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Year : 2008  |  Volume : 56  |  Issue : 5  |  Page : 413-416

An unusual variation in the anatomy of the uncinate process in external dacryocystorhinostomy

Icare Hospital, E 3A Sector 26, Noida - 201 301, UP, India

Correspondence Address:
Anjali Mehta
Oculoplastics Department, ICare Hospital, E - 3A, Sector 26, Noida - 201 301, UP
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0301-4738.42420

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Variations in the bony components of the nose are often encountered. One such variation was found in a 49-year-old male who had undergone conventional external dacryocystorhinostomy for adult onset nasolacrimal duct blockage. Intraoperatively, a thick bar of bone was seen beneath and parallel to the lacrimal sac fossa after a complete osteotomy had been made. Another osteotomy had to be fashioned in this bone to reach the nasal cavity. Postoperative 3D computed tomographic scan revealed the bone to be an anatomical variation of the uncinate process of the ethmoidal bone which was rather anteriorly placed, much thicker than usual, and attached to the nasal roof. The uncinate process is thin, curved and its anterior edge may frequently overlap some part of the lacrimal fossa. However, to our knowledge, the presence of such a large and thick uncinate process necessitating an additional large osteotomy has not been reported.

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