Case ReviewsBilateral Multifocal Warthin Tumors Mimicking Metastatic Papillary Thyroid Carcinoma A Rare Case Posing a Diagnostic ChallengeKulkarni, Tanvee MD*; Shah, Snehal MS†; Rane, Swapnil MD, DNB, PDCC, MRes (TCM)*,‡; Mahajan, Abhishek MD‡,§; Bal, Munita MD*,‡; Vaish, Richa MS, MCh†; Patil, Asawari MD*,‡Author Information From the Departments of *Pathology †Surgical Oncology ‡Head & Neck Oncology Disease Management Group ‡Department of Radiology, Tata Memorial Centre, Homi Bhabha National Institute, Mumbai, India. Reprints: Asawari Patil, MD, Department of Pathology, 8th Floor, Annexe Building, Tata Memorial Centre, 400012 Mumbai, India. E-mail: email@example.com. The authors have no funding or conflicts to declare. AJSP: Reviews & Reports: January/February 2020 - Volume 25 - Issue 1 - p 8-11 doi: 10.1097/PCR.0000000000000356 Buy Metrics Abstract Warthin tumor is the second most common benign tumor of parotid gland. It rarely may be multifocal and occur at extraparotid sites, most common being the cervical lymph nodes. Fine-needle aspirate cytology is diagnostic in most cases of parotid Warthin tumors; however, in extraparotid sites, the diagnosis can be challenging. The difficulty can be further amplified if there is a synchronous lesion in a visceral organ on radiology, raising the suspicion of a metastatic carcinoma. We report an unusual diagnostically challenging case of synchronous, bilateral, multifocal intraparotid and extraparotid Warthin tumors mimicking a metastatic papillary thyroid carcinoma. We also highlight the usefulness of intraoperative consultation in guiding appropriate management in such cases. © 2020 Lippincott Williams & Wilkins, Inc.