Perianal mass: gout as the etiology (with a case report).

Perianal gouty tophi represent a common condition manifesting in a rare site. Due to its rarity in clinical practice, this condition is highly prone to misdiagnosis and inappropriate treatment. This paper presents a detailed report of a middle-aged male patient who was misdiagnosed with perianal abscess. We performed a resection of the perianal mass and debridement and drainage under spinal anesthesia, and the subsequent histopathological examination clearly confirmed the diagnosis of perianal tophi. Conclusion: the perianal masses can also be caused by gout. Although the perianal area is not a common site for tophus formation, in such cases, it is difficult to clearly determine that gout is the cause through common imaging methods such as magnetic resonance imaging (MRI) or ultrasound.