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Ductal carcinoma arising from syringocystadenoma papilliferum in the external auditory canal.

A 49-year-old man presented with an itchy left ear canal, foreign body sensation, otorrhea, and otalgia for 6 months. An exophytic lesion was identified at the bony-cartilaginous junction of the external auditory canal. Computed tomography demonstrated a 2-mm bony defect along the posterior wall of the external canal. Lateral temporal bone resection with superficial parotidectomy was performed with complete tumor extirpation. The patient recovered uneventfully and is without evidence of recurrence 20 months after resection. Treatment of SCAP and its malignant variants comprises wide surgical resection, which is uniformly curative.