9Warnakulasuriya K A,Robinson D,Evans H.Multiple primary turnouts following head and ne-ck cancer in southern England during 1961-98[J].Oral PatholMed,2003; 32 (8):443-449.
7Rennemo E, Zatterstrom U, Boysen M. Impact of second primary tumors on survival in head and neck cancer: an analysis of 2 063 cases [ J ]. Laryngoscope ,2008,118 ( 8 ) : 1350-6.
8Angurana SL, Kapoor R, Kumar P, et al. Quadruple malignancy in a single patient: a case report and comprehensive review of literature[ J ]. J Cancer Res Ther, 2010,6(2) :230-232.
9Brown AP, Chen J, Hitchcock YJ, et al. The risk of second primary malignancies up to three decades after the treatment of differentiated thyroid cancer [ J ]. J Clin Endoerinol Metab,2008,93 ( 2 ) :504-515.
