Fir tree  appearance of bladder is seen in
Neurogenic bladder is bladder dysfunction (flaccid or spastic) caused by neurologic damage. Symptoms can include overflow incontinence, frequency, urgency, urge incontinence, and retention.
Risk of serious complications (eg, recurrent infection, vesicoureteral reflux, autonomic dysreflexia) is high.
Schistosomiasis
Neurogenic bladder
Tuberculosis
Pelvic abscess