"The right upper lobe (RUL) is one of three lobes in the right lung. It is separated from the right lower lobe by the oblique fissure and the middle lobe by the horizontal fissure and subdivided into three bronchopulmonary segments."
"The lateral part of the posterior segment of the right upper lobe is called the axillary subsegment."
"Pancoast tumour"
Expected headings
"Location and structure"