[Pathologic and immunohistochemical study of 11 patients with malignant lymphoma of the gonad].

We report 11 cases of malignant lymphoma of the gonad collected during the past 31 years in our hospital. 8/11 cases conformed well to Fox's criteria for primary gonadal malignant lymphoma. Clinically, they often manifest as a mass in the gonad without any symptoms. Histologically, diffuse NHL of intermediate or high malignancy was observed. According to morphologic criteria of the working formulation in combination with the immunohistochemical study, five cases were designated as T-cell lymphoma. This frequency in Chinese is different from that reported in the western countries.