Parotid duct carcinoma arising in bilateral chronic sialadenitis

It is well recognized that, in general, chronic inflammation can predispose to malignant: change. There is however, to our knowledge, no previously re ported association between chronic obstructive sialadenitis and salivary gl and epithelial malignancy. We describe here the first reported example in t he English literature of a salivary duct carcinoma arising in a parotid gla nd with a long history of chronic obstructive sialadenitis. It is possible that a causal relationship exists between the two conditions. If this were the case then non-surgically treated chronic obstructive sialadenitis patie nts may well warrent careful clinical follow-up.