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A. Intraoperative frozen section (HE × 50) the tumor consisted of the classic SP area (papillary structure, sclerosing area, hemangioma-like structure) and cytoplasmic epithelioid cell nest area. B. Intraoperative frozen section (HE × 100) the tumor with cytoplasmic epithelioid cell nest area. C. Intraoperative frozen section (HE × 400) the cytoplasmic epithelioid cell nest area of the tumor.
