✓ Intramedullary spinal cord surgery can disrupt the blood—spinal cord barrier and cause intravascular contents to leak into the surgical cavity. Immediate postoperative Gd-enhanced magnetic resonance (MR) imaging can demonstrate leakage of contrast into the surgical bed and complicate the assessment of whether a residual enhancing tumor is present. The authors report a case in which the preoperative lesion was nonenhancing and not expected to enhance on postoperative imaging. A Gd-enhanced MR imaging study obtained less than 24 hours after surgery revealed that the intramedullary surgical cavity was filled with contrast material. Because of the time course and the lesion's preoperative appearance, this “enhancement” was known to be caused by the leakage of medium into the resection cavity rather than of pathological soft-tissue enhancement
Matthew Walker, Saquib Khawar, Ali Shaibani, Sireen Reddy, Aruna Ganju and Manu Gupta
John K. Hopkins, Ali Shaibani, Saad Ali, Saquib Khawar, Richard Parkinson, Stephen Futterer, Eric J. Russell and Christopher Getch
✓The authors report a unique case of subarachnoid hemorrhage caused by a traumatic pseudoaneurysm of the ophthalmic artery, which was successfully treated with coil embolization. Clinical and imaging features, as well as the relevant literature, are described.