RESUMEN
Background: Infected urachal cysts are rare clinical manifestations in older adults. A high level of suspicion is essential for the diagnosis of this condition. Objective: To describe the clinical features of infected urachal cysts, clues to the diagnosis, and the method of treatment. Patients: We treated a 68-year-old woman who presented with a midline suprapubic mass with pain and fever. Result: There were no post-operative complications. Pathological findings were consistent with an infected urachal cyst with a chronic abscess extending to the dome of the urinary bladder, without malignancy. There were severe acute and chronic abscesses in the omentum. Histological findings demonstrated vascularized granulation tissue with inflammatory cell infiltration beneath denuded urothelial lining. Conclusion: Complete excision of urachal cysts with a bladder cuff is recommended to avoid an uncommon development of carcinoma in unresected tissue, which has poor prognosis due to its late presentation and local invasion.