Primer OB Differentials Radiology obstetrical
Terms
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- Large Thick Placenta (>4cm) (5)
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Hydrops
Maternal DM
Maternal anemia
TORCH
Intraplacental Hematoma - Small Placenta (4)
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Maternal HTN
Toxemia
Severe DM
IUGR - Single Umbilical Artery (3)
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Trisomy 13/18
Structural anomalies -
Abnormal
Supratentorial Cystic Structures (6) -
Choroid Plexus Cysts
Hydrocephalus
Porencephaly
Holoprosencephaly
Arachnoid cyst
Teratoma - Abnormal Post Fossa Cystic Structures (3)
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DW cmplx
Arachnoid cyst
mega cisterna magna - midline cystic structures (3)
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cavum septum pellucidum
dorsal cyst in ACC
V. of Galem AVM - Hydrocephalus DDx (4)
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Chiari II
DW complex
aqueductal stenosis
AGENESIS CC - Cystic Head/Neck Masses (7)
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cystic hygroma
encephalocele
hemangioma
teratoma
branchial cleft cysts
thyroglossal duct cyst
umbilical cord around neck - Cystic Back Masses (2)
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NTD
cystic teratoma - Hyperechoic Brain Masses (3)
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Hematoma
Teratoma
Lipoma of CC - Incomplete skull mineralization (3)
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OI
Achondroplasia
Hypophosphatasia - Lemon Sign (2)
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Myelomeningocele
Encephalocele - Kyphoscoliosis (3)
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Hemivertebra
butterfly vertebra
Complex anomalies (VACTERL, Limb-body-wall cmplx) - Cystic Thoracic Masses (4)
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1. CDH
2. CCAM Type 1 or 2
3. Cysts-bronchogenic, enteric duplication, pericardial
4. Cystic Hygroma - Solid Thoracic Masses (5)
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CDH
CCAM Type 3
Pulm Sequestration
Teratoma
Rhabdomyoma of the heart - Unilateral Pleural Effusion
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CHD
CCAM
Sequestration - Hydrops Causes DDX
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1. Rh-neg Mom with Rh-positive fetus (10%)
2. Arrhytmias/Cong heart defect (25%)
3.Turners
4.Downs
5.Twin-twin transfusion
6.TORCH
7.Other anomalies - Bilateral Pleural Effusions
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Hydrops
Infection
Chromosomal anomalies
Pulmonary lymphangiectasia - Double Bubble
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Ladd's bands
Annular pancreas
Duo Atresia
Stensosis of the duodenum - Dilated Bowel
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Atresia
Stenosis
Volvulus
Meconium Ileus
Enteric Duplication
Hirschsprung - Echogenic Bowel
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1.Nl 2nd trimester variant (transient inspissation)
2.CF (most common)
3.Downs
4.IUGR
5.CMV - Abdominal Calcs
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1. Bowel related: mec peritonitis, mec ileus, atresia, volvulus
2. Non-bowel: Renal, TORCH, Neuroblastoma, Teratoma, Fetal Gallstones - Hydronephrosis
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UPJ obstruction
UVJ obstruction (megaureter)
Duplicated collecting system
Bladder outlet obstruction
Male:PUV, Prune-Belly
Female:caudal regression, ectopic ureterocele, ureteral agenesis - Liver Calcs
- TORCH
- Liver cysts
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simple cyst
PCLKD
Choledochal cyst/Caroli
Hamartoma (von myenberg cmplx) - Liver masses
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Teratoma
Hepatoblastoma
Hemangioma
Hemangioendotelioma
Hamartoma - Splenomegaly
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Rh immune hydrops
PROM
TORCH - Polydactyly
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Trisomy 13/18
Meckel-Gruber
Jeune
Short-rib polydactyly