[A Case of Pancreatic Body and Tail Cancer Detected because of a Sister Mary Joseph's Nodule].

The patient is a 67-year-old female who visited a local clinic with a primary complaint of redness and swelling at the umbilicus. The patient was scheduled for surgical excision because of a suspected umbilical abscess caused by a remnant urachus. During this period, weight loss and elevated tumor marker levels were noted, and further investigation led to the diagnosis of pancreatic body and tail cancer with a Sister Mary Joseph's nodule. Systemic chemotherapy was administered, and initially, both the tumor size and tumor marker levels decreased. However, the tumor subsequently increased in size, and the patient died 7 months after treatment. When an umbilical mass is noted, the possibility of umbilical metastasis from visceral malignancies should be considered.