Dorsal dermal sinus with filum terminale lipoma

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Low lumbar skin tag since birth.

Patient Data

Age: 11 years
Gender: Male

Dorsal dermal sinus tract at the lumbosacral region, extending from the skin surface to the spinal canal through a widened L5-S1 interspinous space. The conus medullaris terminates at L2/3 intervertebral disc level (considered as a normal variant) with a filum terminale lipoma.

Case Discussion

MRI features of a dorsal dermal sinus at the lumbosacral region with associated lipoma of the filum terminale.

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