Most laryngeal cancers originate in the glottis.

Mantle's cancer originated in his liver, which was removed in transplant surgery on June 8.

To understand why, we need to know what comprises breast tissue and where cancer originates.

But we don't know how cancer originates, so it is not (yet) possible to prove or disprove that a given chemical causes cancer.

Thus, the cancer must have originated in a single female individual and spread, rather than arising separately within each individual.

Pathologists have long recognized that tumors contain a variety of cells, including some that are characteristic of the tissue in which the cancer originates.

Furthermore, many cancers originate from a viral infection; this is especially true in animals such as birds, but less so in humans.

Approximately eight out of 10 cervical cancers originate in surface cells lining the cervix (squamous cell carcinomas).

Doctors removed his right testicle, where the cancer had originated.

In January 2010, his doctors discovered that the cancer had originated in his lungs.