A Case of Solitary Fibrous Tumor of the Anterior Neck

Abstract

We report herein on a rare case of a solitary fibrous tumor in the anterior neck. A 45-year-old man visited our hospital with the chief complaint of a mass of the anterior neck. CT scan and MRI revealed that the inside of the tumor had a solid pattern. Fine needle aspiration cytology showed no malignant cells. Because the tumor had increased in size compared to the CT findings of 7 years previously, we removed the tumor. Based on the pathological examination, the tumor was diagnosed as a solitary fibrous tumor. Immunohistochemical staining was positive for CD34, vimentin, and the NAB2-stat6 fusion gene. Solitary fibrous tumors originated from the anterior neck have been relatively rare.