<prompt> Primitive streaks remnants give rise to:-NeuroblastomaWilms tumorSacrococcygeal teratomaHepatoblastoma  <response>: SACROCOCCYGEAL TERATOMA Teratomas occur most frequently in the neonatal period, sacrococcygeal region is the MC siteQ. TREATMENT Complete surgical excisionQ through a chevron-shaped buttock incision. 