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CASE REPORT
Year : 2020  |  Volume : 10  |  Issue : 2  |  Page : 141-143

Navigation-assisted endoscopic surgery of lacrimal sac tumor


Department of Ophthalmology, China Medical University, Taichung, Taiwan

Correspondence Address:
Dr. Cheng-Hsien Chang
Department of Ophthalmology, China Medical University, Taichung
Taiwan
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/tjo.tjo_65_19

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Tumor of lacrimal sac invading into orbit has to be removed carefully to avoid injuring the eyeball, optic nerve, and extraocular muscles. Transnasal endoscopic-assisted tumor excision is a method to remove the tumor from the nasal cavity through the lacrimal sac to the orbit in one procedure. A 55-year-old female patient with thyroid carcinoma removed more than 10 years ago. She recently had a swollen submandibular lymph node enlargement, which was pathologically diagnosed as metastatic carcinoma. Follow-up investigation showed a tumor in the ipsilateral lacrimal sac with invasion into adjacent orbit and nasal cavity. The tumor was removed through image-guided surgery (IGS), navigation-assisted transnasal endoscopic-assisted excision. The tumor was removed as much as possible. The eyeball, extraocular muscles, and optic nerve were not injured in the surgery. Postoperative swelling was minimal with mild nasal hemorrhage. No ecchymosis and conjunctiva chemosis and eyelid swelling was noticed. Ocular motility was full without diplopia. Although exenteration and partial maxillectomy were suggested after pathological result showed a carcinoma of lacrimal sac, patient did not want these extensive surgery immediately. On patient request to reserve the eyeball function, navigation-assisted transnasal endoscopic excision is a safe and efficient method for the preliminary surgery. This case of orbital tumor excision using endoscope and IGS navigation system is the first case by Taiwan ophthalmologists.


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