![](https://webarchive.library.unt.edu/eot2008/20090514051400im_/http://www.cancer.gov/images/spacer.gif) |
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(OP-tih-kul spek-TROS-koh-pee)
![](https://webarchive.library.unt.edu/eot2008/20090514051400im_/http://www.cancer.gov/images/spacer.gif)
| In medicine, a technique that uses low power light, fiberoptic instruments, and detectors to examine tissue. It is being studied as a way to identify differences between normal cells and precancerous cells, and as a way to identify cancer cells that remain in the edges of tumor tissue removed from a patient. |
Previous Definitions: | optic chiasma, optic nerve, optic pathway glioma, optic tract, optical coherence tomography | Next Definitions: | oral, oral and maxillofacial surgeon, oral cancer, oral cavity, oral cavity cancer |
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![](https://webarchive.library.unt.edu/eot2008/20090514051400im_/http://www.cancer.gov/images/spacer.gif) |