Urology Flashcards
Define an isolated UTI
Interval of >6 months between urinary infections
Define recurrent UTI
> 2 infections in 6 months
OR
> 3 infections within 12 months
Common causative organisms of UTIs
- Klebsiella
- E. Coli
- Enterococci
- Proteus
- Pseudomonas
- S. Saprophyticus
- Candida albicans (patients on long-term antibiotics)
- Cryptococcus (immunosuppressed patients)
- Schistoma (Middle Eastern countries)
- Mycobacterium TB
Risk factors for cystitis
- Urine stasis/outflow obstruction
- Foreign body e.g. stone, catheter, instrumentation
- Immunosuppression e.g. diabetes, malignancy
- Congenital lower urinary tract abnormalities
- Pregnancy
- Sex - males in infancy and after >40, female after puberty
- Smoking
- Menopause
Risk factors for pyelonephritis
- Urinary tract obstruction (congenital or acquired)
- Vesicoureteral reflux
- Foreign body e.g. stones, instrumentation, catheter
- Sexual intercourse
- Immunosuppression e.g. diabetes, HIV, lymphoma
Clinical features of cystitis
- Urgency
- Dysuria
- Frequency
- Polyuria
- Haematuria
- Supra-pubic pain
- Urethral burning
Clinical features of pyelonephritis
- Lower UTI symptoms (dysuria, urgency, frequency)
- Malaise
- Fever/chills
- Loin pain
- Nausea/vomiting
Which UTI patients require further investigation?
- Recurrent UTIs
- Frank haematuria
- Men with UTIs
- Children with UTIs
What investigations would you consider in a patient with UTIs?
- Urine dipstick
- Urine C&S
- Blood cultures
- Post-void residual volume scan
- Renal US
- Plain X-ray KUB
- Flexible cystoscopy
When is a urine dipstick indicated in a women with a suspected UTI?
- Women <65, otherwise healthy, <2 classic UTI symptoms or unclear diagnosis
Management of uncomplicated in a female patient
1) 3 days Trimethoprim PO
2) 3 days Nitrofurantoin PO
Management of cystitis in a male patient
1) 7 days Trimethoprim PO
2) 7 days Nitrofurantoin PO
Management of pyelonephritis
1) Gentamicin + Amoxicillin IV
2) Gentamicin + Vancomycin
Lifestyle advice/conservative management for a patient with a UTI
- Maintain high fluid intake
- Regular bladder emptying
- Avoid spermicides
- Drink cranberry juice
- Use oestrogen replacement
- Urinate after intercourse
- Wipe front to back
Contra-indications for nitrofurantoin
- Pyelonephritis
- eGFR<45
- In combination with alkalising agents
Complications of pyelonephritis
- Renal papillary necrosis
- Perinephric abscess
- Pyonephrosis
- Chronic pyelonephritis
- Fibrosis and scarring
Common pathogens causing Epididymitis/orchitis
Sexually active men <35:
- N. Gonorrhea
- C. Trachomatis
- Coliforms
Older men or children:
- E. Coli
Clinical features of orchitis/epididymitis
- Fever
- Testicular swelling
- Scrotal pain (may radiate to the groin)
- Scrotal erythema
- Reactive hydrocele
- Evidence of underlying infection e.g. urethral discharge, urethritis, cystitis, prostatitis
Main differential for orchitis/epididymitis
Testicular torsion - surgical exploration required if any uncertainty
What investigations would you consider in a patient with ?orchitis/epididymitis?
- Bloods - FBC, U&Es, CRP, blood cultures
- Urine dipstick and MSU
- Urethral swab
- Scrotal ultrasound
Management of a man <35 (or with suspected C. trichomatis) with orchitis/epididymitis
14 days BD Ofloxacin
Or
Single dose azithromycin
Management of a man >35 (or with suspected Gonorrhoea) with orchitis/epididymitis
14 days BD Ciprofloxacin
Common pathogens in prostatitis
Klebsiella E. Coli Enterococci Proteus Pseudomonas S. Saprophyticus
Clinical features of acute prostatitis
- Malaise
- Fever/rigors
- Difficulty passing urine
- Dysuria
- Perineal/rectal/lower back tenderness
- Haematuria
Typical DRE findings in acute prostatitis
Soft, tender enlarged prostate
May be boggy if prostatic abscess present
Investigations to consider in a patient with ?acute prostatitis
- DRE
- MSU C&S
- Bloods - FBC and blood culture
Treatment of acute prostatitis
2-4 weeks ciprofloxacin
Main complication of acute prostatitis
Prostatic abscess
Clinical features of chronic bacterial prostatitis
- Recurrent exacerbations of acute prostatitis symptoms
- Recurrent UTIs with the same organism
Patients are frequently asymptomatic with a normal prostate on DRE
Investigations to be considered in a patient with ?chronic bacterial prostatitis
- DRE (frequently normal)
- Urinalysis (colony counts in expressed prostatic secretion and urine void) - massage colony counts should exceed initial and MSU samples by >10x
Management of chronic bacterial prostatitis
3-4 months of fluoroquinolone + alpha blocker
Clinical features of chronic abacterial prostatitis
- > 3 months of localised pelvic/perineal/suprapubic/penile/groin/lower back pain
- Pain on ejaculation
- Lower UTI symptoms
- Erectile dysfunction
Investigations to consider in a patient with ?chronic abacterial prostatitis
- NIH-CPSI questionnaire
- PVR
- Segemented urine and expressed prostatic secretions C&S
- Semen analysis
- Urethral swab
- Urine cytology
- Urodynamics
- Cytoscopy
- TRUS
- PSA
Management options for chronic bacterial prostatitis
- Conservative options e.g. counselling, biofeedback, education, anxiety reduction
- Alpha blockers
- Antibiotics
- Anti-inflammatory medications
- 5-alpha-reductase inhibitors
- Neuromodulation
- Prostatic massage (2-3/week for 6 weeks with antibiotics)
- Pain team referral
3 causes of transient haematuria
- Vigorous exercise
- Sexual intercourse
- Menstruation
3 benign causes of visible haematuria
1) UTI
2) BPH
3) Stones
3 malignant causes of visible haematuria
1) Bladder cancer
2) Renal cell carcinoma
3) Upper tract transitional cell carcinoma
Causes of haematuria
- Coagulation disorders
- Haemophilia
- Sickle cell disease
- Tumours e.g. renal, bladder, ureteric, prostate
- BPH
- Trauma
- Stones
- Infection
- Circulatory disorders e.g. vascular malformations, renal infarction
- Medications e.g. anticoagulants, penicillin, cyclophosphamide
- Autoimmune disease e.g. IgA nephropathy, glomerulonephritis, HSP
- Inflammatory disorders e.g. interstitial cystitis
Investigations to perform in a patient with visible haematuria
1) Bloods - FBC, U&Es, CRP, clotting screen, group and save
2) MSU C&S
3) Flexible cytoscopy
4) CT Urogram or IVU and renal USS
(and vital signs for signs of haemodynamic compromise)
Red flags for visible haematuria
- Blood clots
- Anaemia
- Haemodynamic instability
What would you do with a patient with visible haematuria and red flag symptoms?
IMMEDIATE referral to SAU for bladder irrigation
All visible haematuria should be investigated with ??? within ?? weeks
Flexible cystoscopy
2 weeks
All symptomatic non-visible haematuria should be investigated with ?? within ?? weeks
Flexible cystoscopy
4-6 weeks
All asymptomatic non-visible haematuria patients under age ?? should be referred to ??
40
Renal
(refer those over 40 to urology)
Main type of cancer in bladder cancer
Transitional cell carcinoma
Risk factors for bladder cancer
- Smoking (TCC)
- Previous pelvic radiotherapy
- Aromatic hydrocarbons (TCC)
- Chronic inflammation (SCC)
- Schistosomiasis infection (SCC)
- Exposure to other carcinogens found in the urine (TCC)
- Male sex (3:1 male: female ratio)
- Age (incidence rises >50, peaks at 70
What percentage of bladder cancers are superficial non-muscle invasive cancers>
80%
Clinical features of bladder cancer
- VISIBLE PAINLESS HAEMATURIA
- Microscopic haematuria
- Storage related lower urinary tract symptoms
- Anaemia symptoms (breathlessness, palpitations)
Management steps for a NIMBC
1) TURBT and single dose intravesical chemotherapy with Mitomycin C
2) Further TURBT after 6 weeks to ensure adequate resection (in those with high grade disease or no detrusor muscle in initial resection)
3) Intravesical immunotherapy with BCG to reduce recurrence risk (those with recurrent/multifocal disease)
4) Long term cystoscopy follow up
Management of a MIBC
1) TURBT and single dose intravesical chemotherapy with Mitomycin C
2) Radical cystectomy and urinary division
OR
Radical radiotherapy
3) Chemotherapy with cisplatin
Prognosis for bladder cancer patients
- > 90% at 5 years for low grade tumours
- ~50 at 5 years for high grade/invasive tumours
Risk factors for renal cell carcinoma
- Smoking
- Obesity
- Cadmium exposure
- Employment in the leather industry
- Von Hippel Lindau syndrome
- Male (3:1 male: female ratio)
- Age (peak incidence between 50-60)
Clinical features of renal cell carcinoma
Usually ASYMPTOMATIC (50%)
10% present with the ‘too late triad’:
1) Visible haematuria
2) Flank pain
3) Palpable mass
Can present with paraneoplastic syndromes:
- Anaemia
- Polycythaemia
- Raised ESR
- Hypercalcaemia
- Erythocytosis
- Hypertension
- Abnormal LFTs
- Decreased WCC
- Fever
- Hepatic necrosis
- Peripheral oedema
30% present with symptoms of metastasis:
- Bone pain
- Night sweats
- Fatigue
- Weight loss
- Haemoptysis
Common sites of metastasis of renal cell carcinoma
- Bone
- Brain
- Lung
- Liver
Investigations to consider in a patient with ?RCC
- Bloods - FBC, ESR, U&Es, LFTs, coagulation screen, LDH, calcium, chP
- Renal US
- CT
- CT chest, abdo, pelvis and bone scan (if clinical evidence of metastasis)
Surgical options for management of an RCC
- Radical nephrectomy
- Partical nephrectomy
- Immunotherapy
Oncological option for management of an RCC
Tyrosine kinase inhibitors e.g. sunitinib, pazopanib
Risk factors for upper tract TCC
- Smoking
- Phenacetin ingestion
- Balkan nephropathy
- Lynch syndrome
- Male sex (3:1)
- Age
Clinical features of Upper tract TCC
- Visible haematuria
- Flank pain (‘clot colic’)
- Asymptomatic
Investigations to consider in a patient with suspected UTTCC
- CT urogram or renal US and IVP
- Cystoscopy +/- retrograde pyelogram
- Urine cytology
- Flexible ureteroenscopy + biopsy
- CT chest/abdo/pelvis for staging
Management of a patient with non-metastatic UTTCC with a normal contralateral kidney
- Radical nephro-ureterectomy with bladder cuff excision
Indications for percutaneous, segmental or Oureteroendoscopic resection or laser ablation +/- Mitomycin C in UTTCC
- Single functioning kidney
- Bilateral disease
- Unilateral low grade tumour <1cm
- Unfit for surgery