E N Tabor1, U Batzdorf. 1. Division of Neurosurgery, University of California Los Angeles, School of Medicine, USA.
Abstract
OBJECTIVE AND IMPORTANCE: We describe a unique presentation of a thoracic spinal Pantopaque cyst. Although Pantopaque is no longer used, sequelae of its long-term use may continue to surface. CLINICAL PRESENTATION: Our patient presented to the emergency room with 4 months of progressive lower extremity numbness, spasticity, and incontinence and a 2-day history of left upper extremity dysesthesias. Magnetic resonance imaging at admission revealed a C7-T10 syrinx and an intrathecal extramedullary mass to the right of the spinal cord at T10-T11. INTERVENTION: Radiographic evidence led to the initial diagnosis of hemangioblastoma. The results of a critical analysis of the preoperative studies caused us to suspect a Pantopaque cyst. This suspicion was confirmed at the time of surgery, when a cyst filled with contrast medium was revealed. T9-T11 laminectomies were performed, allowing for a 5-cm dural opening. The cyst was aspirated and excised, and then the syrinx was decompressed. CONCLUSION: Our patient experienced significant sensory and motor improvement postoperatively. We present a previously undescribed complication of one of the most commonly used contrast media, Pantopaque. Despite its replacement with newer agents, it may continue to play a significant role in the pathological presentation of patients in whom it was previously used.
OBJECTIVE AND IMPORTANCE: We describe a unique presentation of a thoracic spinal Pantopaque cyst. Although Pantopaque is no longer used, sequelae of its long-term use may continue to surface. CLINICAL PRESENTATION: Our patient presented to the emergency room with 4 months of progressive lower extremity numbness, spasticity, and incontinence and a 2-day history of left upper extremity dysesthesias. Magnetic resonance imaging at admission revealed a C7-T10 syrinx and an intrathecal extramedullary mass to the right of the spinal cord at T10-T11. INTERVENTION: Radiographic evidence led to the initial diagnosis of hemangioblastoma. The results of a critical analysis of the preoperative studies caused us to suspect a Pantopaque cyst. This suspicion was confirmed at the time of surgery, when a cyst filled with contrast medium was revealed. T9-T11 laminectomies were performed, allowing for a 5-cm dural opening. The cyst was aspirated and excised, and then the syrinx was decompressed. CONCLUSION: Our patient experienced significant sensory and motor improvement postoperatively. We present a previously undescribed complication of one of the most commonly used contrast media, Pantopaque. Despite its replacement with newer agents, it may continue to play a significant role in the pathological presentation of patients in whom it was previously used.
Authors: John D Heiss; Kendall Snyder; Matthew M Peterson; Nicholas J Patronas; John A Butman; René K Smith; Hetty L Devroom; Charles A Sansur; Eric Eskioglu; William A Kammerer; Edward H Oldfield Journal: J Neurosurg Spine Date: 2012-09-07