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FIG 2. Right postlacrimal sac stenosis and healthy left lacrimal system.
a, Axial CTD scan obtained at the level of the lacrimal sac. Dilation of the right lacrimal sac (white arrow) and absence of contrast medium inside the right nasolacrimal duct (arrowhead) can be appreciated. For comparison, see the healthy drainage of the contrast medium on the left side (thin arrows).
b, Axial CTD scan obtained at the level of the nasolacrimal duct.
c, Right postlacrimal sac stenosis and healthy left lacrimal system. Axial MRDt images (600/30/1) obtained after the injection of iodinate and gadopentetate contrast media at the level of the lacrimal sac. Dilation of the lacrimal sac (white arrow) and absence of contrast media below the lacrimal sac level on the right side (arrowhead) are equally depicted on MRDt images. The healthy contrast media drainage on the left side is also appreciated (thin arrows).
d, Axial MRDt images (600/30/1) obtained after the injection of iodinate and gadopentetate contrast media at the level of the nasolacrimal duct.
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