Fig. 2From: Primary diffuse large B cell lymphoma arising from a leiomyoma of the uterine corpusImmunohistochemical findings of primary DLBCL arising from a leiomyoma of the uterine corpus. Most lymphoid cells are positive for CD20 (a) and PAX5 (b). The proliferative index is high (approximately 50 %) (c). Smooth-muscle cells are positive for caldesmon (d). (A: CD20 stain, B: PAX5 stain, C: Ki-67 stain, D: caldesmon stain; A, B: O.M., 200×; C, D: O.M., 100×)Back to article page