Sinonasal tubulopapillary low-grade adenocarcinoma. Histopathological, immunohistochemical and ultrastructural features of poorly recognised entity

Abstract

We present the clinicopathological, histological and immunohistochemical findings of six cases of primary tubulopapillary low-grade adenocarcinoma of the sinonasal tract with ultrastructural examination in one case.

Keywords

• Sinonasal
• tubulopapillary
• low-grade
• adenocarcinoma
• Histopathological
• immunohistochemical
• ultrastructural
• features
• poorly
• recognised
• entity