[A case report of eosinophilic funiculitis difficult to distinguish from incarceration of inguinal hernia].

A 45-year-old man visited our emergency room with left inguinal pain, mass and high-grade fever. Emergency surgery was performed with a primary diagnosis of left inguinal hernia. Although there was no hernia, there was a mass involving the spermatic cord in the left inguinal canal. We performed high orchiectomy because of the possibility of malignancy. Pathological findings showed eosinophilic infiltration in the mass lesion. An allergic inflammation was suspected to have occurred in the spermatic cord. His postoperative course was good.