[Granulomatous reaction associated with metastatic epidermoid carcinoma. The importance of the use of multiple methods in diagnostic pathology]. / Reação granulomatosa associada a metástase de carcinoma epidermóide. Importância da utilização de múltiplos métodos em patologia diagnóstica.

ABSTRACT

A case of epidermoid carcinoma with metastasis to a cervical lymph node is reported. Due to an intense granulomatous reaction and the similarity of the neoplastic cells with the epithelioid cells there was diagnostic difficulty when based only on histology and fine needle aspiration cytology. The utilization of electron microscopy and immunoperoxidase defined the diagnosis. Discussion is made about the importance of the utilization of multiples methods in surgical pathology and the pathogenesis of the granulomatous reaction associated with malignant neoplasms.