Figure 5From: Ancient schwannoma of lumbar spine and review of the literature on paraspinal tumors, the role of preoperative biopsy: a case reportA: Hematoxylin-eosin stained sections (×40) reveal ancient schwannoma with circumscribed spindle-cell tumor, cellular atypia but no mitotic activity, myxoid degeneration, and vessels with hyalinized walls. b: Strongly positive S100 immunohistochemistry in ancient schwannoma.Back to article page