Table 2.
Histopathologic features of intraoral salivary duct cysts
| Cyst architecture | |
| One epithelium-lined cyst | 164 (92.7%) |
| Two or more epithelium-lined cysts | 12 (7.3%) |
| Undulating (papillary-like) lining | 73 (41.2%) |
| True papillaea | 0 (0.0%) |
| Adenomatous plaques | 0 (0.0%) |
| Intraluminal secretion | |
| Mucous | 74 (41.8%) |
| Incipient calcification | 8 (4.5%) |
| Cyst lining | |
| Cuboidal/columnar | 151 (85.3%) |
| Oncocytic metaplasia | 90 (50.8%) |
| Mucous cell metaplasia | 64 (36.2%) |
| Squamous metaplasia | 42 (23.7%) |
| Ciliated cells | 29 (16.4%) |
| Apocrine-like cells | 25 (14.1%) |
| Basement membrane hyalinization | 34 (19.2%) |
| Inflammatory infiltrate | |
| Acute | 0 (0.0%) |
| Chronic | 74 (41.8%) |
| Mixed | 53 (29.9%) |
| Total | 127 (71.8%) |
| Chronic obstructive sialadenitis | 101b (90.2%) |
| Papillary oncocytic cystadenoma-likec | 39 (22.0%) |
| Warthin tumor-liked | 7 (4.0%) |
aAs defined by the presence of fibrovascular cores
bOut of 112 cases with associated minor salivary glands
cAs defined by complete oncocytic metaplasia and undulating architecture
dAs defined by complete oncocytic metaplasia, undulating architecture, and associated lymphoplasmacytic infiltrate