Assertion: goiter | /r/CapableOf | extend toward posterior mediastinum
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Source sentences:
text: Some investigators have identified that the rate of sternotomy was higher among patients with RSG whose goiter was below the lower limit of the aortic arch or extended toward the posterior mediastinum, or in the presence of ectopic mediastinal goiter , recurrent goiter or malignancy adhered to mediastinal structures (13-15,19).