WordNet

a state or condition being blighted
any plant disease resulting in withering without rotting
cause to suffer a blight; "Too much rain may blight the garden with mold" (同)plague
the female reproductive cell; the female gamete (同)egg_cell
affected by blight; anything that mars or prevents growth or prosperity; "a blighted rose"; "blighted urban districts" (同)spoilt

PrepTutorEJDIC

〈U〉胴枯れ病(さび病・黒穂病・べと病など,菌の寄生のために起こる植物の病気) / 〈C〉(…を)破壊(だめに)するもの(人)《+『of』(『on』)+『名』》 / 〈U〉荒発した状態 / …'を'枯らす,しおれさせる / 〈希望など〉'を'くじく,損なう,台なしにする
卵,卵子

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/02/06 13:53:05」(JST)

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An anembryonic gestation (also known as a blighted ovum) is a pregnancy in which the very early pregnancy appears normal on an ultrasound scan, but as the pregnancy progresses a visible embryo never develops. In a normal pregnancy, an embryo would be visible on an ultrasound by six weeks after the woman's last menstrual period.

An anembryonic gestation is characterized by a normal-appearing gestational sac, but the absence of an embryo. It likely occurs as a result of early embryonic death with continued development of the trophoblast. When small, the sac cannot be distinguished from the early normal pregnancy, as there may be a yolk sac, though a fetal pole is not seen. For diagnosis, the sac must be of sufficient size that the absence of normal embryonic elements is established. The criteria depends on the type of ultrasound exam performed. A pregnancy is anembryonic if a transvaginal ultrasound reveals a sac with a mean gestational sac diameter (MGD) greater than 13 mm and no yolk sac, or an MGD >18 mm with no embryo. If a transvaginal exam is not performed, the criteria for a transabdominal scan is a MGD of 25 mm or more without an embryo or an MGD of 20 mm or more without a yolk sac.

Rather than do a transvaginal exam at the time of the initial visit, many centers prefer to do only a transabdominal study and offer mothers a follow-up ultrasound 10 days later to see if a normal pregnancy subsequently develops.

Anembryonic gestation is one of the causes of miscarriage of a pregnancy. Several management options exist for anembryonic pregnancies which have not miscarried on their own.

External links

Douglas S. Richards (2003). "Spontaneous abortion- Anembryonic gestation". Ob/Gyn Ultrasound. Department of Obstetrics and Gynecology, University of Florida. Archived from the original on 2006-12-09. http://web.archive.org/web/20061209114035/http://www.obgyn.ufl.edu/ultrasound/4Gyn/1First+TM/9Anembryonic.html. - includes ultrasound images with descriptions (via archive.org)

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1. 自然流産：管理 spontaneous abortion management
2. 自然流産：危険因子、病因、臨床症状、および診断的評価 spontaneous abortion risk factors etiology clinical manifestations and diagnostic evaluation
3. 妊婦における腟出血の病因および評価の概要 overview of the etiology and evaluation of vaginal bleeding in pregnant women
4. 妊娠付属物遺残 retained products of conception
5. プロゲステロン受容体拮抗剤および選択的プロゲステロン受容体モジュレーターの
治療使用および有害作用 therapeutic use and adverse effects of progesterone receptor antagonists and selective progesterone receptor modulators

English Journal

A comparative study of cost of care and duration of management for first-trimester abortion with manual vacuum aspiration (MVA) and sharp curettage.

Choobun T, Khanuengkitkong S, Pinjaroen S.SourceDepartment of Obstetrics and Gynecology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand, cthanapa@yahoo.com.
Archives of gynecology and obstetrics.Arch Gynecol Obstet.2012 Jun 9. [Epub ahead of print]
OBJECTIVE: This study compared the hospital charges, duration of in-hospital procedures, clinical course and complications between manual vacuum aspiration (MVA) and sharp curettage.MATERIALS AND METHODS: A prospective observational study was conducted during the May 2007-April 2008 period in Songkl
PMID 22684851

Recurrent ectopic pregnancy in a woman suffering from infertility due to male factor presented with heterotopic pregnancy.

Chaudhari HD, Gandhi VS, Banker H, Suri A.SourceRadiology Department, Smt SCL Municipal General Hospital and NHL Municipal Medical College, Ahmedabad, Gujarat, India. drhdc1@yahoo.com
BMJ case reports.BMJ Case Rep.2012 May 11;2012. pii: bcr0220125784. doi: 10.1136/bcr.02.2012.5784.
Heterotopic pregnancy is the simultaneous occurrence of intrauterine and extrauterine pregnancies. A 27-year-old third gravida with history of two ectopic pregnancies, presented with cramping pain in pelvis radiating to left side and bleeding from vagina. Ultrasonographic diagnosis of heterotopic pr
PMID 22605872