Patient is diagnosed with dacryocystitis, which is the inflammation of?

Dacryocystitis is the inflammation of the lacrimal sac, which is part of the tear drainage system located in the inner corner of the eye. The lacrimal sac is connected to the nasolacrimal duct, which drains tears into the nasal cavity. Inflammation in this area can cause pain, redness, and swelling near the inner corner of the eye.

ICD-10-CM, medical dictionaries