“…Since the phase-field model usually has some good properties such as the law of energy dissipation, it has been used to study tumor growth for more than two decades, see [5,27,28,37,43,47,54,59] and reference therein. But it is worth noting that many developed models omit the actual interstitial fluid pressure [1,28,43,59] or just treat it as a fixed function (or constant) [30,37,52,64], although many physiological results suggest that tumor interstitial fluid pressure is a very important factor that can affect tumor prognosis, treatment, metastasis, and drug delivery, cf. [4,16,31,33,35,38,48].…”