Urology Flashcards
Define Symptomatic non-visible haematuria (s-NVH)
microscopic haematuria or dipstick-positive haematuria with associated symptoms
including lower urinary tract symptoms (LUTS): hesitancy, frequency, urgency, dysuria
What are the common causes of haematuria
UTI, bladder tumours, urinary tract stones, urethritis, benign prostatic hypertrophy (BPH) prostate cancer.
How can you classify causes of haematuria
Infection: cystitis, tuberculosis, prostatitis, urethritis, schistosomiasis, infective endocarditis.
Tumour: renal carcinoma, Wilms’ tumour, carcinoma of the bladder, prostate cancer, urethral cancer or endometrial cancer.
Trauma: renal tract trauma due to accidents, catheter or foreign body, prolonged severe exercise, rapid emptying of an overdistended bladder (eg, after catheterisation for acute retention).
Inflammation: glomerulonephritis, Henoch-Schönlein purpura, IgA nephropathy, Goodpasture’s syndrome, polyarteritis, post-irradiation.
Structural: calculi (renal, bladder, ureteric), simple cysts, polycystic renal disease, congenital vascular anomalies
Haematological: sickle cell disease, coagulation disorders, anticoagulation therapy.
Surgery: invasive procedures to the prostate or bladder.
Toxins: sulfonamides, cyclophosphamide, non-steroidal anti-inflammatory drugs
What questions are important to ask in a haematuria history
LUTS symptoms - dysuria, freq, hesitancy, urgency
where - in urine/on wiping
pain - intermittent, constant, loin to groin
TURP in past?
DH - anticoag
smoking
jobs - carcinogens
How would you investigate haematuria?
urine dip - ?UTI eGFR, U+E, FBC, ?PSA MSU USS KUB, flexible cystoscopy TURB
What kinds of bladder cancer are there? What percentage of each kind?
transitional - 90%
squamous 10%
What are hte risk factors for bladder cancer?
Transitional: Smoking Exposure to aniline dyes in the printing and textile industry: examples are 2-naphthylamine and benzidine Rubber manufacture Cyclophosphamide
squamous: Schistosomiasis Calmette-Guérin (BCG) treatment Smoking recurrent UTI bladder stones long term catheter
What are the criteria for a 2 week wait bladder cancer referral?
Aged 45 and over and have:
Unexplained visible haematuria without urinary tract infection or
Visible haematuria that persists or recurs after successful treatment of urinary tract infection
Aged 60 and over
and have unexplained non-visible haematuria
and either dysuria or a raised white cell count on a blood test
What are the symptoms of bladder cancer?
painless haematura
voiding problems
What can cause a false positive for blood on a dipstick?
menses
exercise
myoglobin-
What investigations need to be done to stage bladder cancer?
CT with contrast enhancement
For patients with confirmed muscle-invasive bladder cancer, CT of the chest, abdomen and pelvis is the optimal form of staging, including CT urography for complete examination of the upper urinary tracts
What is the difference between papillary and non-papillary bladder cancer
a non-invasive, papillary tumour protruding from the mucosal surface is less aggressive
a solid, non-papillary tumour that invades the bladder wall has a high propensity for metastasis.
What is considered when deciding on the management of bladder cancer
whether it invades the muscle layer or not
staging TNM
PS
What is the treatment of low risk non-invasive bladder cancer
TURBT = transurethral resection of bladder tumour
ensuring that detrusor muscle is obtained
give a single dose of intravesical mitomycin C
What is the treatment of intermediate risk non-invasive bladder cancer
TURBT
at least 6 doses of intravesical mitomycin C
What is the treatment of high risk non-invasive bladder cancer
TURBT
radical cystectomy
or
intravesical BCG
What is the treatment for muscle invasive bladder cancer
neoadjuvant chemotherapy using a cisplatin combination regimen
radical cystectomy or radical radiotherapy
or palliative chemo/radio
What happen to the urine after a radical cystectomy?
ileal conduit
- to form urostomy
ureters plumbed into part of ileum
bladder reconstruction
- continent cutaneous diversion (catheterisable stoma to pouch of bowel containing urine)
- orthoptic neobladder (segment of the small intestine forms reservoir for urine. The ureters and urethra are attached to the neobladder, allowing voiding)
What are the risks of radical cystectomy
bowel obstruction,
obstruction of the ureter,
pyelonephritis
infection of the wound.
damage to the S2,3,4 outlet causing complete erectile dysfunction
Orthotopic bladders have a risk of urinary incontinence.
What are the risk factors for prostate cancer
age
family history
ethnicity - black>white>asian
FH - breast, ovarian, prostate (BRCA2)
Explain the screening of prostate cancer
no formal screening program
instead NHS Prostate Cancer Risk Management Programme
patients can ask for a PSA, but there needs to be informed consent
What are the problems with screening for prostate cancer
Most men with prostate cancer detected by PSA testing have tumours that will not cause health problems (over-diagnosed)
but almost all undergo early treatment (over-treated)
treatment leads to reduced quality of life
not cost effective
What is PSA
serine protease enzyme produced by normal and malignant prostate epithelial cells
liquefies semen
What can cause a raised PSA
Acute urinary retention. Benign prostatic hyperplasia. Old age. Prostatitis. Prostate cancer. Transurethral resection of the prostate. Urinary catheterisation.`
Why is PSA raised in prostate cancer
disordered glands
more PSA leaks into semen
What are the symptoms of prostate cancer
bladder outlet obstruction: hesitancy, urinary retention
haematuria, haematospermia
pain: back, perineal or testicular
erectile dysfunction
Why is prostate cancer often asymptomatic
cancers tend to develop in the periphery of the prostate
therefore don’t cause obstructive symptoms early on.
What would prostate cancer feel like on DRE
asymmetrical, hard, nodular enlargement with loss of median sulcus, lack of mobility
What investigations are done in suspected prostate cancer
DRE
PSA, U+E, eGFR
TRUS biopsy
How is the TRUS biopsy carried out
trans rectal USS
take biopsy of 12 cores
What is the Gleason grade and how is it calculated
the two most common types of glandular growth patterns within the tumour biopsy are graded.
A grade from the scale is given to each of these two patterns.
The two grades are added together to get the total Gleason score.
For example, if the grade given to the most common growth pattern is 3 and the grade given to the second most common growth pattern is 4, the total Gleason score is 7 (3 + 4).
Above what Gleason grade is a prostate cancer high risk?
> =4+3
What investigations need to be done for prostate cancer to be staged
DRE
PSA
MRI pelvis
bone scan
What are the treatment options for localised prostate cancer (T1/T2)
conservative: active monitoring & watchful waiting
radical prostatectomy
radiotherapy: external beam and brachytherapy
What is the difference between active monitoring and watchful waiting in prostate cancer?
You have active surveillance if the doctor aims to cure your cancer if it starts to grow.
You have watchful waiting if the doctor aims to control your cancer if it starts to grow.
What does active monitorting of prostate cancer involve?
In year one of active surveillance you have:
PSA levels – every 3 to 4 months
DRE every 6 to 12 months
biopsy after 12 months
In year 2 to year 4 you have:
PSA levels – every 3 to 6 months
DRE every 6 to 12 months
In year 5 and afterwards you have:
PSA levels – every 6 months
DRE – every 12 months
What does watchful waiting of prostate cancer involve?
PSA every year
investigation if symptoms appear
Who is watchful waiting of prostate cancer suitable for?
locally advanced or advanced cancer with no symptoms
localised cancer but multiple comorbidities
What is the difference between locally advanced and advanced prostate cancer?
Locally advanced = spread to nearby tissues.
Advanced = spread to distant lymph nodes or other sites
What are the treatment options for Localised advanced prostate cancer (T3/T4)
hormonal therapy with LHRH analogues eg. goserelin, leuprorelin, and triptorelin
radical prostatectomy
radiotherapy: external beam and brachytherapy
+adjuvant chemo
How do hormone treatments for prostate cancer work?
LHRH analogues eg goserelin, leuprorelin, and triptorelin
LHRH stimulates pituitary gland to make LH, leading to an initial increase in testosterone. therefore need to give antiandrogen cover for first two weeks
prolonged exposure then leads to down regulation of the LHRH receptors at the pituitary, so there is eventual androgen deprivation as the testes no longer produce testosterone
What are the treatment options for metastatic prostate cancer?
Bilateral orchidectomy
continuous LHRH agonist treatment + docataxel chemo
single dose radiotherapy
bisphosphonates for mets
What indicates high risk prostate cancer
PSA >20mg/ml
Gleason score 8-10
stage >=T2c
Define urolithiasis
formation of stone in the urinary tract
define renal colic
intermittent severe loin to groin pain caused by presence of renal stones
What are renal stones made out of
calcium phosphate
calcium oxalate
uric acid
struvite
What is the most common material for renal stones to be made of
calcium oxalate
Which renal stones are radio lucent
uric acid
Which are the most common sites for renal stones
ureteropelvic junction
as the ureter crosses the iliac vessels
vesicoureteric junction
Describe the pathophysiology of renal colic
obstruction of ureter
tension in wall of ureter leads to prostaglandin release
causes vasodilation and smooth muscle spasm
What are the risk factors of renal colic
dehydration prev stone obesity diet - oxalate, urate, animal protein drugs - calcium or vitamin D supplements, protease inhibitors, diuretics PMH - parathyroid, RTA, gout kidney malformations - horseshoe, strictures, family history
What are the signs and symptoms of renal colic
loin to groin extreme pain sudden onset, comes and goes fever, UTI sx if infection cannot keep still N+V tender renal angle/loin
What is the differential diagnosis for renal stones
urinary: pyelonephritis
abdo: biliary colic, peritonitis, appendicitis
gynae: ectopic pregnancy, ovarian cyst, PID
vascular: AAA dissection
What investigations should be done in renal stones
urine dip
FBC U+E CRP, bone profile, clotting, urate
MSU - microscopy, culture and specificity
CT KUB without contrast
What is the immediate management of renal stones
IM diclofenac for pain relief
anti emetics
fluids if dehydrated
What are the signs of an emergency case of renal stones
any sign of concurrent infection
increased risk AKI: solitary or transplanted kidney, CKD, bilateral stones
What is the management of an emergency case of renal stones
nephrostomy
ureteric catheter
ureteric stent
What are the indications for conservative management of renal stones
<5mm stone
no obstruction present
Who is extracorporeal shockwave lithotripsy suitable for as a treatment of renal stones
stone <2cm
not pregnant
Who is ureteroscopy suitable for as a treatment of renal stones
stone <2cm
pregnant
Who is percutaneous nephrolithotomy suitable for as a treatment of renal stones
stones >2cm
Complex renal calculi
staghorn calculi
Describe extracorporeal shockwave lithotripsy
shock waves are directed over the stone to break it apart.
The stone particles will then pass spontaneously.