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Clinical Problem Solving: Radiology
October 2001

Diagnosis Quiz Case

Author Affiliations
 

R. NICKBRYANMDS. JAMESZINREICHMD

Arch Otolaryngol Head Neck Surg. 2001;127(10):1284-1285. doi:

The nasopalatine duct cyst (incisive canal cyst, median anterior maxillary cyst) is the most common cyst of nonodontogenic origin in the maxilla.1 Nasopalatine cysts may form either within the incisive canals located in the palatine bone just behind the alveolar process of the central incisors or within the soft tissue of the palate at the opening of the incisive canal (cyst of the incisive papilla). As in our case, the axial (Figure 1) and coronal (Figure 2) computed tomograms reveal a well-defined cystic mass (asterisks) that is eroding the floor of the nasal cavity at the midline and expanding into both the nasal and the oral cavities. There is also erosion of the right maxillary sinus medial wall (arrow), with adjacent inflammatory disease in the ipsilateral sinus (arrowhead).

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