Tuesday, August 7, 2012

Pathophysiology - Cancer

Breast Cancer
  • Found most in upper outer quadrant of the breast
  • Adenocarcinomas; most common, arise from epithelial tissues
Incidence
  • Increase with age; women older than 40
  • Hereditary: first degree relative with breast cancer, past breast cancer
  • Menarche before age 12, menopause after age 55
  • Nulliparity/parity after age 35
  • High-fat diet, obesity
  • Longer exposure to estrogen
Diagnostic evaluation
  • yearly mammogram starting age 40 and continue for as long as a woman is in good health
  • Clinical breast exam every 3 years in 20’s and 30’s and yearly for age 40 and over
  • Monthly self-breast exam performed immediately after menstruation, use the clock to describe location of the mass
Mastectomy
  • Simple mastectomy
    • Removal of mammary tissue of the breast
  • Partial mastectomy
    • Removal of about 1/3 portion of the breast
  • Radical mastectomy
    • Removal of breast, pectoral muscles and axillary nodes
  • Modified radical mastectomy
    • Removal of breast, axillary and apical nodes and preservation of pectoral muscles
  • Extended radical mastectomy
    • Removal of internal mammary nodes, breast, pectoral muscles, and axillary nodes
Nursing Care
Semi-fowler’s position, arms and hands elevated (promotes drainage and prevents edema)

Prostate Cancer
  • African-American men and men with a strong family of one or more first degree relatives, father, and brother diagnosed at an early age
Diagnostic test
  • Should begin testing both  prostate specific antigen (PSA), blood test and digital rectal examination at age 45, age 40 for men at even higher risk
Skin Cancer
  • Very common among Caucasians (white-skinned) due to exposure to UV radiation because of lesser amount of melanin in the skin
  • Carcinoma- malignant neoplasm of epithelial tissue
Cervical Cancer
  • Yellowish, blood-tinged, foul-smelling vaginal discharge
  • Flank pain, leakage of feces/urine
  • Multiple sex partners
Diagnostic Test
  • Cervical cancer screening 3 years after having vaginal intercourse but no later than when they are 21 years old unless a woman had a total hysterectomy
Treatment
  • Radium
    • Interferes with DNA replication and mitosis
    • Destroys cells in the bone marrow (bone marrow depression)
    • Unstable substance, disintegrates spontaneously and produces harmful radiation
    • Stored in lead containers that function as barrier
    • Radiology department is responsible for handling by the use of forceps, not the nurse
  • Nursing care
    • Isolation
    • Strict bed rest
    • Flat in bed
    • If used in the skin, assess for redness and irritation, wash with water only

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