We report an unusual case of PMP caused by mucinous adenocarcinoma arising from urachus in a 39 year-old man.

• 我们报告一个由脐尿管腺癌引起的腹腔假黏液瘤。临床上表现出一个位于肚脐下方，多腔室的囊状肿瘤，且腹腔内充满黏液状物质。