6. Needle-free electronically-controlled jet injector treatment with bleomycin and lidocaine is effective and welltolerated in patients with recalcitrant keloids. 154 Figure 3 Clinical effectiveness assessed with Patient and Observer Scar Assessment Scale (POSAS) at baseline and after three consecutive treatments with bleomycin and lidocaine using an EPI. Based on the total POSAS scale, patients and physisians reported a significant improvement in the keloids at followup. EPI, electronically-controlled pneumatic jet-injector.
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