Identification of persistent trophoblastic diseases based on a human chorionic gonadotropin regression curve by means of a stepwise piecewise linear regression analysis after the evacuation of uneventful moles

Toshiyuki Shigematsu, Toshiharu Kamura, Toshiaki Saito, Tsunehisa Kaku, Hitoo Nakano, Naoko Kinugawa

研究成果: Contribution to journalArticle査読

30 被引用数 (Scopus)

抄録

Among the 191 patients with complete hydatidiform moles who were diagnosed and treated at Kyushu University Hospital from 1982 until 1996, 167 patients were diagnosed with uneventful moles retrospectively. The serial β human chorionic gonadotropin (hCG) values in the 167 patients with uneventful moles were analyzed by a stepwise piecewise linear regression analysis in order to establish a normal regression curve of a human chorionic gonadotropin after a molar pregnancy. This normal regression curve is considered to be excellent regarding sensitivity (24/24-100%) and to be equivalent to the identification based on a plateau or a rise regarding specificity (156/167-93.4%). To distinguish patients with persistent trophoblastic disease (PTD) from uneventful moles, this normal curve is thus considered to be accurate since the accuracy was 180/191 (94.2%). The weeks exceeding the normal regression curve in 24 PTD patients were 5.04 ± 3.85 weeks and were also earlier than the weeks based on a plateau or a rise (P = 0.01). Within 7 weeks after evacuation, in 21/24 (87.5%) of the PTD cases, the β-hCG values exceeded the normal range, while in only 14/24 (58.3%) the β-hCG showed a change in the shape of a plateau or a rise. In addition, in 19/24 (79.2%) of the PTD patients, the time exceeding the normal range was shorter than the time exhibiting a plateau or a rise in the β-hCG change. The above findings thus led us to conclude that this normal regression curve was useful for discriminating PTD from uneventful moles more precisely and more quickly than by identification based on a plateau or a rise.

本文言語英語
ページ(範囲)376-380
ページ数5
ジャーナルGynecologic Oncology
71
3
DOI
出版ステータス出版済み - 12 1998

All Science Journal Classification (ASJC) codes

  • 腫瘍学
  • 産婦人科学

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