Adenocarcinoma. The cell in focus is comprised of a large nucleus, promininent nucleoli with an eccentric cytoplasm, suggesting glandular differentiation. Another fragment is shown with cells in a cohesive group with subtle cell borders. The nuclear outlines are irregular, and each contains a prominent nucleoli. The degree of atypia is consistent with an adenocarcinoma. The clean smear background is suggestive of a metastasis.