How is composition of teratoma?

➢ Teratomas are composed of a heterogeneous, collection of differentiated cells or organoid structures, ➢ Such as neural tissue, muscle bundles, islands of cartilage, clusters of squamous epithelium, structures reminiscent of thyroid gland, bronchial epithelium, and bits of intestinal wall or brain substance, ➢ All embedded in a fibrous or myxoid stroma ➢ Elements may be mature (resembling various tissues within the adult) or immature (sharing histologic features with fetal or embryonal tissues) ➢ Regardless of whether they are composed of mature or immature elements, postpubertal males teratomas are malignant, being capable of metastasis.