Fig. 1

Histopathologic findings in UESL cases. A Anaplastic stellate and spindle-shaped tumor cells with indistinct cytoplasmic border and light cytoplasm (Hematoxylin and Eosin, 400×). B Anaplastic epithelioid tumor cells with eosinophilic cytoplasm (Hematoxylin and Eosin, 400×). C Hyperchromatic nuclei with irregular nuclear border and multiple mitoses (Hematoxylin and Eosin, 400×). D Loosely arranged tumoral cells (Hematoxylin and Eosin, 100×). E Compactly arranged tumoral cells (Hematoxylin and Eosin, 100×). F Bizarre and multinucleated tumor cells with highly atypical nuclei (Hematoxylin and Eosin, 400×). G Multiple variably-sized eosinophilic hyaline globules (Hematoxylin and Eosin, 400×). H Periodic acid-Schiff diastase resistant-positive hyaline globules (400×). I Collections of small round cells (Hematoxylin and Eosin, 200×). J Hemangiopericytomatous pattern (Hematoxylin and Eosin, 40×). K Section from liver mass showing embryonal sarcoma at the top and mesenchymal hamartoma at the bottom (Hematoxylin and Eosin, 15×)