title: Intraoral papillary squamous cell tumor of the soft palate with features of sialadenoma papilliferum-? malignant sialadenoma papilliferum.
abstract: An unusual, recurring, squamous papillary tumor involving and possibly arising from minor salivary gland excretory ducts in the palate is presented. Similarity to sialadenoma papilliferum and upper respiratory tract papillomatosis is noted. A paraglandular cystic mass with some resemblance to the palatal lesion, and a solitary lymph node with papillary squamous epithelial deposits was found in a radical neck dissection. We suggest that the lymph node lesion represents a metastasis which may have arisen from the palatal lesion, and therefore propose the concept of a possible malignant analogue of sialadenoma papilliferum.
mesh_terms: D002291:Carcinoma, Papillary / Q000473:pathology*; D004848:Epithelium / Q000473:pathology; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D010157:Palatal Neoplasms / Q000473:pathology*; D010160:Palate, Soft; D010212:Papilloma / Q000473:pathology*; D012008:Recurrence; D012468:Salivary Gland Neoplasms / Q000473:pathology*; D013997:Time Factors