 The proximal subsegmental pulmonary arteries are free of embolus, but the distal subsegmental and segmental arteries especially on the right are limited by extensive pulmonary parenchymal, findings would be discussed in more detail below. 
The proximal subsegmental pulmonary arteries are free of embolus , but the distal subsegmental and segmental arteries especially on the right are limited by extensive pulmonary parenchymal , findings would be discussed in more detail below .