SIGNET-RING CELL CARCINOMA METASTASIZED INTO THE MENINGIOMA: A CASE REPORT

Abstract

Metastasis of extracranial malignant neoplasms to meningioma seen very rare (“tumor to tumor metastasis”). Metastasis to meningiomas are most frequently primary tumors of the breast and lung, while metastasis from the kidney tumors, thyroid, and uterus endometrium and even from melanomas have also been reported (1-5). According to our knowledge; this case, signet-ring cell adenocarcioma infiltration in a small focus within the intracranial meningothelial meningioma seems first in the literature.