Why is the upper lobe nodule worse than the lower lobe?

It is not absolute that upper lobe nodules are worse than lower lobe nodules; although there are some statistics showing that upper lobe nodules are more likely to be malignant than lower lobe nodules, it is also necessary to combine other characteristics of lung nodules and the characteristics of patients themselves. If the diameter of lung nodules is relatively large, the possibility of lung nodules being malignant will be relatively increased. If the pulmonary nodule shows some malignant signs, such as lobulation, spiculation, pleural traction and other related signs, it also indicates that the malignant possibility of pulmonary nodule is relatively high.