Synchronous Presentation of Right Parotid Branchial Cleft Cyst and Left Neck HPV-Associated Cystic Metastatic Squamous Cell Carcinoma: A Diagnostic Quandary.

Branchial cleft cyst arising within the parotid space is considered an extremely rare phenomenon. In contrast, cystic squamous cell carcinoma in the lateral neck is not an uncommon presentation of HPV-related head and neck cancer. Although they have singly been narrated in literature, simultaneous expression of these anomalies has yet to be reported. We describe a case of synchronous presentation of branchial cleft cyst of the right parotid gland and cystic metastatic squamous cell carcinoma of the left neck. These findings are discussed in light of the challenges in fine needle aspiration biopsy of cystic masses, and the risk of two distinct pathologic entities presenting as cysts in the head and neck.