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. 2010 Sep 24;120(6):755–764. doi: 10.1007/s00401-010-0749-z

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© The Author(s) 2010

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Fig. 2 — Intermediate-grade melanocytoma (case 20) with invasion of neuroglial tissue; note the Rosenthal fibers (arrow) in the surrounding neuropil (a) (×200). Epithelioid cell morphology with bland nuclei and small nucleoli in a melanocytoma (case 22) (b) (×400). Focal positivity for S-100 in the same lesion (case 22) (c) (×200). Diffuse positivity for HMB-45 and Melan-A, respectively, in the same lesion (d, e) and a nested staining pattern in the reticulin stain (f) (case 22) (Laguesse stain, ×200)