Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . Nipple shadow projects over the left lung base . There is no edema or effusion . Incidentally noted is an azygos fissure . In addition to that , there is increased soft tissue density in the right right upper mediastinum without clear delineation of the peritracheal stripe . This appearance is similar compared to the multiple priors . There is increased There is tortuosity of the descending thoracic aorta .
    OUTPUT:
    
No acute cardiopulmonary process . Increased soft tissue density at the upper right aspect of the mediastinum . This is unchanged compared to multiple priors but is incompletely characterized . Differential considerations include right - sided thyroid enlargement , although there is no deviation of the trachea to the left , or toward tortuosity of the great vessels . Underlying mass lesion or adenopathy would also be possible . Additional imaging can be performed as clinically warranted .