Prostatic Cancers Flashcards
Prostate cancer
1 in every 6 men will develop it in their lifetime
Most common cancer among men, excluding skin
Second leading cause of cancer death in men
Prostate cancer is…
Androgen-dependent adenocarcinoma
- majority of tumors occur in outer aspect of prostate gland
- usually slow-growing
- most common site for metastasis is bone
Risk factors
Age after 50 years
Ethnicity: African American
Family history is non-modifiable risk factor (first-degree relative)
Probable risk factors
Smoking
BPH
Dietary factors
Clinical manifestations
Usually asymptomatic in early stages
Eventually may experience symptoms similar to BPH
Symptoms include
Dysuria Hematuria Hesitancy Urgency Frequency Intermittency Dribbling Nocturia Retention Unable to urinate
Primary screening tools
PSA blood test
DRE
PSA blood test
Elevated levels indicate prostatic pathology, not necessarily cancer
Marker of tumor volume when cancer exists
Also used to monitor success of treatment
Normal PSA level
0-4 mcg/L
Mild PSA elevation can occur because…
Aging BPH Recent ejaculation Acute/chronic prostatitis Long bike rides Cystoscopy Indwelling urethral catheters Prostate biopsies
Diagnostic studies
*Neither a PSA nor DRE is a definitive diagnostic test
Biopsy of prostate tissue is necessary to confirm diagnosis
Elevated levels of prostatic acid phosphatase (PAP) also indicate prostate cancer
Bone scan, CT, MRI with endorectal probe, TRUS
Radical prostatectomy
Retropubic vs perineal approach
Entire gland, seminal vesicles, and part of bladder neck are removed
Retroperineal lymph node dissection usually is done
Considered most effective for long-term survival
Radical prostatectomy complications
Major complications with ED and incontinence Hemorrhage Urinary retention Infection Wound dehiscence DVT Pulmonary emobli
Cryosurgery (cryoablation)
Surgical technique that destroys cancer cells by freezing tissue
Performed as initial and second-line treatment after radiation therapy has failed
Cryosurgery complications include
damage to urethra, urethrorectal fistula, urethrocutaneous fistula
tissue sloughing, ED, urinary incontinence, prostatitis, hemorrage