Metastatic Renal Cell Carcinoma Masquerading As Benign Cystic Lesion On Cytology

Clear Cell-Renal Cell Carcinoma (CC-RCC), the most common subtype, accounting for 75% of all RCCs, can metastasize to any part of the body. Nodal metastasis is commonly noted in the pulmonary, tracheal and retroperitoneal lymph nodes. However, metastasis to cervical/supraclavicular lymph nodes is extremely rare. Moreover, these metastatic nodal deposits are usually solid, but may become cystic, which warrants a differential diagnosis of metastatic lesion in an elderly patient. So, here we report a case of metastatic RCC presenting as left supraclavicular lymphadenopathy without any clinical manifestations of the primary which was misdiagnosed as a benign cystic lesion on cytology.