Specific Infections of the Genitourinary Tract
Beyond ordinary bacterial UTI lie the specific infections — organisms that cause distinctive, often chronic, disease with characteristic clues.
The big picture
Beyond ordinary bacterial UTI lie the "specific" infections — organisms that cause distinctive, often chronic, disease with characteristic clues. They are easy to miss because they don't behave like a routine E. coli cystitis, and two of them have a sting in the tail: genitourinary tuberculosis and urinary schistosomiasis both produce long-term damage and, in the case of schistosomiasis, bladder cancer. The skill here is pattern recognition — spotting the clue (sterile pyuria, a calcified tract, a beaded vas, the right travel history) that points away from common infection.
The framework: learn each specific infection by its organism, route, hallmark clue, and consequence — tuberculosis, schistosomiasis, filariasis, fungal (candidal), and actinomycosis.
Mechanism pathway
Tap any step to see why it happens.
Diagnostic algorithm
Each step answers one question. Tap to expand.
Board traps
Sterile pyuria → think tuberculosis (and a calcified tract strongly suggests it).
Urinary schistosomiasis (S. haematobium) causes squamous cell bladder cancer — a key long-term sequela.
Schistosomiasis serology shows past exposure, not active infection.
Only S. haematobium affects the urinary tract; S. mansoni/japonicum affect bowel and liver.
Candiduria is often colonisation — driven by catheter, diabetes, antibiotics, immunosuppression.
Actinomycosis can mimic malignancy — confirm by finding the organism.