<Case Reports> A case of abdominal wall abscess caused by fish bone strayed into umbilical hernia

[Abstract] A woman who was 70’s in age was hospitalized with a slow-growing abdominal mass for about one month. An abdominal CT scan showed 35 mm diameter abscess formation under the rectus abdominis muscle, and about 20 mm length high density linear shadow was identified within the abscess. Because she had mild abdominal tenderness, she was followed for a week. A week later, the abscess enlarged to 52 mm in size and an emergency laparotomy was performed. Intestinal perforation was not detected after removal of the fish bone, and abscess drainage was performed. She was discharged from the hospital on the 30th postoperative day without any postoperative complications. In cases of fish bone penetration with abdominal pain, it is important to determine treatment strategy according to abdominal symptoms and CT findings.