FNA may lead to ischemic injury resulting in the infarction of WT.

Infarcted WT may demonstrate variable gross and histologic alterations that may render the diagnosis challenging at the time of frozen section evaluation.

The histologic findings of infarcted WT include necrosis, ghosts of papillae, squamous metaplasia, cholesterol clefts, foamy macrophages, multinucleated giant cell reaction, necrotizing granulomas, and fibrosis.

Potential pitfalls in the diagnostic consideration of infarcted WT include squamous cell carcinoma, mucoepidermoid carcinoma, lymphoepithelial cysts, and chronic sialadenitis.