Myeloid metaplasia of the central nervous system in patients with myelofibrosis and agnogenic myeloid metaplasia. Report of 3 cases and review of the literature.

Foci of meningeal myeloid metaplasia were found in 3 of 11 consecutive autopsied patients with myelofibrosis and agnogenic myeloid metaplasia. The clinical and pathological findings in an additional seven published patients with agnogenic myeloid metaplasia who developed neurological manifestations due to pressue of hemopoietic tumors in the central nervous system are reviewed.