Background and method: This article describes and discusses a prospective randomized study with gentamicin sulfate in the surgical treatment of hidradenitis suppurativa. The purpose of the study was to investigate whether enclosure of antibiotics after primary excision and closure reduces the number of postoperative infections. Therefore, the hidradenitis lesions were excised and closed with or without enclosure of a gentamicin-collagen sponge (GC).
Results: A total of 200 patients were included in the study. Seventy-six patients underwent surgical excision with primary closure (PC), and 124 PCs over a GC. After 1 week there were significantly fewer complications (infection, dehiscence, etc.) in the GC group, 35% versus 52%; after 3 months the complications in both groups were comparable, 12% versus 19% (Table 2). The mean period of wound healing was 21 days in the first group and 24 days in the second group. The recurrence rate after 3 months was comparable in both groups, 40% versus 42%.
Conclusion: This study shows that enclosure of gentamicin after primary excision of hidradenitis suppurativa reduces the number of complications 1 week postoperatively. Furthermore, in 65% of the patients treated with gentamicin, the wound was completely healed within 2 months. There is no effect on the long term recurrence rate, as expected.