Common canalicular obstruction
This 75 year-old woman complained of left epiphora. Probing of the lower canaliculus revealed a soft stop and syringing caused fluid regurgitation through the upper punctum. The DCG showed an almost complete obstruction of the common canaliculus with regurgitation of the dye. Some dye however got into the sac as in the second picture with a faint outline of the sac.

DCG shows obstruction of the common 

A later frame shows regurgitation of the 
dye with faint outline of the lacrimal sac.
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