CommentarySinonasal Tubulopapillary Low-Grade Adenocarcinoma: A Specific Diagnosis or Just Another Seromucous Adenocarcinoma?Luna, Mario A MDAuthor Information From the Department of Pathology, University of Texas MD Anderson Cancer Center, Houston, Texas. Reprints: Dr. M. A. Luna, Department of Pathology, Unit 85, University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Houston, TX 77030 (e-mail: firstname.lastname@example.org). Advances in Anatomic Pathology: May 2005 - Volume 12 - Issue 3 - p 109-115 doi: 10.1097/01.pap.0000163961.18730.ba Buy Metrics Abstract 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. © 2005 Lippincott Williams & Wilkins, Inc.