Abstract
We report a case of glomus tumor in a 69-year-old man with a lesion on his back. Histopathological examination showed that the tumor was composed of sheets of uniform cells with clear eosinophilic cytoplasm and oval nuclei. On immunohistological examination, vimentin and α-smooth muscle actin (α-SMA) stains were positive, while von Willebrand factor (vWF), and CD31 and CD34 stains were negative. Based on these findings, we diagnosed this lesion as glomus tumor proper. The tumor was resected together with a 1cm peripheral margin and deep margin including superficial fascia. Since the surgery, no recurrence has been observed for 1 year.
