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Primer OB Differentials Radiology obstetrical

Terms

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Large Thick Placenta (>4cm) (5)
Hydrops
Maternal DM
Maternal anemia
TORCH
Intraplacental Hematoma
Small Placenta (4)
Maternal HTN
Toxemia
Severe DM
IUGR
Single Umbilical Artery (3)
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)
DW cmplx
Arachnoid cyst
mega cisterna magna
midline cystic structures (3)
cavum septum pellucidum
dorsal cyst in ACC
V. of Galem AVM
Hydrocephalus DDx (4)
Chiari II
DW complex
aqueductal stenosis
AGENESIS CC
Cystic Head/Neck Masses (7)
cystic hygroma
encephalocele
hemangioma
teratoma
branchial cleft cysts
thyroglossal duct cyst
umbilical cord around neck
Cystic Back Masses (2)
NTD
cystic teratoma
Hyperechoic Brain Masses (3)
Hematoma
Teratoma
Lipoma of CC
Incomplete skull mineralization (3)
OI
Achondroplasia
Hypophosphatasia
Lemon Sign (2)
Myelomeningocele
Encephalocele
Kyphoscoliosis (3)
Hemivertebra
butterfly vertebra
Complex anomalies (VACTERL, Limb-body-wall cmplx)
Cystic Thoracic Masses (4)
1. CDH
2. CCAM Type 1 or 2
3. Cysts-bronchogenic, enteric duplication, pericardial
4. Cystic Hygroma
Solid Thoracic Masses (5)
CDH
CCAM Type 3
Pulm Sequestration
Teratoma
Rhabdomyoma of the heart
Unilateral Pleural Effusion
CHD
CCAM
Sequestration
Hydrops Causes DDX
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
Hydrops
Infection
Chromosomal anomalies
Pulmonary lymphangiectasia
Double Bubble
Ladd's bands
Annular pancreas
Duo Atresia
Stensosis of the duodenum
Dilated Bowel
Atresia
Stenosis
Volvulus
Meconium Ileus
Enteric Duplication
Hirschsprung
Echogenic Bowel
1.Nl 2nd trimester variant (transient inspissation)
2.CF (most common)
3.Downs
4.IUGR
5.CMV
Abdominal Calcs
1. Bowel related: mec peritonitis, mec ileus, atresia, volvulus
2. Non-bowel: Renal, TORCH, Neuroblastoma, Teratoma, Fetal Gallstones
Hydronephrosis
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
simple cyst
PCLKD
Choledochal cyst/Caroli
Hamartoma (von myenberg cmplx)
Liver masses
Teratoma
Hepatoblastoma
Hemangioma
Hemangioendotelioma
Hamartoma
Splenomegaly
Rh immune hydrops
PROM
TORCH
Polydactyly
Trisomy 13/18
Meckel-Gruber
Jeune
Short-rib polydactyly

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