Genitourinary: Part 4 Flashcards
Is ARPKD more common than ADPKD
It is RARER
What causes ARPKD
PKHD1 mutation on q arm of chromosome 6
Clinical presentation of ARPKD
- Presents in infancy
- Alongside congenital hepatic fibrosis
- Enlarged polycystic kidneys
- 30% develop kidney failure
Differential diagnosis of ARPKD
- ADPKD
- Multicystic dysplasia
- Hydronephrosis
- Renal vein thrombosis
Diagnosis of ARPKD
- ULTRASOUND
- CT and MRI
- Genetic testing
How is ARPKD treated
- Genetic counselling
- Laparoscopic removal of cysts to help with pain relief
- RAMIPRIL
- Treat stones an give analgesia
- Renal replacement therapy for ESRF
How do we diagnose non-malignant scrotal disease
If we can prove testicular lump is NOT cancer:
- Can you get above it
- Can you separate it from the testis
- Cystic or solid
What is the scrotal disease if you cannot get above the lump
- Inguinoscrotal hernia or proximally extending hydrocele
What is the scrotal disease if separate and cystic
Epididymal cyst
What is the scrotal disease if separate and solid
Epididymitis or varicocele
What is the scrotal disease if testicular and cystic
Hydrocele
What is the scortal disease if testicular and solid
Tumour
Haematocele
Characteristics of an epididymal cyst
- Smooth
- Extratesticular
- Spherical cyst in head of epididymis
- Contains clear and milky fluid
Clinical presentation of epididymal cyst
- Many an bilateral
- Small cysts = asymptomatic
- Well defined and transluminate since fluid-filled
- Testis is palpable quite separately from cyst (unlike hydrocele where testes is palpable within fluid filled swelling)
Differential diagnosis of epididymal cyst
- Spermatocele
- Hydrocele - collections of fluid surrounding entire testicles
- Varicocele - dilated veins that increases with abdo pressure
What is spermatocele
- Fluid-filled sperm filled cyst in epididymis
2. No way to differentiate between cyst of epididymis and spermatocele
How can we differentiate spermatocele from epididymal cyst
Sperms are present in milky fluid aspiration
How is epididymal cyst diagnosed
ULTRASOUND
How is epididymal cyst treated
- Not needed
2. Surgical excision if painful
What is hydrocele
- Abnormal collection of fluid within the tunica vaginalis
Where are primary hydroceles found
Younger men
What is primary hydrocele associated with
Patent processus vaginalis which resolves during 1st year of life
In what individuals are secondary hydroceles found
- Older boys and men
What diseases cause secondary hydrocele
- Testis tumour
- Trauma
- Infection
- TB
- Testicular torsion
- Generalised oedema
Pathophysiology of simple hydrocele
Overproduction of fluid in tunica vaginalis
Pathophysiology of communicating hydrocele
Processus vaginalis fails to close , allowing peritoneal fluid to communicate freely with scrotal portion
Clinical presentation of hydrocele
- Scrotal enlargement with non-tender,smooth and cystic swelling
- No pain unless infection present
3, Testis palpable but not in large hydrocele - Lies anterior to and below testis and will transluminate
Differential diagnosis of hydrocele
Tetsicular torsion and strangulated hernias
Diagnosis of hydrocele
Ultrasound
Serum alpha-fetoprotein and human chorionic gonadopreotein excludes malignant teratomas or germ cell tumours
Treatment of hydrocele
Resolves on its own by 2 years of age
2. Therapeutic aspiration or surgical removal
What is a varicocele
- Abnormal dilatation of testicular veins in the pampiniform venomous plexus = venous reflux
What side of the testis is usually effected more commonly in varicoceles
Left
In what individuals are varicoceles common in
Boys over 10 (after puberty)
Associated with sub-fertility
Where is a varicocele palpated
Left tetsicular vein enters renal vein
Pathophysiology of a varicocele (what causes it)
Increased reflux from compression of renal vein
Lack of effective valves between testicular and renal veins
Clinical presentation of varicocele
- Distended scrotal blood vessels that feel like a bag of worms
- Patients have dull ache or scrotal heaviness
- Scrotum hangs lower on the side of varicocele
Differential diagnosis of varicocele
- Secondary to other pathological processes blocking testicular vein (kidney tumours or retroperitoneal tumours
Diagnosis of a varicocele
- Venography
2. Colour doppler ultrasound
Treatment of a varicocele
Surgery if there is pain, infertility or testicular atrophy
Define testicular torsion
Torsion of spermatic cord leads to occlusion of tetsicular blood vessels - ischaemia and infarct)
What cells are most susceptible to ischaemia
GERM CELLS
When does surgery need to be performed to save testis after testicular torsion
Less than 6 hours after torsion happens
More than 24 hours after - 0% chance of keeping it
What side of the tetsis is most commonly effected in a torsion
LEFT
What is belt-clapper deformity
Where testis is not fixed to scrotum completely - free movement and twisting
Risk factors for testicular torsion
Genetic
Clinical Presentation for testicular torsion
- Presenting with abdo pain - testes should be checked
- Sudden onset of pain in one testis - makes walking uncomfortable
- Pain comes on during sport or physical activity
- Pain in abdo, nausea and vomiting are common
- Inflammation of one testis - very tender, hot and swollen
- Testis may lie high or transversely
WITH INTERMITTENT TORSION - pain may have passed on presentation - but was severe and lie is horizontal then prophylactic fixing may be wise
Differential diagnosis of testicular torsion
- EPIDIDYMO-ORCHITIS: But usually patient tends to be older and there may be symptoms of UTI and more gradual onset of pain
- Tumour, trauma and an acute hydrocele
- Torsion of testicular or epididymal appendage (remnant of mullein duct)
- Idiopathic scrotal oedema
When does torsion of testicular epididymal appendage occur
- Usually occurs in boys between 7 and 12 and causes less pain
Clinical presentation of torsion of testicular epididymal appendage
Small blue nodule under scrotum
What causes torsion of testicular or epididymal appendage
Surge in gonadotropins that single onset of puberty
When does idiopathic scrotal oedema occur
Between 2 to 10 years
How is idiopathic scrotal oedema differentiated from testicular epididymal appendage
Absence of pain and tenderness
How is tetsicular torsion diagnosed
- DOPPLER ULTRASOUND - lack of blood flow to testis)
- Urinalysis - exclude infection and epididymis
- DO NOT DELAY SURGICAL EXPLORATION
How is tetsicular torsion treated
Surgery
2. Orchidectomy (removal of tetsis) and bilateral fixation
Define BPE
Benign prostatic enlargement - CLINCIAL DIAGNOSIS
Define BPH
Benign prostatic hyperplasia - HISTOLOGICAL DIAGNOSIS
Define BOO
Bladder outflow obstruction- URODYNAMIC DIAGNOSIS
Define hydronephrosis
Dilatation of renal pelvis of the kidney - lead stop damage
Define obstructive uropathy
Functional and anatomical obstruction of urine flow at any level of the urinary tract
Define supravesical obstruction
Above bladder
Define infravesical obstruction
Below bladder
Normal function of the LUT
Convert continuous process of excretion to an intermittent process of elimination
Store urine insensibly
Void urine when convenient
Role of detrusor muscles
Relax during storage
Contracts when voiding
Parasympathetic cholingeric control - S3,4,5
Role of distal sphincter
- Contracts when storage
- Relaxes when voiding
- SYMPATHETIC CONTAL - T10,L1,L2
Four ways we can classify urine storage symptoms
- Urgency
- Nocturne (>30% volume added)
- Frequency
- Overlfow incontinence
7 ways we can classify urinary voiding issues
- Poor intermittent stream
- hesitancy
- Incomplete emptying
- Post-micturition dribbling
- Straining
- Haematuria red flag
- Dysuria red flag
What is PSA
Glycoprotein expressed by normal and neoplastic prostate tissue
Where is pSA produced
Prostate in semen
Is pSA present in blood
Yes
When is PSA raised
- BPH
- Prostate cancer
- Perianal trauma from surgery
- BMI > 25
- Taller men
- Prostatitis
- Black africans
- Ejaculation
- UTI s
What PSa level confers risk of LUTS progression
Greater than 1.4 ng/ml
What flow rate suggests bladder outflow obstruction due to BPH
Max flow rate less than 10
When do we look at max flow rate
When more than 150ml has been voided
What is the frequency volume chart
Measures volume voided and time over MINIMUM 3 days
Calculates whether polyuric or nocturic
Define acute urinary retention
Sudden onset of painful inability to pass urine with over 500ml in bladder
Palpable
Causes of acute urinary retention
1. Prostatic obstruction 2> urethral strictures 3. Anticholinergics 4. Alcohol 5. Constipation 6. Post-op 7. Infection 8. Neurological (spinal compression - cauda equina syndrome)
How is acute urinary retention examined
- Abdo, protstate (DRE) and perineal sensation to check for caudal equine syndrome
Diagnostics for urinary retention
Normal renal biochemistry
- Renal ULTRASOUND
- PSA test
Treatment for urinary retention
- Catheter
- TAMULOSIN (alpha-1 blocker) - relaxes smooth muscle in bladder neck
- 5-alpha reductase inhibitor - FINASTERIDE which reduces testosterone conversion to dihydrotestosterone = reduction in prostate size
Consequence of chronic urine retention
Increased risk of infection
2
When is chronic urine retention low pressure
Detrusor failure
When is chronic urine retention high pressure
Interactive obstructive uropathy
What causes chronic urine retention
- Prostatic enlargement due to BPH
- Pelvic malignancy or rectal surgery
- Diabetes
Clinical presentation of chronic urine retention
- Overflow incontinence - leaking urine during the day/wetting bed
- Loss of appetite, constipation, distended abdomen, UTI
How to manage chronic urine retention
Pain, urinary infection or renal impairment
What kind of urinary tract obstructions are there (4)
- Partial
- Complete
- Unilateral
- Bilateral
Luminal causes of urinary tract obstruction
- Stones
- Blood
- Clot
- Sloughed papilla
- Tumour
Mural causes of urinary tract obstruction
- Congenital or acquired stricture, neuromuscular dysfunction or schistomiasis
Extra-mural causes of urinary tract obstruction
- Abdo or pelvis mass/tmour, retroperitoneal fibrosis, BPH, prostate cancer
- Pregnancy
- Inflammation (peritonitis or diverticulitis)
Clinical presentation of acute upper tract obstruction
Loin pain radiating to groin
Clinical presentation of acute lower tract obstruction
Flank pain, renal failure, infection and polyuria as urinary conc is lower
Clinical presentation of acute lower tract obstruction
Suprapubic pain, bladder outflow obstruction
Distended, palpable bladder
Clinical presentation of chronic lower tract obstruction
- Urinary frequency, hesitancy, poor stream, terminal dribbling and overflow incontinence
- Distended, palpable bladder (+/- large prostate on rectal exam)
- Complications are UTI and urinary retention
Diagnostics of urinary obstructions
- FBC
- Mid-stream urinary sample
- ULTRAOSUND
FBC results for urinary obstruction
U and Es for creatinine (raised
What would ultrasound show in urinary obstruction
Hydronephrosis - arrange for CT after
Treatment for upper tract obstruction
- Nephrostomy
- Alpha-1 antagonist
- 5-alpha reductase inhibitor
What is a nephrostomy
Artificial opening created between kidney and skin allows for urinary diversion directly from upper tract
Treatment for lower tract obstruction
- Urethral catheter
- Suprapubic catheter
- TURP (Transurethral resection of prostate)
Pros of suprapubic catheter
Less risk of UTI and urethral damage
less likely to be colonised by bacteria
Cons of suprapubic catheter
- Urethral erosion image to urethral sphincter
- Small risk of bowel injury during insertion
- Requires general anaesthetic