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Pediatric Nasofrontal Mass
A 5-month-old girl with a facial mass. Ax, axial; CT, computed tomography; FS, fat saturated; Sag, sagittal.
A 1-day-old male infant with a nasofrontal mass. Ax, axial; Sag, sagittal.
A 5-month-old girl with a palpable lesion in the region of the glabella. FS, fat saturated; Sag, sagittal.
DESCRIPTION OF FINDINGS
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Case A: Axial and sagittal contrast-enhanced CT images demonstrate a nasal dermoid at the nasal tip with extension into the nasal septum and a dermal sinus tract extending through the foramen cecum to an intracranial dermoid. A sagittal T2 image demonstrates T2 hyperintensity within the dermoid, and sagittal and axial postcontrast images demonstrate peripheral enhancement around the intracranial dermoid.
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Case B: Sagittal and axial T1 MRI show a large frontal encephalocele with brain contents and meninges extending through an inferior frontal skull defect. Hydrocephalus is evident.
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Case C: A small ovoid lesion is noted at the glabella. Signal characteristics are similar to those of brain parenchyma without evidence of enhancement or fat signal intensity.
Diagnosis
CaseA
Dermoid with dermal sinus and intracranial extension
CaseB
Frontal encephalocele
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