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Craniosynostosis,.pptx
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9. (A) Patent right coronal; (B) Patent right lambdoid; (C) Synostotic sagital.
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11. (A) In a 2-day-old neonate, the metopic suture is wide, measuring approximately 5–8 mm. The
coronal suture is also wide
(B) By 13 months of age, the sutures are nearly completely closed (≤1 mm) and sclerotic.
12. (A) In a 6-week-old infant, the suture is wide, measuring approximately 5–8 mm. (B)By age 5
years, the suture is still relatively wide but demonstrates progressive narrowing.
Eighty-five percent of cases are nonsyndromic, and of these, 75%
are single-suture synostoses and nearly 60% of those are sagittal
synostosis.
Valproic acid,phenytoin, microcephaly, encephalocele,post ventricular shunting,
Scaphocephaly: Spare the skull base
Brachycephaly: Hypertelorism
Plagio: Ipsilateral exophthalmos
Lambdoidal: Least common ,Mastoid bulging
Positional plagiocephaly
Loss of normal hypoechoic area
Arrowhead: Sphenofrontal
Black arrows: Temporosquamous
White arrows: Lambdoidal
2 days vs 4 year old child
Triad
Axial and Sagittal T2 Fat Suppressed images
Enchondroma:
Cartilage based , rings and arcs pattern, lytic , metaphyseal
SAG T2
COR T1
SAGT1 and SAGT1+C
30 year old female with synovial sarcoma of the right knee.
ELBOW: SOFT TISSUE MASS (arrowhead), adjacent erosion (Small arrow)
Calcifications (Large arrow)
Knee: 12 year old asterix soft tissue mass, arrow - Clacifications
Calcified soft tissue mass at the elbow on xray and CT.
The mass is anterior to the anterior recess of the elbow, and lack of joint effusion is consistent with juxtaarticular but not intraarticular origin.
Asterix: Altered areas corresponding to the calcifications
Arrowhead: Lesion
Psudocapsular appearance on t1wi mri
AXT2
37 year old in tibia and near ankle joint.
H- HIGH L LOW
Arrows Cortical erosions
Arrowheads – Fluid levels
SAG T1 FAT SUPRESSED POST CONTRAST
Asterix : solid viable region
H: Hemorrehagic regions
Arrowhead: Septa