Scalp lump in the midline. Soft and compressible. Present since birth.
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Soft tissue scalp mass with associated flow voids in vascular structures and connection with the dural venous sinuses.
The scalp mass is clearly demonstrated on the MRI. It is a soft tissue mass that contains vessels that demonstrate flow void on T2 weighted sequences and enhance following contrast.
Features here are of sinus pericranii, an extra-cranial venous malformation that results from abnormal transosseous venous connections.