Slide 39.Teratoma , Testis

A. Brief Descriptions

    Teratomas are divided into three categories:

B. Gross Findings

      Cystic & multiloculated.

C. Micro Findings

  1. All tissue are well differentiated or matured.

  2. All types of tissue can be seen, the most common being nerve, cartilage, smooth.

  3. Muscle & various types of epithelium (alimentary, respiratory, squamous).

D. Others:

  1. Definition:True neoplasm arising from totipotential cells & composed therefore of numerous.

  2. Types of tissue (more than one germinal layer).

  3. Mature teratoma of testis:The least aggressive of the nonseminomatous germ cell tumors of the testis.

E. Reference

     Robbins Pathologic Basis of Disease, 6th ed.  P.1021-1022.




Fig. 39-1 (1X)Cystic & multiloculated lesion.




Fig. 39-2 (4X)】Epithelial component seeen.




Fig. 39-3 (4X)】Skin component seen in this view.




Fig. 39-4 (4X)】Choroid plexus-like tissue seen in left view.




Fig. 39-5 (10X)】Catilage and bone seen in this view.





Fig. 39-6 (10X)】Mature goblet cells seen in this picture .