A Case of Malignant Schwannoma in the Ulnar Nerve

ABSTRACT

We have recently experienced a case of malignant schwannoma in the right ulnar nerve. A 17 years old male underwent a surgery with a total removal of malignant schwannoma of the right ulnar nerve in the elbow. The tumor mass was walnut size with infiltration to the adjacent structures. The pathological findings show the pattern of interlacing bundles of long spindle cells, plumper hypochromatic elongated or serpentile and eosinophilic nuclei with process and frequent mitosis, loss of cellular polarity and polymorphism can be seen. Pathological diagnosis was malignant schwannoma. Approximately 4 months later his initial operation, the tumor recurred at right elbow and axillary region and removed without any proper treatment.