摘要
To the editor： A 97-year-old female was admitted to the local hospital on June 12th, 2010. She complained of suffering an asthma-like breathing difficulty for about 3 months and it was getting worse for the last 10 days. Computed tomography （CT） scan showed an isolated lesion in main branch of the trachea （Figure 1A）. Considering the complexity of the case, the patient was transfered to our hospital. Ultrasound showed that the size of the fight thyroid increased, consistent with non-uniform density and abundant blood flow. The results of lab examination of thyroid function were normal.
To the editor： A 97-year-old female was admitted to the local hospital on June 12th, 2010. She complained of suffering an asthma-like breathing difficulty for about 3 months and it was getting worse for the last 10 days. Computed tomography （CT） scan showed an isolated lesion in main branch of the trachea （Figure 1A）. Considering the complexity of the case, the patient was transfered to our hospital. Ultrasound showed that the size of the fight thyroid increased, consistent with non-uniform density and abundant blood flow. The results of lab examination of thyroid function were normal.
