Items tagged “first trimester”

12 results found
Article

Missed miscarriage

A missed miscarriage, sometimes termed a missed abortion 3, is a situation when there is a non-viable fetus within the uterus, without symptoms of a miscarriage.   Radiographic features Ultrasound Ultrasound diagnosis of miscarriage should only be considered when either a mean gestation sac d...
Article

Yolk sac

Yolk sac is the first anatomical structure identified within the gestational sac. It plays a critical role in embryonal development by providing nutrients, serving as the site of initial hematopoiesis, providing endocrine, metabolic and immunological functions and contributing to the development...
Article

Fetal heart beat

Fetal heart beat can be detected as early as 34 days (just under 6 weeks) gestation on good quality, high frequency transvaginal ultrasound, as a crown rump length (CRL) of as little as 1-2 mm. If a fetal heartbeat cannot be identified with a CRL ≥7 mm using transvaginal scanning, then embryona...
Case

Failed early pregnancy

 Diagnosis certain
Dr Bruno Di Muzio
Published 05 Aug 2010
94% complete
Ultrasound
Article

Complete hydatidiform mole

Complete hydatidiform mole (CHM) is a type of molar pregnancy and falls at the benign end of the spectrum of gestational trophoblastic disease.  Epidemiology CHM is the commonest type of gestational trophoblastic disease. Pathology Complete moles are characterized by the absence of a fetus o...
Article

Pregnancy of unknown location

The term pregnancy of unknown location is assigned when neither an intrauterine pregnancy (IUP) or an ectopic pregnancy is identified on transvaginal ultrasound in the context of a positive pregnancy test. Clinical presentation pelvic pain, vaginal bleeding positive pregnancy test Pathology ...
Case

Subchorionic hemorrhage

 Diagnosis probable
Dr Abhijit Chikhlikar
Published 29 Dec 2012
54% complete
Ultrasound
Article

Calcified yolk sac

A calcified yolk sac has been described as a sign of intrauterine demise. The cause of yolk sac calcification in failed pregnancies is uncertain but is likely related to dystrophic calcification. Radiographic features Ultrasound abnormal increased echogenicity of the yolk sac with posterior a...
Case

Amniotic membrane

 Diagnosis certain
Dr Matt A. Morgan
Published 12 Jun 2015
82% complete
Annotated image
Case

Fetal rhombencephalon

 Diagnosis almost certain
Dr Matt A. Morgan
Published 12 Jun 2015
66% complete
UltrasoundAnnotated image
Article

Echogenic yolk sac

An echogenic yolk sac is an indeterminate finding in first-trimester fetal ultrasound. It differs from a calcified yolk sac, in that the contents of the yolk sac are echogenic, not just the rim. One study has suggested that this finding is associated with fetal demise, but other reports in the ...
Case

Fetal rhombencephalon

There is a promin...
 Diagnosis almost certain
Dr Matt A. Morgan
Published 15 Jun 2015
69% complete
UltrasoundAnnotated image

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.