5.05 Urology - The Genital Tract Flashcards
What is epididymitis?
Inflammation of the epididymis, usually caused by local extension of infection from the lower urinary tract.
Give the most common causative organisms for epididymitis, for males aged:
a) <35 years
b) >35 years
a) sexual transmission (ie. Neisseria gonorrhoea, Chlamydia trachomatis)
b) enteric organisms (ie. Escherichia coli, Pseudomonas aeruginosa)
What is mumps orchitis?
A common complication of mumps viral infection in post-pubertal boys is mumps orchitis.
What are the risk factors for epididymitis?
Risk factors for non-enteric causes:
- MSM
- multiple sexual partners
- known contact of gonorrhoea
Risk factors for enteric causes:
- catheterisation
- bladder outlet obstruction (e.g. BPH)
- immunocompromised
What are the clinical features of epididymitis?
- unilateral scrotal pain
- swelling
- fever / rigors
OE affected side is red and swollen, with epididymis tender on palpation. May be associated hydrocoele.
Cremasteric reflex intact; Phren’s sign +ve (pain relieved by elevating testis).
What are the differentials for epididymitis?
- testicular torsion
- testicular trauma
- hydrocoele
- testicular tumour
How should a patient presenting with epididymitis be investigated?
- urine dipstick
- NAAT to assess for N. gonorrhoea + further STI screening
- routine bloods
- blood cultures if systemic infection
- ultrasound imaging
How should epididymitis be managed?
- antibiotic therapy
- sufficient analgesia
- abstain from sexual activity
- counsel on use of barrier contraception
What is urethritis?
Inflammation of the urethra, most commonly due to infection.
Can be classified as either gonococcal or non-gonococcal urethritis.
What is the cause of
a) gonococcal urethritis
b) non-gonococcal urethritis
a) Neisseria gonorrhoea
b) Chlamydia trachomatis
What are the risk factors for urethritis?
- age <25years
- MSM
- previous STI
- new sexual partner
- multiple sexual partners
What are the clinical features of urethritis?
- dysuria
- penile irritation
- discharge from urethral meatus
What are the common complications of urethritis?
- epididymitis
- reactive arthritis
What is reactive arthritis?
A sterile inflammatory arthritis caused by distant infection, producing an autoimmune response at certain joints.
Most commonly caused by Chlamydia trachomatis, Chlamydia pneumoniae.
Presents as an oligoarthritis, affecting the lower limbs, alongside other extra-articular manifestations:
- conjunctivitis
- prostatitis
- painless oral ulcers
- malaise
- fatigue
How should urethritis be investigated?
- MSU
- STI screening
- NAAT of first-void urine for N. gonorrhoea, C. trachomatis
- urethral gram stain under microscopy
Describe the gram stain findings in gonoccocal urethritis.
Most commonly caused by Neisseria gonorrhoea.
Therefore Gram negative diplococci
Which anatomical deformity increases the risk of testicular torsion?
Bell clapper deformity
The testis lacks a normal attachment to the tunica vaginalis and is therefore more mobile, increasing the likelihood of it twisting on the spermatic cord.
What are the clinical features of testicular torsion?
- sudden onset
- severe unilateral testicular pain
- n+v
- referred abdominal pain
OE testis in a high position with a horizonal lie. Cremasteric reflex is absent and Phren’s test -ve (pain not relieved when testis raised).
SURGICAL EMERGENCY
What pathology does the ‘blue dot’ sign classically suggest?
Torsion of the hydratid of Morgagni.
The hydatid of Morgagni is a remnant of the Mullerian duct, which can become torted and present similarly to testicular torsion.
Torsion of these structures is more common in younger males, and the scrotum is usually less erythematous with a normal lie of the testes.
The blue dot sign may be present in the upper half of the hemiscrotum, which is the visible infarcted hydratid.
