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AJNR - American Journal of Neuroradiology

Published ahead of print on October 5, 2007
doi: 10.3174/ajnr.A0709

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Imaging Characteristics of Dacryocystocele Diagnosed after Surgery for Sinonasal Cancer

J.M. Debnam^a, B. Esmaeli^b and L.E. Ginsberg^a

^a Department of Radiology, The University of Texas M.D. Anderson Cancer Center, Houston, Tex
^b Section of Ophthalmology, The University of Texas M.D. Anderson Cancer Center, Houston, Tex

View larger version (48K): [in this window] [in a new window]   Fig 1. A 52-year-old man, status post right maxillectomy for resection of soft palate adenoid cystic carcinoma with a right dacryocystocele. A, Coronal CT. Cystic, fluid-filled structure within the anteromedial aspect of the right orbit, adjacent to the nasolacrimal duct (arrows). B, Axial T1 postgadolinium. Thin peripheral enhancement around the dacryocystocele (arrow). C, Axial T2. Appearance of a dacryocystocele as a cystic, fluid-filled structure within the anteromedial aspect of the right orbit (arrow).

View larger version (62K): [in this window] [in a new window]   Fig 2. A 52-year-old man, status post left maxillectomy and ethmoidectomy for resection of a radiation-induced osteosarcoma of the maxilla, before and after surgery. A, Axial CT. Dacryocystocele in the left medial canthal region (arrow). B, Axial CT. Resolution of the dacryocystocele (arrow) after dacryocystorhinostomy and placement of a silicone tube.

View larger version (28K): [in this window] [in a new window]   Fig 3. A, Anatomy of the nasolacrimal drainage apparatus. Note the position of the nasolacrimal duct. B, Illustration of a dacryocystocele with cystic dilation of the lacrimal sac.