According to these results from the Spanish Group of Lung Metastases of Colo-Rectal Cancer, the combination of these four variables-disease-free interval, carcinoembryonic antigen level, laterality, and thoracic lymph node involvement-constitutes the first-choice survival causal model based on the clinical and pathologic factors most frequently referenced in literature.

This study shows that a well-trained dog can detect the presence of LC in exhaled gas samples with an extremely high accuracy.

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