Ewing's sarcoma of the facial zygomatic area bones in a young child: a case presentation

Ewing’s Sarcoma of the Zygoma: A Very Rare Location

Ewing's sarcoma is a rare and aggressive neoplasm that typically affects the long bones. The presence of a primary tumor in the facial bones is extremely uncommon. Here, we present a case of a 21-year-old male with Ewing's sarcoma of the zygoma. To date, only a few such cases have been reported worldwide in the literature.

Ewing's sarcoma of zygoma

Ewing's sarcoma is a malignant, small, round cell neoplasm that normally affects the long bones of the limbs or the pelvis. It is a relatively frequent malignant bone tumor in children. The occurrence of the primary tumor in the facial region is approximately 2%, with most of the cases affecting the mandible. Primary zygoma involvement is rare and as per the available literature only three cases have been reported.

A case of Ewing's sarcoma that originated in the zygoma of a 15-year-old girl in reported. Bearing in mind its neuroectodermal origin, immunohistochemical studies are essential to distinguish Ewing's sarcoma from other small round cell tumors.

Ewing's Sarcoma of the Zygomatic Arch Presenting in a 69-Year Old: An Unusual Case Report

Objective. We report a rare case of Ewing's sarcoma of the zygomatic arch presenting in a 69-year-old patient. Method. Case report and a review of the world literature on Ewing's sarcoma incidence and management. Results. Ewing's sarcoma is a malignant round cell tumour of neuroectodermal origin that typically presents in the pelvis and long bones of children and adolescent boys. This report is the first to document the presentation of ewing's sarcoma of the zygomatic arch in a 69-year-old lady. Our patient underwent surgical excision and radiotherapy and at 4-year followup has no signs of recurrence or metastasis. Conclusion. To our knowledge this is the first case report to document Ewing's sarcoma of this location in a 69-year-old patient. This case report highlights the importance of diagnostic investigations in Ewing's sarcoma and discusses the management issues that this rare presentation raises.

Ewings sarcoma of the zygoma reconstructed with a gold prosthesis: a rare tumor and unique reconstruction

INTRODUCTION

Ewings sarcoma (ES) is a rare tumor, most commonly encountered within the long bones during the first 20 years of life.

CASE REPORT

We report the sixth case of ES of the zygoma, occurring in a 31-year-old male, and presenting a unique reconstructive opportunity. Diagnosis and preoperative planning were aided by CT/MR coregistration. Surgical reconstruction using 3D reconstructed CT images to produce an anatomically correct model provided the basis for a gold prosthesis construction.

DISCUSSION

Delayed definitive reconstruction provided opportunity for adequate tumor recurrence surveillance, and definitive histological diagnosis. The artefact produced on MR imaging from gold implants is minimal, permitting the unrestricted identification of potential future recurrence.

CONCLUSION

This case highlights the benefits of coregistration of radiological imaging, and custom-made gold prostheses providing the advantage of artefact-free MR imaging, which should be considered in patients requiring resection of zygomatic tumors and subsequent reconstruction.