《Slide 72.》Cystic mature teratoma, Testis

A. Brief Descriptions：

1. The tumor is composed of neural tissue,squamous epithelium and connective tissue stroma.

2. Devoid of EC cells.

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 muscle & various types of epithelium (alimentary, respiratory, squamous.

D. Others:

1. Definition：true neoplasm arising from totipotential cells & composed therefore of numerous types of tissue (more than one germinal layer).

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

E. Reference：

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

　

 

 

【 Fig. 72-1 (1X)】All types of tissue can be seen.

 

 

【 Fig. 72-2 (2X)】Lobulated and cystic lesion with cartilage seen in this view.

　

 

【 Fig. 72-3 (2X)】Choroid plexus-like structure seen in this view.

　

 

 

【 Fig. 72-4 (4X)】Skin elements and cartilage seen in this view.

　

 

 

【 Fig. 72-5 (10X)】Mature cartilage seen in this picture.

　

 

 

【 Fig. 72-6 (4X)】Skin element with hair shafts seen.

　

 

 

【 Fig. 72-7 (4X)】Ciliated epithelium and glands seen in lefrt view.

　

 

 

【 Fig. 72-8 (4X)】Brain tissue seen in this picture.

　

 

 

【 Fig. 72-9 (10X)】Epithelial component seen.

　

 

 

【 Fig. 72-10 (10X)】Brain tissue seen in this picture.

　

 

 

【 Fig. 72-11 (10X)】Collagen seen in this view.

　

　

 

【 Fig. 72-12 (10X)】Bone and cartilage are seen.

　

 

 

【 Fig. 72-13 (10X)】Gastrointestinal mucosa seen in this view.