RT Journal A1 Abramson AL, Waner M, Brandsma J T1 THe clinical treatment of laryngeal papillomas with hematoporphyrin therapy JF Archives of Otolaryngology–Head & Neck Surgery JO Archives of Otolaryngology–Head & Neck Surgery YR 1988 FD July 1 VO 114 IS 7 SP 795 OP 800 DO 10.1001/archotol.1988.01860190099033 UL http://dx.doi.org/10.1001/archotol.1988.01860190099033 AB • Photodynamic activation of hematoporphyrin derivative was originally developed for the treatment of cancer. This article demonstrates that it may also be an effective therapy for papillomavirus infections of the larynx. Seventy-two hours prior to surgery, hematoporphyrin derivative (6 mg/kg) was given intravenously to two patients with the adultonset form of this disease. Three days later, endoscopic surgery was performed and 32 J cm2 was delivered to the endolarynx via an argon pump dye laser with a red light output of 630 nm. No significant complications such as swelling or hemorrhage occurred. At follow-up (13 months) there has been no recurrence of the laryngeal papilloma in either of these patients. The surgical technique, molecular biology, and clinical implications of this work to control laryngeal papillomatosis are described.(Arch Otolaryngol Head Neck Surg 1988;114:795-800)