Fournier's gangrene with Streptococcus Anginosus in the setting of hidrandenitis suppurativa perineal abscess: A case report.

Fournier's gangrene is a rare but life-threatening form of necrotizing soft tissue infection involving the perineal, genital, or perianal region, commonly caused by a mix of aerobic and anaerobic organisms. Initially discovered in dental abscesses, Streptococcus anginosus have been increasingly reported in pyogenic and systemic infections with abscess formation. We present a rare case of perineal abscess that developed into Fournier's gangrene in which the causative pathogen isolated was S. anginosus. A 58-year-old male with uncontrolled type 2 diabetes, hypertension and hidradenitis suppurativa of the groin, presented with worsening testicular pain. He was found to have a necrotizing soft tissue infection of the perineum, consistent with Fournier's gangrene. He was successfully treated with multiple surgical debridement and broad-spectrum intravenous antibiotics. He was transitioned to oral antibiotics before transferring to a tertiary care facility for reconstruction. The setting of uncontrolled diabetes and hidradenitis suppurativa may be the likely etiology for this peculiar case of Fournier's gangrene secondary to S. anginosus. Compromised tissue integrity and impaired local immune defenses from these etiologies predisposes to the development of Fournier's gangrene. Historically, these abscesses typically resolve after intravenous antibiotics and incision and drainage. However, the abscess in this case did not resolve but rather progressed to Fournier's gangrene. Perineal abscesses that grow S. anginosus should raise a high index of suspicion for worse outcomes. In conclusion, we recommend a multidisciplinary approach and rapid diagnosis for the management of S. anginosus in the setting of a perineal abscess, with early aggressive surgical debridement and broad-spectrum antibiotics.

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