Figure 2From: Long survival of primary diffuse leptomeningeal gliomatosis following radiotherapy and temozolomide: case report and literature review Intradural lumbar biopsy displays fibrously-thickened lep-tomeninges infiltrated by pleomorphic neoplastic astrocytic cells (a). The astrocytic tumor cells reveal intensive intracytoplasmic staining with anti-glial fibrillary astrocytic protein. (b). Ki67 (MIB-1) staining reveals a high proliferation index of up to 20% (c).Back to article page