Teratomas: Tumors with Shocking Capabilities

Some cancer tumors, called teratomas, can actually grow hair, teeth, bones, and even eyes, but not a heart or brain. These strange growths are like mini-monsters within our own bodies, sprouting human-like features in unexpected places. And the weirdness doesn't stop there - some teratomas have even been found to contain functioning vocal cords and have made noises while still inside the body!