患者男,45岁。发现脐部肿块多年,偶流淡黄色液体。体检:脐下见一大小约3.2cm×3.5cm×4.0cm肿块,质软,有明显压痛,表面红肿、流脓。B超:下腹部膀胱上方探及长条状略低回声区,形态不规则,内部实质光点分布不均匀,与膀胱组织关系密切。CT平扫:下腹部正中线脐下方见一长条状下行略 Male patient, 45 years old. Umbilical tumor found for many years, even pale yellow liquid. Physical examination: see a size of about 3.2cm × 3.5cm × 4.0cm under the umbilical mass, soft, with significant tenderness, surface swelling, pus. B super: lower abdomen bladder exploration and strip slightly hypoechoic area, irregular shape, the internal distribution of the actual spot is not uniform, closely related with the bladder tissue. CT scan: lower abdomen under the navel, see a long strip down slightly