hydatidiform mole

      in human pregnancy, abnormal growth of the chorion, the outermost vascular membrane that in a normal pregnancy would enclose the embryo and ultimately give rise to the placenta. In the situation in which the hydatidiform mole develops, the embryo is usually either absent or dead. The mole, a collection of sacs (cysts) containing a jellylike substance, resembles clusters of grapes and can attain a great size. Most of the moles are expelled in about the 20th week of pregnancy. The moler pregnancy is usually terminated by suction curettage. In a few cases, the mole spreads into the muscle of the uterus and causes bleeding. If this is severe, the obstetrician may remove the mole by surgery. In extremely rare instances, hydatidiform moles develop into choriocarcinomas, which are highly malignant tumours.

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Universalium. 2010.

Look at other dictionaries:

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  • Hydatidiform mole — A tumor that forms in the uterus as a mass of cysts resembling a bunch of grapes. Moles occur during the childbearing years. They do not spread outside of the uterus. However, a malignancy called choriocarcinoma may start from a hydatidiform mole …   Medical dictionary

  • hydatidiform mole — A slow growing tumor that develops from trophoblastic cells (cells that help an embryo attach to the uterus and help form the placenta) after fertilization of an egg by a sperm. A hydatidiform mole contains many cysts (sacs of fluid). It is… …   English dictionary of cancer terms

  • hydatidiform mole — hydatid mole; = vesicular mole a collection of fluid filled sacs that develop when the membrane (chorion) surrounding the embryo degenerates in early pregnancy with proliferation of the trophoblast. These sacs give the placenta the appearance of… …   The new mediacal dictionary

  • hydatidiform mole — noun an abnormality during pregnancy; chorionic villi around the fetus degenerate and form clusters of fluid filled sacs; usually associated with the death of the fetus • Syn: ↑hydatid mole, ↑molar pregnancy • Hypernyms: ↑abnormality, ↑abnormalcy …   Useful english dictionary

  • hydatidiform mole — [ˌhʌɪdə tɪdɪfɔ:m] noun Medicine a cluster of fluid filled sacs formed in the womb by the degeneration of chorionic tissue around an aborting embryo …   English new terms dictionary

  • Занос Пузырный, Хориоаденома (Hydatidiform Mole, Hydatid Mole, Vesicular Mole) — заболевание, при котором ворсинки хориона превращаются в пузырьки, заполненные светлой жидкостью. Они развиваются, когда на раннем сроке беременности в окружающей эмбриона оболочке (хорионе) начинают происходить дегенеративные изменения.… …   Медицинские термины

  • invasive hydatidiform mole — A type of cancer that grows into the muscular wall of the uterus. It is formed after conception (fertilization of an egg by a sperm). It may spread to other parts of the body, such as the vagina, vulva, and lung. Also called chorioadenoma… …   English dictionary of cancer terms

  • Mole hydatiforme — Môle hydatiforme Pour les articles homonymes, voir Mole. Môle hydatiforme CIM 10 : O01, D39.2 La môle hydatiforme est une anomalie rare de la grossesse, définie par la prolifération kystique des villosités choriales associée à une dégénérescence… …   Wikipédia en Français

  • Môle (médecine) — Môle hydatiforme Pour les articles homonymes, voir Mole. Môle hydatiforme CIM 10 : O01, D39.2 La môle hydatiforme est une anomalie rare de la grossesse, définie par la prolifération kystique des villosités choriales associée à une dégénérescence… …   Wikipédia en Français

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