CCSTACanadian Catholic School Trustees Association
CCSTAClear Cell Sarcoma of Tendons and Aponeurosis (radiology)
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On cytologic specimens of CCSTA, features include cohesive groups of varied cellularity that may show 3-dimensional clustering and pseudoacinar structures mimicking adenocarcinoma, admixed with dispersed single cells.
Immunohistochemical studies of CCSTA show that the tumor cells express antigens associated with melanin synthesis including diffuse cytoplasmic immunoreactivity with HMB-45 (Figure 3), nuclear and cytoplasmic immunoreactivity to S100 protein (Figure 4), and reactivity with the microphthalmia transcription factor.
The EWSRI gene rearrangement has been detected in 70% to 90% of CCSTA.