A 2 year old child is brought to the hospital with a compressible swelling at the root of nose, most likely diagnosis is:

Lacrimal sac cyst occurs as a compressible swelling near the medial canthus and not root of nose. Ethmoid cyst (mucocele) presents as a swelling at the medial quadrant of orbit pushing the orbit forwards and laterally. AV malformation is a congenital abnormal connection between aeries and veins, bypassing the capillary system.These are largely found in internal organs and is rare at this site.