Nasolacrimal Duct Obstruction and Lacrimal Surgery in Cancer Patients
Nasolacrimal duct obstruction is often seen in patients with cancer. Iatrogenic causes such as surgery, radiation therapy, and chemotherapy are among the most common causes. Primary lacrimal drainage tumors are less common causes. The evaluation of patients with suspected nasolacrimal duct obstruction should include a thorough history and a comprehensive ophthalmic examination, including probing and irrigation of the lacrimal drainage apparatus and a Schirmer’s test. Imaging studies may also be necessary. Treatment depends on the degree and location of the obstruction and may consist of probing and irrigation alone; balloon dilation; intubation of the drainage system with silicone stents; or dacryocystorhinostomy, usually with placement of silicone stents to maintain duct patency during healing.
KeywordsNasolacrimal Duct Nasolacrimal Duct Obstruction Sodium Iodide Symporter Pyrex Glass Tube Lacrimal Drainage System