Deroofing followed by thorough sinus tract excision: a modified surgical approach for hidradenitis suppurativa.

Background And Objectives: Deroofing has proven to be an effective method to treat mild to moderate forms of hidradenitis suppurativa (HS). The basic procedure includes removal of the sinus roof, followed by secondary intention healing, while fibrotic tissue usually stays in situ. We have tried to establish a modified method of deroofing in which meticulous removal of the fibrotic tissue results in a low recurrence rate in moderate to severe HS patients.

Reactivity of Langerhans cells after application of different chemicals--an ultrastructural analysis.

The goal of this study was to investigate changes in epidermal Langerhans cells after application of different chemicals (acetone, 60% alcohol, 5% nickel sulphate, iodisole, and 0.1% 2,4-dinitrochlorobenzene) on the skin of volunteers. The skin of eight volunteers was treated with acetone, 60% alcohol, iodisol, 5% nickel sulphate, and 0.

Electron microscopic demonstration of the penetration of liposomes through skin.

To verify the penetration of liposomes through skin, we have used liposomes with encapsulated protein G-gold conjugate in a gel vehicle. Skin samples were examined 2, 4, 24, 48, and 72 h after liposome application. Our findings show that the penetration of liposomes through skin depends mainly on their size.