title: Polymorphous low-grade adenocarcinoma located in the maxillary sinus.
abstract: Polymorphous low-grade adenocarcinoma is a malignant epithelial tumour with low     metastatic rate and infiltrative growth pattern. The palate is the most common     site. Paranasal sinuses are uncommon venues for polymorphous low-grade     adenocarcinoma. Here, we report a polymorphous low-grade adenocarcinoma case of     the maxillary sinus, a very rare location. Although it is a low grade     malignancy, progression may develop after a long time. Therefore, polymorphous     low-grade adenocarcinoma should be kept in mind in the differential diagnosis     even in rare sites in the head and neck.
authors.affiliation: Department of Pathology, İzmir Tepecik Education and Research Hospital, İzmir, Turkey. demetetit@yahoo.com
authors.forename: Demet
authors.initials: D
authors.lastname: Etıt
authors.forename: Deniz
authors.initials: D
authors.lastname: Altinel
authors.forename: Ümit
authors.initials: Ü
authors.lastname: Bayol
authors.forename: Ayça
authors.initials: A
authors.lastname: Tan
authors.forename: Özlem
authors.initials: Ö
authors.lastname: Türelık
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Çukurova
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000328:Adult; D006801:Humans; D008297:Male; D008444:Maxillary Sinus Neoplasms / Q000473:pathology*; D060787:Neoplasm Grading; D009364:Neoplasm Recurrence, Local / Q000473:pathology*