RESUMO
Objective To decrease the error and missed diagnosis of xanthogranulomatous cystitis(XC) .Methods Combined with laboratory and imaging examnation ,we considered the diagnosis of urachal carcinoma complicated by urinary track infection . Anti-infection treatment before surgery ,we removaled of the pathological tissues ,and the final diagnosis was XC .Results The clin-ical symptoms of XC was not typical ,and this case was similar to that of urachal carcinoma .Cystoscope and imaging examination had no specificity .There were not frequent micturition ,the the urgency of urination and low back pain of patiut of the patient by one year follow-up .Conclusion XC is very rarely ,and it is hard to differentiate from other bladder diseases ,tumor of the urachus .The final diagnosis may still depends on histopathological examination .