Bilateral intra‐lymph node Warthin's tumor as a potential diagnostic pitfall mimicking metastatic carcinoma

Abstract

AbstractWarthin's tumor (WT) is a benign and frequent salivary gland tumor primarily affecting the parotid gland. In some cases, this tumor can involve the extra parotid region and affect cervical lymph nodes. Fine‐needle aspiration can be the first step in the diagnostic approach to lymphadenopathy; however, specimens from intra‐nodal WT can present a potential pitfall, leading to a misdiagnosis of metastasis. Here, we report an unusual case of a patient with bilateral WT in parotid lymph nodes misdiagnosed as metastases. In addition, we highlight the cytopathological aspects of WT to alert cytopathologists about this challenging diagnosis.