The following observation on multiple meningiomas was deemed worthy of report because of its rarity and its unusual surgical aspect. According to Echols,1 who recently reviewed the literature and added an observation of his own, 53 cases of multiple meningiomas have been recorded hitherto.
Multiple meningiomas follow no particular pattern of localization; in fact, the tumors may occur wherever the arachnoid cell clusters described by Schmidt2 and Aoyagi and Kyuno3 are situated. In most of the cases of multiple meningiomas reported the tumors were intracranial or intracranial and spinal; there were only few instances of multiple spinal meningiomas. The incidence of multiple meningiomas is certainly small as compared with the frequency of single tumors; yet the figures of different authors vary considerably in this respect. Thus, Cushing and Eisenhardt4 found 3 cases of multiple meningiomas in a series of 313 cases of intracranial and spinal meningiomas,