“…Aggerwal et al [ 33 ] encountered a case of S100-positive T-PLL and decided to study more cases: 19 additional T-PLLs and 56 other T cell lymphomas that are usually CD4-positive, including 15 AITL, 24 ALCL, 7 mycosis fungoides/SS, and 10 T-NHL NOS. Thirty percent (6/20) of T-PLLs were S100-positive, compared with 0/56 other T cell lymphomas.…”