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A significant risk of malignant tumors is that cancer cells can spread, or metastasize.
An appendix handily includes TNM classification of primary malignant tumors.
The study, conducted between 1988 and 1997, surveyed 61 hospital patients who were exposed to radiation from the bombings before they were born and were suspected of having malignant tumors such as cancer, hospital officials said.
The programs include a liver-specific agent for use in detecting cancer that has spread to that organ and a tumor-enhancing MRI agent with increased sensitivity and potential to distinguish benign tumors from malignant tumors.
The arsenic-transformed cells had been exposed continuously to sodium arsenite and, after 29 weeks of exposure, produced malignant tumors when inoculated into nude mice.
2% of all head and neck malignancies and approximately 1% of all laryngeal malignant tumors, although it is the most common nonepithelial neoplasm of the larynx.
Indeed, more-severe lesions appeared as the mice aged, and, in a few old mice, the lesions gave rise to highly malignant tumors.
Differences in the numbers of these cell types between benign and malignant tumors were compared using the nonparametric Mann-Whitney statistical test.
NYSE: SYN) today announced that they have established an alliance for the purpose of discovering novel drugs for treatment of arthritic diseases and invasive malignant tumors and certain other diseases.
When lymphocytes, or white blood cells, which are responsible for defending the body against infection, divide and multiply uncontrollably, malignant tumors can form.
Although most tumors that originate in the external auditory canal are benign inflammatory polyps related to ear infections, a variety of other benign and malignant tumors occur there as well.