Workshop Nr. 11 - Teratomas and tumors and pseudotumoral lesions of melanocytes

Question 1

What are teratomas?

Answer 1

• -tumors originating in germ cells (germinal multipotent cells)
• capable of differentiating into any cell type

Question 2

Tissue types in teratomas

Answer 2

• all 3 germ layers (endoderm, ectoderm,mesoderm)
• tissue types: brain, respiratory/intestinal mucosae, cartilage, bone, skin, teeth, hair

Question 3

classification of teratomas

Answer 3

location

• median

(sacro-coccigian,mediastinal,cervical)

• paramedian

(ovary,testis)

gross appearance

• cystic tumors
• solid tumors
• mixed tumors (solid tumor + microcystic structure)

behavior

• benign

cystic tumors, rarely solid tumors

• malignant

immature solid tumors