Case Presentation Pericallosal lipoma with agenesis of corpus - - PowerPoint PPT Presentation

▶

Sep 13, 2022 324 likes •526 views

Case Presentation Pericallosal lipoma with agenesis of corpus callosum Dr. Anusha.R, 2 nd year post graduate, Department Of Radio- Diagnosis Clinical details 17 year old male patient was referred from Miryalguda to the department of Radio-

SLIDE 1

Case Presentation Pericallosal lipoma with agenesis

f corpus callosum
Dr. Anusha.R,

2nd year post graduate, Department Of Radio- Diagnosis

SLIDE 2

Clinical details

17 year old male patient was referred from Miryalguda to the department of Radio- Diagnosis for evaluation of seizures using MRI Brain.

SLIDE 3

Presenting complaints

Patient was suffering from seizure’s since childhood. Past history : No history of any head trauma, tuberculosis, diabetes, no history of any fever with rash or any other diseases. Addictions : no history of any smoking or alcohol consumption.

SLIDE 4

Investigations

Routine Haematological investigations were

unremarkable.

Chest X-ray showed normal study.
Ultrasound abdomen showed no sonological

abnormality.

All the above investigations were done outside.

SLIDE 5

MRI BRAIN FINDINGS

SLIDE 6

T1W Mid Sagittal image showing Complete absence of corpus callosum & absent cingulate gyrus.

Normal T1 Mid Sagittal image

SLIDE 7

T1 Para Saggital & axial showing hyperintense lesion in anterior pericallosal region

SLIDE 8

T1 Coronal - VIKING HELMET SIGN – pointed upturned lateral ventricles with high riding 3rd ventricle

SLIDE 9

T2 axial images showing parallel

rientation & widely separated lateral

ventricle – RACING CAR SIGN

SLIDE 10

T2 Axial Images show dilated occipital horns COLPOCEPHALY – RABBIT EAR SIGN

SLIDE 11

T2 STIR showing Fat suppression of anterior pericallosal lesion – suggestive of lipoma

SLIDE 12

SWI, Phase Contrast images show blooming & hyperintensity in the periphery of pericallosal lipoma- s/o calcification

SLIDE 13

Axial CT Brain showing fat density(-100 HU) lesion with peripheral calcification in anterior pericallosal region

SLIDE 14

CT Brain bone window - peripheral bracket shaped calcification

SLIDE 15

AP RADIOGRAPH SKULL - BRACKET SIGN

SLIDE 16

Imaging findings

MRI Brain : Complete absence of corpus callosum

Parallel, non converging lateral ventricles
Dilated occipital horns of lateral ventricles
T1,T2 hyperintense,Extra-axial lobular lesion seen

in the midline in the anterior pericallosal region with suppression on STIR sequences & peripheral blooming on SWI CT BRAIN :

extra- axial fat density lesion seen in midline in

anterior pericallosal region with peripheral calcifications with complete absence of corpus callosum.

SLIDE 17

Differential diagnosis: for pericallosal lipoma 1.Intracranial dermoid cyst : usually 20-30 HU, signal intensity is more heterogenous, no associated malformations, calcification is common 2.Intracranial teratoma: more heterogenous in appearance, show solid & cystic components, solid component shows contrast enhancement.

SLIDE 18

Final Diagnosis:

Tubulonodular variety of pericallosal lipoma with peripheral calcifications & complete agenesis of corpus callosum.

SLIDE 19