*4.1.3 Polymorphous adenocarcinoma (POA)*

Previously called as polymorphous low grade adenocarcinoma, it is a low-grade matrix containing tumour occurring predominantly in intraoral minor salivary gland with palate being the most common site [29].

**Key cytological features –** Cells are seen in clusters, papillae, trabeculae, singly scattered and also in form of epithelial fragments attached to fibrovascular stromal cores (**Figure 7**). The cells are monomorphic with oval nuclei, open chromatin and indistinct nucleoli with moderate amount of cytoplasm. Small hyaline globules can be seen admixed with these cells.
