Tren related gyno is prolactin induced, not estrogen induced. Prolactin stimulates the mammary glands to lactate (produce milk). To prevent that, you need Caber or Prami ( personally, I prefer Caber)
Masteron is a "non aromatizing" AAS, which means it doesn't convert to estrogen, nor DHT. While it has SOME anti E properties, when taken with Test, you still need Aromatase inhibitor (AI). It has absolutely NO impact on prolactin....