Genitourinary Cancer Flashcards
Objectives
Renal Cell Carcinoma Pathophysiology
- Most commonly originates in the epithelial lining of the proximal convoluted tubule
- Hereditary and nonhereditary forms
Renal Cell Carcinoma Incidence
- Approx 74,000 new cases per year
- Approx 15,000 deaths from RCC
- new cases inc by 1%/yr (2006-2015)
- Median age of diagnosis – 64 years old
- Men > Women
RCC risk factors
- Cigarette Smoking
- Obesity
- Hypertension
- Occupational exposure
- Cadmium, asbestos, petroleum by-products
- Long term renal dialysis
- Acquired renal cystic disease
- Genetic disorders
- Chronic hepatitis C infection
RCC classic triad of signs and symptoms
- Hematuria, microscopic or gross
- Flank pain
- Palpable mass, abdominal or flank
**Most asymptomatic and found incidentally on radiographic imaging
RCC Signs and Symptoms
- Weight loss
- Fever
- Hypertension
- Night sweats
- Malaise
- Varicocele in males
- Most commonly left sided due to obstruction of gonadal vein
- Paraneoplastic syndromes
- Erythrocytosis, hypercalcemia, hypertension, hepatic dysfunction
RCC Dx imaging
- Ultrasound
- CT
- MRI
**Becoming more commonly diagnosed with more frequent use of imaging
RCC Dx Via Tissue
- Biopsy
- Limited
- Concerns regarding sampling error, technical failure, procedure complications, and biopsy tract seeding
- Can be used to confirm diagnosis in patients who are not surgical candidates
- Preferable to biopsy a metastatic lesion
- Partial or Radical Nephrectomy
RCC subtypes
- Clear cell (75-85%)
- Papillary (10-15%)
- Chromophobe (5-10%)
- Oncocytic (3-7%)
- Collecting duct (Bellini’s duct, very rare)
RCC Stage 1 description
Tumor diameter of <7 cm, limited to the kidney. No lymph node involvement or distant metastases
RCC Stage 2 description
Tumor >7.0 cm but limited to the kidney. No lymph node involvement or distant metastases
RCC Stage 3 description
Tumor any size with the involvement of a nearby lymph node but no distant metastases, with or without spread to fatty tissue around the kidney, with or without spread into the large veins leading from the kidney to the heart.
OR
Tumor spread to fatty tissue around the kidney and/or spread into the large veins leading from the kidney to the heart, but distant metastasis
RCC stage 4 description
Tumor spread directly through the fatty tissue and the fascia ligament-like tissue surrounding the kidney.
OR
Involvement of >one lymph node near the kidney
OR
Involvement of any lymph node not near the kidney
OR
Distant metastases, such as in the lungs, bone, or brain.
RCC staging image
RCC Staging is done via…
- Abd/pel CT
- Bone scan
- Bone pain or elevated alkaline phosphatase
- Chest CT or CXR
- MRI if suspect invasion into vena cava or atrium
MC sites of RCC metastasis
- Neighboring lymph nodes
- Lungs
- Liver
- Bones
- Brain
RCC prognosis
- Clear cell considered most aggressive of the common histologies
- Papillary and chromophobe are generally more indolent
- Mixed renal tumors can occur in up to 5% of cases with prognosis dictated by more aggressive subtype.
Localized RCC Tx w/ surgery
- Isolated solid renal masses, resectable stage I, II, III
- both diagnostic and curative
- Radical or partial nephrectomy
Localized RCC Tx w/ active surveillance
- <2-3cm with repeat imaging q3-6 months
Localized RCC Tx w/ ablative procedures
- Cryotherapy
- Radiofrequency Ablation
Advanced RCC Tx
- Consider debulking nephrectomy
- Systemic Therapy
- Immunotherapy
- Can consider radiation therapy with disseminated disease
- Chemotherapy has shown little effect
RCC take-away points
- Linked to smoking
- Hematuria
- Paraneoplastic syndromes
- Common incidental finding of renal mass for imaging to evaluate another symptom
- Diagnose = Usually ultrasound first
- Treatment = nephrectomy
- Depends on stage
Prostate Cancer Description
- Adenocarcinoma (>95%)
- MC region is the peripheral zone 70%
- Outer portion palpable on DRE
- 10-20% transitional zone
- Portion surrounding urethra
- ~5% central zone
- portion of prostatic urethra with ejaculatory ducts
Prostate Cancer Incidence
- Estimated 174,650 new cases diagnosed in 2019
- Rarely diagnosed in men younger than 40 y/o
- 1 in 5 AA men diagnosed in their lifetime
- 1 in 6 Caucasian men diagnosed in their lifetime
Prostate Cancer Risk Factors
- Advanced age
- Disease of aging
- incidence peaks between 65-74 y/o
- Family history
- Diet, obesity
- Ethnicity
- AA>W
- Genetic Factors/mutations
Prostate Cancer Symptoms
- Rare for patients to present with symptoms, usually asymptomatic in early stages
- Nonspecific urinary symptoms, uncommon
- Hematuria, hematospermia
- Late stages
- Bone pain, weight loss, weakness, fatigue, urinary symptoms
- Presenting with elevated PSA
Prostate Cancer Signs
- PSA
- Protein made solely by prostate glands
- Not specific for malignancy
- Can be elevated in benign conditions
- PSA increase >0.75ng/DL in one year is concerning
- Digital Rectal Examination
- Prostate nodules, induration, asymmetry
Prostate Cancer Dx
- Prostate biopsy
- Elevated PSA or abnormal DRE
- 12 cores
- Continue to follow PSAs and DREs
- Transrectal Ultrasound, guiding prostate biopsy
- MRI prostate
Prostate Cancer Staging Work-up
- PSA > 10ng/ml
- Gleason score ≥7
- Physical findings that suggest T3 disease
- Nuclear bone scan
- CT A/P
Prostate Cancer Metastasis
- Bones
- Lymph nodes
- Brain
- Liver
- Lungs