system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Sacrococcygeal teratoma is a derivative of
assistant
The correct answer is  Sacrococcygeal teratoma: - Sometimes remnants of the primitive streak persist in the sacrococcygeal region. Then cluster of pluripotent cells proliferate & form tumor, known as sacrococcygeal teratomas Which commonly contain tissues derived from all three germ layers. Occurrence 1: 37,000 Most common tumor in a new born. Teratomas may also arise from abberent migration of primordial germ cells.