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多原发癌(multiple primary carcinoma,MPC)系指机体不同部位、器官同时或不同时发生2种或2种以上的原发性恶性肿瘤,包括交界肿瘤。MPC
Multiple primary carcinoma (MPC) refers to two or more primary malignancies, including borderline tumors, occurring at different parts of the body and organs simultaneously or not. MPC