injury - EBRT < IMRT < SBRT |
| Toxicity and implant safety (RT) | - Acute toxicity (<6 wks) = radiodermatitis, mucositis, N/V, fatigue - Late = fibrosis, atrophy, ulceration, 2ndary malignancy - Most sensitive tissues are bone marrow, lymph, GI, hair follicle, gonads - Private room, signage, dosimeter, <30 min visit, 6 ft distancing - Pregnant staff/children not assigned |
| IGRT | image guided radiotherapy; basically IMRT with CT/XR imaging for mobile organs |
| Chemotherapy safe handling | - Class II/III biological safety cabinet (BSC) - Closed system transfer device + leak proof IV bag PPE: double layer gloves, gown, N95, eye protection Disposal: chemo-hazardous containers - ONS/ASCO standards (quality program w/ monitoring) |
| Chemotherapy acute risks | - Extravasation: leakage into tissue (irritant vs vesicant) - Vesicants => tissue necrosis (need trained staff + antidotes) - Hypersensitivity - IgE or non IgE - Immediate (5-6 mins) or delayed Action: STOP infusion + follow emergency protocol |
| SVC Syndrome | Oncologic emergency Superior vena cava syndrome = obstruction/compression of SVC S/S: Dyspnea, cough, angioedema, dilated chest veins Tx: Radiation/Chemo/AC; avoid upper extremity sticks |
| Spinal cord compression | Compression by cancer metastasis to bone (it shatters) S/S: Back/neck pain, motor loss, urinary retention Tx: MRI, steroids, radiation, surgery |
| Hypercalcemia (oncologic emergency) | S/S: fatigue, confusion (Ca >10.4 mg/dL) Tx: IV hydration, biphosphonates |
| Tumor lysis syndrome | Oncologic emergency Tumor death release a lot of electrolytes + uric acid into body S/S: hyperkalemia, hyperuricemia, AKI Tx: fluids, allopurinol, electrolyte correction |
| Chemotherapy nadir | lowest point of blood cell count in chemo therapy - 7-14 days usually |
| Oncologic emergencies | - SCV Syndrome - Spinal cord compression - Hypercalcemia - Tumor lysis syndrome |