The pitfall of dacryostenosis.

We examined a 65-year-old woman with complaints of epiphora, which was diagnosed as due to dacryostenosis. After she had undergone dacryocystorhinostomy for this presumed condition, we discovered a large mass protruding through the incision. A biopsy showed anaplastic carcinoma, and a CT scan revealed that the right-side sinuses were filled with tumor. We conclude that the possibility of paranasal sinus tumors should at least be considered before initiating treatment for complaints of epiphora in elderly patients.