[Squamous cell carcinoma as a rare complication of hidradenitis suppurativa].

A 42-year-old Dutch woman with no previous relevant medical history presented with hidradenitis suppurativa in the left inguinal region. After surgical excision, pathological investigations confirmed a diagnosis of squamous cell carcinoma. Further investigations showed no signs of metastases and after 6 months of follow-up there were no signs of recurrence. Hidradenitis suppurativa is a common chronic skin condition, localised in the axillary, inguinal and perianal regions. Squamous cell carcinoma of the skin is a rare complication of hidradenitis suppurativa. It occurs in extra-axillary locations of the hidradenitis foci, and has a poor prognosis. Pathological examination of excised skin in patients with hidradenitis foci is recommended, especially in the case of extra-axillary lesions.