History: 60 year old male undergoing chest CT for follow up of a lung mass.
This anatomical variant is referred to as a tracheal bronchus. When the entire upper lobe is supplied by the accessory bronchus, it is called a pig bronchus. An excellent article summarizing these anatomical variants is present here. These variant bronchi are seen in about 0.1-2% of the population, and typically arise from the right side of the trachea. They place the patient at risk for recurrent pneumonia in the lobe supplied by the accessory bronchus.
フェラガモ 財布 メンズ