18

M 17 y.o. FNA submandibular gland

Cytological findings: Mucocoele

Watery or viscous fluid
Scanty cellularity
Leucocytes and macrophages in variable numbers
Few epithelial cells
Many leucocytes and epithelial atypia if secondarily infected

Differential diagnosis: Mucocoele
- Warthin's tumour
- Pleomorphic adenoma
- Mucoepidermoid carcinoma
- Acinic cell carcinoma
- High grade carcinoma
- Low-grade mucoepidermoid carcinoma