CALB2 and sex cord-stromal tumor: The typical immunophenotypes of sex cord tumors include positivity for inhibin-α, calretinin, SF1, WT1, CD56, and CD99, with variable positivity for several other markers, such as hormone receptors, smooth-muscle actin, desmin, and CD10; Melan-A/MART1 is typically positive in Leydig cells and in steroid cell tumors [1,2].