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Radiology
Abdominal Cysts
Built from Obstetric Imaging
What’s inside
9 sections · 106 slides
Overview
- What this deck covers
Where a fetal abdominal cyst comes from
Many organs, one black circle on the screen
- What we mean by a fetal abdominal cyst
- Which organs are the usual culprits
- The map of possible sources
- How to read the organ-system list
- Fetal Abdominal Cysts by Organ Systems
- Cysts found in the first trimester
Ovarian cysts
The commonest fetal abdominal cyst, and a hormone story
- Ovarian cyst: the basics
- Why the fetal ovary makes cysts
- How an ovarian cyst builds up
- How it shows up
- What it looks like on ultrasound
- Ovarian cyst next to the fetal kidney
- What to notice in that image
- Ovarian cyst with sediment after internal bleeding
- The classic ovarian cyst picture
- Does this need an MRI?
- What else could it be?
- One mimic that trips people up
- Ovarian cyst or duplication cyst?
- Ultrasound Criteria of an Ovarian Cyst Versus an Enteric Duplication Cyst
- Before birth: watch it or drain it?
- How follow-up is organised
- What the pooled data showed
- What the same analysis said about draining
- The 40 mm line in the newborn
- After birth: confirming and deciding
Enteric duplication cysts
A sealed second piece of bowel, glued to the real one
- Enteric duplication cyst: what it is
- How common, and in whom
- Why they form: theories, not answers
- What the pathologist actually sees
- Where they sit and how they behave
- What ultrasound shows
- Enteric duplication cyst beside the fetal stomach
- What to notice in that image
- Classic sign, and where MRI helps
- What else could it be?
- Management before birth
- What happens after birth
Mesenteric cysts and cystic lymphangioma
Lymph channels that never found an outlet
- Mesenteric cyst: what it is
- How common are they?
- How they present
- What ultrasound shows
- Normal small bowel mesentery and a mesenteric cyst
- The cyst as the surgeon sees it
- What to notice in the operative photograph
- Classic sign, and the MRI question
- What else could it be?
- Management
- When watching is a reasonable option
Urachal cysts
An embryonic tube that should have closed
- The urachus: a tube that should close
- Four ways the urachus fails to close
- The four patterns in words
- Where to look for one
- What ultrasound shows
- Two named signs worth knowing
- Urachal cysts on ultrasound
- Pelvic mass in a fetus with a patent urachus
- What else could it be?
- Management before birth
- Delivery, and the tests after birth
- Outlook
Hydrocolpos and hydrometrocolpos
A blocked outflow, and fluid with nowhere to go
- Hydrocolpos: the words first
- How the mass builds up
- How common, and when it shows
- Simple versus complicated disease
- Associations to look for
- What a persistent urogenital sinus brings with it
- What ultrasound shows
- Large cyst behind the bladder at 37 weeks
- Fluid-filled uterus and dilated colon at 30 weeks
- What to notice across those two cases
- Classic sign, and where MRI helps
- Mimics of a pelvic cystic mass (1 of 2)
- Mimics of a pelvic cystic mass (2 of 2)
- Management before birth
- After birth
Umbilical vein varix
Not a cyst at all - a vein that has ballooned
- Umbilical vein varix: what it is
- How common is it?
- Why it happens where it happens
- Diagnostic criteria
- Dilated umbilical vein inside the fetal abdomen
- What to notice in that image
- Isolated or not: the question that decides everything
- What the systematic review found
- Timing of diagnosis matters
- Prenatal management
- Surveillance and delivery
- After birth
Putting it together
Four clues, six lesions, one calm conversation
- The four clues, in order
- The six lesions at a glance
- Key points (1 of 2)
- Key points (2 of 2)
- Where fetal MRI actually earns its place
- What to tell the parents
- Suggested reading
- References
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- References (continued)
- Obstetric Imaging: Fetal Diagnosis and Care, 2nd Edition