Histopathological findings of the present case. A, Photomicrographs of the tumor specimen showing a moderately cellular tumor composed of compact epithelial cells showing tubular pattern. Hematoxylin & Eosin. Original magnification × 200. B, Alcian-blue stain revealing myxoid or colloid materials in the tubules. C, Molecular immunology Borstel-1 (MIB-1) staining index indicating around 10%. D, Immunohistochemistry for neurofibrillary protein demonstrating neural bundles in the tumor.