Table 1

Major criteria	Minor criteria
1. Squamous epithelial lining, with a flat interface with the connective tissue wall, lacking basal palisading. 2. Epithelium exhibiting variations in thickness along the cystic lining with or without epithelial ''spheres'' or ''whorls'' or focal luminal proliferation. 3. Cuboidal eosinophilic cells or ''hobnail'' cells . 4. Mucous (goblet) pools, with or without crypts lined by mucous-producing cells. 5. Intraepithelial glandular, microcystic, or duct-like structures.	1. Papillary proliferation of the lining epithelium. 2. Ciliated cells. 3. Multicystic or multiluminal architecture. 4. Clear or vacuolated cells in the basal or spinous layers.

Major criteria

Minor criteria

1. Squamous epithelial lining, with a flat interface with the connective tissue wall, lacking basal palisading.
2. Epithelium exhibiting variations in thickness along the cystic lining with or without epithelial ''spheres'' or ''whorls'' or focal luminal proliferation.
3. Cuboidal eosinophilic cells or ''hobnail'' cells .
4. Mucous (goblet) pools, with or without crypts lined by mucous-producing cells.
5. Intraepithelial glandular, microcystic, or duct-like structures.

1. Papillary proliferation of the lining epithelium.
2. Ciliated cells.
3. Multicystic or multiluminal architecture.
4. Clear or vacuolated cells in the basal or spinous layers.