Background
Nasopalatine duct cysts (NPDCs) are developmental, epithelial, nonneoplastic cysts that are considered to be the most common (32.8-73.2%) of the nonodontogenic cysts.
Nasopalatine duct cyst is one of many pathologic processes that may occur within the jawbones, but it is unique in that it develops in only a single location, which is the midline anterior maxilla. Nasopalatine duct cysts usually present as unilateral pathology, but they may also occur bilaterally (approximately 0.25% of all cases).