TNFRSF8 and lymphoma: Accordingly, the detection rate of CD30 via FCM alone was lower than that through immunohistochemistry, and false positives could occur occasionally; however, to take advantage of factors, such as the rapidity of FCM results, semi-quantitative IR pattern, and an index for performing immunohistochemistry, the use of FCM in determining the immunological phenotype of malignant lymphoma is important for evaluating CD30 expression.