Primary urachal leiomyosarcoma: a case report and literature review of clinical, pathological, and medical imaging features

Background Urachal tumors are exceedingly rare, and adenocarcinoma is the most common malignant urachal neoplasm. Here, an especially rare patient of primary leiomyosarcoma from our hospital was reported, only five patients have been reported thus far since 1981. Case description A 24-year-old man admitted due to urinary tract symptoms. Both urogenital ultrasonography contrast-enhanced computed tomography showed a mass at dome bladder. Laparoscopic surgical resection performed, histopathologic examination confirmed diagnosis leiomyosarcoma. No recurrence noted after one half years. Conclusions Because located in extraperitoneal space Retzius may manifest with nonspecific abdominal or symptoms, early definitive preoperative challenging. Partial cystectomy complete excision urachus recommended. few recorded, clinical outcomes risks difficult assess.