26 January 2026
: Case report 
A 34-Year-Old Man With a Traumatic Penetrating Injury of the Buttock and Occult Retained Foreign Body Resulting in a High Anal Fistula Managed by Trans-Sphincteric Surgery
Unusual clinical course, Challenging differential diagnosis, Diagnostic / therapeutic accidents, Management of emergency care
Xianbao Liu ABCDEFG 1*, Weigan Lin CEF 2, Minhui Ke A 1, Xianmin Gao A 1, Ruoxuan Shi BCD 1DOI: 10.12659/AJCR.950448
Am J Case Rep 2026; 27:e950448
Figure 2 Clinical photograph of the patient’s perianal region (taken at discharge from the second medical center, June 2023). After 3 weeks of perianal abscess incision and drainage and anti-infection treatment, the perianal swelling and purulent discharge were temporarily relieved, and the surgical wound showed partial healing. However, the underlying occult foreign body remained, which later led to the recurrence of symptoms and the formation of a high anal fistula.