Abdominal Wall Actinomycosis Associated with Foreign Body Perforation.

Abdominal wall actinomycosis is a very rare infection caused by anaerobic Gram-positive bacteria Actinomyces. We present a case of a 72-year-old female with chronic pain located in the right hypochondriac region and anterior abdominal wall mass which had developed six months before. An ultrasonography (USG) and computed tomography (CT) scan of the abdomen were performed and showed an inflammatory change with a strong internal linear reflection in the right upper abdomen. The tumor was located inside the rectus abdominis muscle and connected with internal organs and subcutaneous tissue. The patient qualified for surgery. En block tumor excision was made with partial resection of the transverse colon. Postoperative study revealed fishbone-associated inflammatory actinomycosis tumor. The patient was successfully managed postoperatively with penicillin and discharged on the 11th day after the surgery.