On x-ray, sacrococcygeal teratoma is characterized by a large mass projecting from the lower pelvic region or within the abdomino-pelvic cavity.
How do sacrococcygeal teratomas appear on a pelvic X-ray?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How do sacrococcygeal teratomas appear on a pelvic X-ray? [/INST] \n On x-ray, sacrococcygeal teratoma is characterized by a large mass projecting from the lower pelvic region or within the abdomino-pelvic cavity.</s>