Nasolabial cyst is thought to arise from:

  # Nasolabial cyst is thought to arise from:

A. Remnant of cell rest of Serres

B. Remnant of cell rest of Malassez

C. Remnant of cell rest of embryonic lacrimal duct

D. Maxillary sinus lining epithelium

The correct answer is C. Remnant of cell rest of embryonic lacrimal duct.

Nasolabial cyst is a very uncommon cyst which forms outside the bone in the soft tissues, deep to the nasolabial fold. It probably arises from the lower end of the nasolacrimal duct and is occasionally

bilateral. It presents over a wide age range, mostly in middle-aged adults, and much more commonly in females. The cysts form soft tissue swellings in the upper lip, distort the nostril and cause pressure resorption of the anterior maxilla if large.