Weissferdt et al. [44] explored the genetic setup of the neurofibromatosis (NF) 2 gene on 22q, the commonest genetic abnormality in meningioma, in nine pleuropulmonary meningothelial lesions (six multiple MMNs and three PPMs) and nine intracranial meningiomas by fluorescence in situ hybridization. Here, NF1 is linked to meningioma.