Hepatic Mesenchymal Hamartoma
Joseph Junewick, MD FACR
over 7 years ago
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Heather Borders, MD
|Diagnostic Category: Developmental or Congenital
|Created: over 7 years ago
|Updated: over 7 years ago
Four year old male who fell off of the jungle gym. Presented to ED and had a head CT which demonstrated “hemorrhage”. Follow up MRI was performed to assess for AVM.
Left frontoparietal cavernoma
Left frontoparietal mildly heterogeneous tubular shaped lesion extending from the ventricle to the brain surface. On T2 there are multiple small hyperintense foci with peripheral hypointensity. On gradient echo there is significant blooming. MRA was normal.
Cavernoma is a collection of vascular spaces; dilated capillary beds containing blood products in various stages. Adjacent arteries and veins are usually normal. These may be multiple in the familial form.
CT features include a mildly hyperdense mass with or without calcification with mild enhancment. MRI features include a sharply marginated mass with no surrounding edema. The lobules will have variable signal intensity. Gradient echo will show blooming related to blood products and prior hemorrhage and are useful to look for additional lesions.
Possibly associated with a venous malformation.
Barkovich, Pediatric neuroimaging.