BACKGROUND Undifferentiated embryonal sarcoma of the liver(UESL)is a rare liver malignancy originating from primary mesenchymal tissue.The clinical manifestatio
BACKGROUND Perivascular epithelioid cell tumor(PEComa)is a rare mesenchymal tumor that exhibits an epithelioid and spindle cell morphology.The tumor is characte
BACKGROUND Neoadjuvant chemoradiotherapy(NACRT)has not been accepted as a general therapy for gastric cancer because of its localized effect and toxicity for ra