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OBG · Normal pregnancy and antenatal care: Piskacek sign
Sample itemOn bimanual examination at 8 weeks, one cornu of the uterus bulges more than the other and the uterus feels asymmetrical. Which sign is this, and what explains it?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
A. Piskacek sign, from implantation near one cornu
Piskacek sign is a lateral, asymmetrical enlargement of the uterus when the blastocyst implants near a cornu. The uterus becomes symmetrical again as pregnancy advances. It is a probable sign of early pregnancy.
Option by option
A. Piskacek sign, from implantation near one cornu (correct)
Correct. Implantation near a cornu causes the asymmetrical bulge.
B. Hegar sign, from softening of the isthmus
Hegar sign is softening of the isthmus and does not make the uterus lopsided.
C. Goodell sign, from softening of the cervix
Goodell sign is softening of the cervix, found on speculum or vaginal examination.
D. Chadwick sign, from vascular congestion of the vagina
Chadwick sign is a bluish discolouration of the vagina and cervix from congestion.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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