As 3D printing technology continues to take the medical field by storm, 3D printed implants fit for human use have risen into prominence. From functional ear replacements to spinal implant parts, researchers are finding that 3D printing can potentially help mend almost any part of the human body. Now, it appears that tumors are next on the 3D printing hit-list; Australian neurosurgeon Dr. Ralph Mobbs has used this emerging technology to help treat a patient with an extremely hard-to-reach neck tumor.