[A rare case of tumor-to-tumor metastasis: secondary deposits of pulmonary adenocarcinoma in a secretory meningioma].

Objective: To report a rare case of tumour-to-tumour metastasis with differential diagnostic considerations.

Methods And Results: We report the operation of a Sylvian fissure secretory meningioma in a 48 year-old woman. The tumour was suspicious of a metastasis related to a pulmonary adenocarcinoma operated 4 months before.

Metastasis of pulmonary adenocarcinoma in right sylvian secretory meningioma.

We report a secretory meningioma with metastasis from a pulmonary adenocarcinoma in a 48-year-old woman. Secretory meningioma can simulate metastatic disease both clinically and pathologically. Secretory meningioma and tumour-to-tumour metastasis are each rare, and we believe this to be the first report of their coincidence.