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Histopathology and immunohistochemical staining of synovial sarcoma.
(A) Spindled cells of similar appearance with hyperchromatic nuclei and sparse cytoplasm exhibiting a “blue” appearance with scant stromal collagen (20x H&E).
(B) Strong positive staining for CKAE1/3CAM.
(C) Weakly positive staining for CK7.
(D) Weakly positive staining for CD99.
(E) Positive staining for Bcl-2.
H&E, hematoxylin and eosin. (Color version of figure is available online.)
