Uterine artery pulsatility index: A predictor of methotrexate resistance in gestational trophoblastic neoplasia

Neo-angiogenesis is an early sign of cancers. This study assessed if among low-risk gestational trophoblastic neoplasia (LR-GTN) patients, the uterine artery pulsatility index (UAPI), which is a measure of tumor vascularity, can be an independent predictor to resistance to methotrexate chemotherapy (MTX-R).