Substernal Troid Which Image Of The Right Upper Lobe Tumor

68-year –old male patient was being accepted from a special clinic to us with a presumed diagnosis of right upper lobe tumor .The patient has a respiratory distress,weight loss,palpitations. Mediastinal enlargement was seen in the upper right chest film. Thoracic computed tomography was noticed a mass nearly 5x7x3 size which connection with cervical area and deviated from outside the trachea,compressing right lobe anterobasal segment . Thyroid hormone tests were performed and showed hyperthyroidism .The patient took anthyroid agent only 1 month and then taken operation elective conditions .We performed operation with a general surgery cervical insision after parsial median sternotomy. Total troidectomy was performed, after the realised cervical troid upper side of neck and then tracheal , borned from intrathoracic component preserved vascular and paratroid structure.The specimen nearly 5x7x3 cm which called noduler collaidal guatr from the pathology .The patient was discharged without any problem by giving thyroid hormone.