Figure 3

Case 3. (a) The tumor was characterized by the proliferation of eosinophilic cells in a microcystic pattern; (b) focal deposition of oxalate crystals was also observed; (c) immunohistochemistry with AMACR showed negative results; (d) immunohistochemistry for CD10 with luminal immunoreactivity; (e) immunohistochemistry for AE1/AE3 showing cytoplasmic and membranous immunostaining; (f) immunohistochemistry for CAM5.2 displaying mainly cytoplasmic immunostaining. FISH analyses with centromeric probes showing nuclei with two hybridization signals for chromosome 1 (g), chromosome 2 (h), chromosome 6 (i), chromosome 10 (j), and chromosome17 (k).