Pleomorphic adenoma is the most common tumour to arise in the parotid
gland. Diagnosis becomes difficult when such a tumour undergoes degene
ration and presents with unusual findings. This can lead to erroneous
decisions concerning treatment. We present two patients with pleomorph
ic adenoma of the parotid gland with cystic degeneration, describe the
pathological findings and discuss some pitfalls in diagnosis and trea
tment. Both patients recovered uneventfully after surgery.