Metastatic Oncocytic Papillary Renal Cell Carcinoma of Scalp Diagnosed by Fine Needle Aspiration: A Rare Entity with Review of Literature.

Fine-needle aspiration cytology is a minimally invasive, rapid, and safe technique used as a first line of investigation for confirmation of various cutaneous metastatic lesions, at times which can be the primary presenting symptom of underlying silent visceral cancers. We report a case of metastatic Oncocytic Papillary Renal Cell Carcinoma (OPRCC) over the scalp as the first presentation of the underlying primary tumor diagnosed on fine-needle aspiration and confirmed by immunohistochemistry on the cell block.