Suggest the diagnosis according to the microscopic description. H-E staining: The tumor is composed of highly differentiated tissue elements from the three germinal cell layers mesodermal layer (connective tissue, collagen fibres, fatty tissue, cartilage and others), endodermal layer (glands) and ectodermal layer (skin, columnar epithelium, stratified squamous epithelium, brain substance). They create a variety of the morphological picture. There isn’t any sign of cell atypia. Cystic changes are often seen.
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