CTVT undergoes a predictable cycle: the initial growth phase of four to six months (P phase), a stable phase, and a regression phase (R phase), although not all CTVTs will regress.
CCTVT prolazi kroz predvidljiv ciklus: inicijalna faza rasta od četiriju do šest mjeseci (faza P), stabilna faza i faza regresije (faza R), iako neće svi CTVT-ovi regredirati.