| pubmed-article:15900111 | pubmed:abstractText | Histopathologically, sinonasal adenocarcinomas fall into four categories: the intestinal type, the conventional salivary gland type (eg, adenoid cystic carcinoma, acinic cell carcinoma), the seromucous type, and the low-grade not otherwise specified type. Recently, a new type of sinonasal adenocarcinoma has been described, called tubulopapillary low-grade adenocarcinoma. In this commentary, the histologic features of this type of tumor are compared with those of the other types of sinonasal adenocarcinoma. The clinicopathologic characteristics and probable origin of this type of adenocarcinoma are also discussed. | lld:pubmed |
