2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87313We studied the single-variable dynamics model of the tumor growth. A first-order phase transition induced by an additive noise is shown to reproduce the main features of tumor growth under immune surveillance. The critical average cells population has a power-law function relationship with the immune coefficient.3 pages, 3 figuresMedical Physicstext