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Updated: Nov 25, 2025

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
Sphenofrontal intradiploic dermoid cyst with cutaneous dermal sinus tract
Jeremy Hatcher1, Asha Sarma2, Rachel Sobel3
1Vanderbilt University School of Medicine, Nashville, Tennessee.
Abstract:
We report the case of a 5-year-old boy who presented with a draining cutaneous pit temporal to the lateral canthus, with recurrent periorbital infections. MRI and CT revealed a sinus tract leading from the pit at the skin surface to a 5 mm lesion located in the sphenoid bone near the left sphenofrontal suture. Intraoperative facial nerve monitoring and a lacrimal probe inside the sinus tract were used to guide dissection to the cyst through a minimally invasive temporal approach, without need for neurosurgical intervention.
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