Genitourinary Flashcards
KIDNEY CANCER
What Type accounts for 90% of cases?
Renal cell carcinoma
KIDNEY CANCER
Where does renal cell carcinoma arise from?
Proximal renal tubular epithelium
KIDNEY CANCER
Aetiology?
Loss in 3p chromosome tumour suppressor gene which causes increased expression of epidermal growth factors
KIDNEY CANCER
Risk factors
Smoking
Drinking
Long term dialysis
KIDNEY CANCER
Symptoms?
1) Haematuria
2) Loin pain
3) Abdo pain
4) weight loss
5) anorexia
KIDNEY CANCER
Diagnostic tests?
- incidental ultrasound- 25% will have mets
- 10% have classic symptoms
KIDNEY CANCER
How can it spread?
It can spread directly through the renal vein or haematogenously via the blood
Direct- Varicocele
Blood- bone, liver, lung
KIDNEY CANCER
Investigations?
- ultrasound
- CT of chest and abdomen to find mets
- IV contrast CT to check individual renal function
- high blood pressure
- FBC- polycythaemia due to EPO secretion
KIDNEY CANCER
Treatment?
- radical or partial nephrectomy
- Angiogenesis- targeting agents for unresectable tumours/ mets
(Tyrosine kinase inhibitors- Sunitinib and sorafenib if mets)
chemo or radio resistant
KIDNEY CANCER
Prognosis score?
- stage
- size
- grade
- necrosis
BLADDER CANCER
What type accounts for 90% of cases?
Transitional cell carcinoma
There is also squamous cell carcinoma
BLADDER CANCER
What is the cause?
Schistosomiasis (snail fever- parasitic flatworms called schistosomes)
BLADDER CANCER
Risk factors?
- smoking
- alcohol
- schistosomiasis
- aromatic amines from the rubber industry
BLADDER CANCER
How is it graded?
Grade 1 = differentiated
Grade 2 = intermediate
Grade 3 = poorly differentiated
BLADDER CANCER
Common spreads?
Blood- lung, livers
Lymph- iliac & para-aortic nodes
BLADDER CANCER
Symptoms?
Painless and haematuria
Recurrent UTIs
Irritable voiding
BLADDER CANCER
Diagnostic Tests?
Urine analysis- ‘MC&S and cytology
Cystoscopy with biopsy
CT urogram for staging
BLADDER CANCER
Risk groups\?
1) >45 with unexplained visible haematuria
2) >60 with unexplained non visible haematuria
3) Visible haematuria that persists after a UTI
BLADDER CANCER
Staging?
Tis- carcinoma in situ Ta- just epithelium T1- lamina propria T2- superficial muscle involved T3- deep muscle involved T4- invasion beyond bladder
BLADDER CANCER
Treatment of Tis/ Ta/ T1 tumours?
1) Transurethral resection of bladder tumour (TURBT)
2) Diathermy
3) Chemo for multiple small tumours
BLADDER CANCER
Treatment for T2/ T3 tumours?
1) Radical cystectomy or radiotherapy as this preserves the bladder
BLADDER CANCER
treatment for T4 tumour?
palliative chemo/ radio + chronic catheter
ACUTE KIDNEY INJURY
Diagnostic criteria/ what is it?
1) Rise in creatinine >26 umol/ L in 48 hrs
2) rise in creatinine >1.5x baseline
3) Urine outpyut <0.5ml/kg/hr for 6 hours
ACUTE KIDNEY INJURY
If there is reduced excretion, what rises?
urea
ACUTE KIDNEY INJURY
Risk Factors?
- Age >75
- CKD
- HF
- Peripheral Vascular Disease
- Sepsis
- Dehydration
ACUTE KIDNEY INJURY
Tests?
- Urgent ABG (K+)
- Urine dipstick
- Bloods- U&E, creatinine, CRP
- ECG
- CXR
ACUTE KIDNEY INJURY
Aetiology of Pre-Renal? (70%)
- Hypotension of any cause
- SEPSIS/ hypovolaemia
- ACE inhibitors
ACUTE KIDNEY INJURY
Aetiology of Intrinsic Renal? (20%)
- Acute tubular necrosis
- result of pre-renal damage such as nephrotoxins
ACUTE KIDNEY INJURY
Aetiology of Glomerular?
Primary golmeruolnephritis
ACUTE KIDNEY INJURY
Aetiology of Post-Renal?
- Obstruction (stones, clots, tumours, BPH)
ACUTE KIDNEY INJURY
What happens if it is left untreated?
Acute tubular necrosis
ACUTE KIDNEY INJURY
How is pre-renal damage suggested and investigated?
Suggested by hypotension/ history
Ix- fluid assessments and treated with IV fluids/ resus
ACUTE KIDNEY INJURY
How is Intrinsic Renal suggested, investigated and treated?
suggested by: Causative drugs/ haematuria. proteinuria on dipstick
Ix- dipstick / renal screen / biopsies
Treat= Early referral
ACUTE KIDNEY INJURY
Investigation and treatment of Post-Renal?
Ix= USS and CT of ureter kidney and bladder (CTKUB)
catheterise and refer to urology to treat obstruction
ACUTE KIDNEY INJURY
Complications?
1) Hyperkalaemia
2) Acute pulmonary oedema
3) ECG- tall T waves, wide QRS, absent P waves
ACUTE KIDNEY INJURY
How is acute pulmonary oedema treated?
high flow O2 + furosemide + Diamorphine + GTN
ACUTE KIDNEY INJURY
How is hyperkalaemia treated?
Calcium gluconate / insulin/glucose and salbutamol
ACUTE KIDNEY INJURY
What is the treatment if the injury is very severe?
haemodialysis / haemofiltration
CHRONIC KIDNEY DISEASE
Definition?
Impaired renal function for >3 months, based on abnormal structure or function of the kidney,
OR GFR <60ml/min/1.73m2 with or without kidney damage
CHRONIC KIDNEY DISEASE
What is evidence of other renal damage?
1) haematuria
2) proteinuria
3) evidence of systemic disease
CHRONIC KIDNEY DISEASE
Cause?
1) DM
2) HTN
3) Glomerulonephritis
4) Pyelonephritis
5) 20% unknown
CHRONIC KIDNEY DISEASE
Which groups are screened for CKD? (checking eGFR)
1) HTN
2) DM
3) Systemic diseases that affect kidney
4) CVS disease
5) Structural renal damage
CHRONIC KIDNEY DISEASE
Signs and Symptoms?
Anaemia = reduced EPO CNS = fits and coma PNS = polyneuropathy CVS = HF, HTN , PVD, Pericarditis Renal = polyuria, nocturia, oedema
CHRONIC KIDNEY DISEASE
Possible affects on bone?
1) renal phosphate retention
2) Impaired vit-D production
3) Bone pain/ osteodystrophy/ osteomalacia
CHRONIC KIDNEY DISEASE
Tests?
Bloods- Hb, FBC, Glucose (DM), U+E, Calcium, PTH
Urine- dipstick, albumin : creatine ratio, MC&S
CHRONIC KIDNEY DISEASE
What are the 5 different stages?
GFR SCORES (ml/min/1.73m2) 1- >90
then go down in 15s e.g 2=60+ 3a=45+ 3b= 30+
5- <15 = established renal failure (over 3 months)
CHRONIC KIDNEY DISEASE
treatment?
(lifestyle control) (oedema) (acidosis) (anaemia) (CVS) (osteodystrophy)
1) Smoking and glycaemic control, BP with ACE-I, CCB, ARB
6) Osteodystrophy and PTH levels - give vit D and calcium
5) CVS- statins and aspirin
4) Anaemia - Iron
2) Oedema - diuretics
3) Acidosis - bicarbonate
KIDNEY STONES/ RENAL COLIC/ CALCULI
Epidemiology?
M:F 3:1, 15% so common, onset around 40-60 years
KIDNEY STONES/ RENAL COLIC/ CALCULI
Where are they classically deposited?
1) Pelviuretic junction
2) Pelvic brim
3) Vesicouretic junction
KIDNEY STONES/ RENAL COLIC/ CALCULI
Types?
1) Calcium oxalate (75%)
2) Magnesium ammonium sulphate (15%)
3) Urate (5%)
4) Hydroxyapatite (5%)
5) Cysteine (1%)
KIDNEY STONES/ RENAL COLIC/ CALCULI
Aetiology of calcium oxalate stones?
- Hypercalcaemia
- Hyperoxaluria (too much oxalate e.g. from rhubarb/spinach)
- Excessive dietary calcium
- excessive bone resorption
KIDNEY STONES/ RENAL COLIC/ CALCULI
Aetiology of Urate stones?
- Hyperuricaemia (gout)
- acidic urine
KIDNEY STONES/ RENAL COLIC/ CALCULI
Aetiology of Cysteine stones?
Cysteinuria (genetic)
KIDNEY STONES/ RENAL COLIC/ CALCULI
Possible causative organism?
1) Klebsiella
2) proteus
3) psuedomonas
KIDNEY STONES/ RENAL COLIC/ CALCULI
How is acidic urine produced?
1) Urease breakdown produces NH3, this increase pH of urine and increases stone risk
2) loss of bicarbonates = acidic & decreased uric acid solubility
KIDNEY STONES/ RENAL COLIC/ CALCULI
signs and symptoms/
- Asymptomatic
- Awful ‘loin to groin’ pain
KIDNEY STONES/ RENAL COLIC/ CALCULI
What are the symptoms? (3)
- Haematuria
- Vomit/ nausea
- Sweating
KIDNEY STONES/ RENAL COLIC/ CALCULI
tests?
Urine- dipstick + mid-stream specimen for MC&S
Imaging - Non-contrast CT of KUB or KUB X-Ray
KIDNEY STONES/ RENAL COLIC/ CALCULI
treatment?
Pain = diclofenac infection= Abx
If 1-2cm = Extra-corporeal shockwave lithotripsy (ESWL)
- Surgery (uretoscopy) / keyhole (percutaneous stone surgery)
Prevention methods for recurrent kidney stones?
1) lots of water
2) Normal dietary calcium
3) Urate = allopurinol/ HCO3-
4) oxalate= pyridoxine
5) Thiazide diuretics reduce calcium excretion
URINARY TRACT OBSTRUCTION
Aetiology?
Lumen - stone, cancer, blood clot
Wall - congenital, nephropathic bladder, stricture
Outside of the Wall, prostate disease, tumour, surgery
What is Hydronephrosis?
Dilation of renal pelvis
URINARY TRACT OBSTRUCTION
upper tract Symptoms?
- loin to groin pain
- worse with fluid
- enlarged kidney
What is anuria?
no urine- complete bilateral obstruction
What is polyuria?
Partial block and loss of concentration mechanisms = excess urination
URINARY TRACT OBSTRUCTION
lower tract symptoms?
- terminal dribbling
- poor flow
- incomplete emptying feeling
- enlarged bladder/prostate
- suprapubic pain
URINARY TRACT OBSTRUCTION
tests?
Bloods
urine
ultrasound then CT second line if hydronephrosis
URINARY TRACT OBSTRUCTION
treatment?
Upper= nephrostomy (opening between kidney and skin) or uretic stent
Lower= Catheter