Respiratory papilloma is a rare lesion that arises in the larynx, trachea and bronchus.We describe a patient with laryngeal papilloma that spread to the trachea and whichwas effectively treated by Nd-YAG laser. Two years after the initial treatments of thelaryngeal and tracheal papillomas, a recurrent lesion (solitary papilloma) was observedon the membranous portion of the trachea. We examined the recurrent lesion by bronchoscopyincluding bronchoscopic ultrasound (US), helical computed tomography (CT)and tracheal biopsies. Respiratory papillomatosis sometimes shows either malignanttransformation or invasion to tracheal wall without displaying cytohistological atypia.Therefore, we concluded that bronchoscopic US and helical CT were useful for decidingon therapeutic strategy in cases of recurrence of tracheal papilloma.
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