There are also case reports of tumors arising in the appendix and/or pancreas.

When a tumor arises it has the capacity to secrete large volumes of hormones.

The criteria for staging can differ dramatically based upon the organ system in which the tumor arises.

There are many different types of benign tumors arising from different structures in the body.

This demonstrates that the tumors do not arise from separate cancerous transformation in individual animals.

This finding was consistent with the idea that most tumors arise in individuals with normal immune systems.

Other scientists cautioned that the new findings merely added detail to the already complex picture of how tumors arise and grow.

This model highlights the fact that malignant tumors arise and flourish within the environment of a whole organism.

Most pituitary tumors arise spontaneously and are not genetically inherited.

An adenoma is a benign tumor arising in glandular tissue.