Urachal Liposarcoma: A Radiologic Case Report and Literature Review of Malignant Urachal Neoplasms

Abstract

Malignant urachal neoplasms account for less than 1% of all bladder cancers. An aggressive disease with a poor prognosis, adenocarcinoma is the commonest histologic subtype, the majority of which are mucin producing. We present the first known case of urachal dedifferentiated liposarcoma in a 59-year-old male, who presented with a hard and painful suprapubic mass without significant urinary symptoms. We showcase the confounding CT and MRI findings of this exceedingly rare disease at initial presentation and the CT appearance of disease recurrence at surveillance in our patient. We aim to contribute to the sparse literature on urachal liposarcoma, highlighting the diagnostic intricacies of this remote disease entity alongside its potential prognostic implications.