Hypothalamic hamartoma | Figure 1
CincyKidsRad
Cincinnati Children's Radiology
Hypothalamic hamartoma
Axial FLAIR (image 1) and sagittal T1 FLAIR MRI images show a hypothalamic hamartoma (arrow). Patients with these lesions classically present with gelastic or laughing seizures. Hypothalamic hamartomas may also cause symptoms such as precocious puberty or behavioral and cognitive difficulties. On imaging, hypothalamic hamartomas are isointense to gray matter on T1-weighted images and hyperintense on T2-weighted images, without enhancement after contrast administration.
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