• Ho-Goon Kim, Ho-Kyun Lee, and Eunkyu Park.
• Department of General Surgery, Chonnam National University Medical School, 160, Baekseo-ro, Dong-gu, Gwangju 61469, Republic of Korea.
• Medicina (Kaunas). 2023 Aug 23; 59 (9).

AbstractActinomycosis is a rare, chronic, suppurative, and granulomatous bacterial disease. The Actinomyces species exist as normal flora in the oropharynx, gastrointestinal tract, and the female genital tract. They are incapable of penetrating the normal mucous membranes and become pathogenic only when this barrier has been destroyed by trauma, surgery, immunosuppression, or after viscus perforation. We report the first case of an actinomycotic abscess after laparoscopic sleeve gastrectomy. A 29-year-old man underwent a laparoscopic sleeve gastrectomy with no intra-operative complications. On postoperative day 3, the patient had a fever with elevated inflammatory markers. Abdominal computerized tomography (CT) with oral water-soluble contrast media showed no extra-luminal leakage and no fluid collection adjacent to the resected stomach, other than the fluid collection in the right subhepatic space. Percutaneous drainage was attempted, but the procedure failed due to the patient's thick abdominal wall. After two weeks of weight loss of about 12 kg, percutaneous drainage was successfully performed, and A. odontolyticus was identified through pus culture. After effective abscess drainage and high-dose antibiotics, the patient's symptoms improved and the abscess pocket disappeared. We reported Actinomyces infection after gastric sleeve surgery. In the case of abscess formation after gastric sleeve surgery caused by actinomycete infection, antibiotic treatment and percutaneous drainage are effective together.

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