Reconstruction of a Thoracic Spine Epithelioid Hemangioendothelioma with Antibiotic Impregnated Poly-methyl Methacrylate: A Case Report

Abstract

A 58-year-old female presented to the hospital with respiratory distress several days after a right hallux amputation. A new lytic lesion within the fourth thoracic (T4) vertebral body and mediastinal lymphadenopathy was noted on chest computed tomography scan. A bone biopsy was performed, revealing bone and collagenous fragments only. Two months later, new imaging revealed approximately 60% lytic destruction of the T4 vertebral body with new right pedicle involvement. Surgical treatment was offered. Intraoperative frozen pathology indicated a hemangioma. An intralesional debulking and stabilization was performed. The right T4 nerve was sacrificed to gain access to the entire vertebral body. Curettage was then used to push the tumor away from the spinal canal into the vertebral body. The spine was reconstructed with 5-10mm beads of Simplex P bone cement (Stryker®, Kalamazoo, MI) which contained 40 grams of poly-methyl methacrylate and 1 gram of tobramycin. Five months after resection, the patient presented with computed tomography and magnetic resonance imaging findings of recurrent disease at T4 and spread to the adjacent T5 vertebral body with lytic changes. At 18 months following her second debulking surgery and radiation treatment, the patient was doing well with no pain or numbness. Long-term imaging compared to the patient's preoperative imaging displayed improvement in spinal debulking with minimal residual enhancement of tumor despite significant artifact.