Apparently episodes of priapism can result in the development of megalophallus without any loss of function

https://www.sciencedirect.com/science/article/abs/pii/S0090429500006518
>We report a little known sequela of priapism: painless megalophallus, with significant penile enlargement.
>Megalophallus probably resulted from permanent loss of elasticity of the tunica albuginea due to severe engorgement during the episode of priapism.

The question is: how does priapism lead to the penis being enlarged? How does a prolonged erection do something like that? Could this phenomenon perhaps be replicated under controlled circumstances to induce growth of the penis?

Discuss