A giant complex pelvic cystic lesion misdiagnosed as a seminal vesicle tumor: A rare case report of prostatic cyst

Giant prostatic cysts are a rare condition. This case report describes a 53-year-old male patient who presented with acute urinary retention. Imaging studies revealed a giant cystic mass in the pelvic cavity, with septa and nodules, adjacent to the seminal vesicles and compressing the prostate and bladder. Preoperatively, we considered it to be a seminal vesicle tumour and completely resected the cyst and right seminal vesicle via laparoscopic surgery. However, postoperative histological examination confirmed it to be a benign prostatic cyst. This study provides new clinical reference for preoperative decision-making in cases of giant prostatic cyst.