Urachal abscess and infected bladder diverticulum

Urachal abscess is an uncommon condition with protean features and often presents a diagnostic challenge to clinicians. This case report describes a 41-year-old woman with severe multiple sclerosis who was referred to a gynaecological oncology service with the presumed diagnosis of advanced ovarian cancer. A diagnosis of urachal abscess and infected bladder diverticulum was made by a combination of imaging modalities and a percutaneous biopsy. It is important to be aware of this entity, as the presentation varies widely and when diagnosed early the condition may be treated appropriately by relatively minor surgical intervention.