Abstract
Warthin's tumour (benign cystadenolymphoma) is the second most common salivary gland tumour after pleomorphic salivary adenoma, and it is commonly encountered in routine head and neck ultrasonography. Tissue diagnosis can be achieved by fine-needle aspiration. Infarction and inflammatory response following fine-needle aspiration is previously described in excision specimens. We describe 7 cases of radiologically infarcting Warthin's tumours in situ in a retrospective analysis of 76 patients, and demonstrate an approximate incidence of at least 9% of infarction following fine-needle aspiration in lesions left in situ. We recommend the possibility of infarction and associated clinical symptoms being incorporated into pre-fine-needle aspiration patient counselling.
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