5Hedayati N, Mc Henry CR. The clinical pres- entation and operative management of nodular and diffuse subtemal thyroid disease. Am - Surg,2002,68 ( 3 ) :245 - 251.
6Ben Nun A, Soudaek M, Best LA, et al. Retro- sternal thyroid goiter: 15 years experience. Isr Med Assoc ,2006,8(2) : 106 - 109.
