A defining characteristic of a teratoma is the presence of tissues derived from two or more embryonic germ layers (ectoderm, mesoderm, endoderm). Therefore, a testicular teratoma can contain a bewildering array of differentiated tissues such as cartilage, bone, muscle, hair, skin, and even rudimentary teeth or thyroid tissue. This occurs because the tumor arises from a pluripotent germ cell that has aberrantly differentiated. In adult males, testicular teratomas are considered malignant (unlike ovarian dermoid cysts). They can be mature (well-differentiated tissues) or immature (fetal-type tissues), but both have malignant potential.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Naomi Miselo – 31 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies