Meningioma with Malignant Transformation and Implantation in the Subarachnoid Space

Abstract

This case is reported because d is tant implanta t ion from a mening ioma is found so rarely. I n the John Sealy Hospital , Univers i ty of Texas, Medical Branch, Galveston, Texas, f rom September 189~ to Ju ly 1958 there have been 632 histologically confirmed cases of p r imary intracranial tumors including surgical and autopsied cases. Of thesc, there have been 105 cases of meningioma, the present being the only one in which dis tant implanta t ions were suspected or found in the subarachnoid space. However , we mus t emphasize tha t appro i ima te]y onc4h i rd of the pat ients in our series are alive a t present. Of those who were known to be dead in 1954, au topsy was performed on only ~5 and the spinal cord was not complete ly examined in mos t of these cases. Therefore, imp]ants may he more f requent than wc have assumed in the past.