<prompt> A thoracic surgeon removed the right middle lobar secondary bronchus along with lung tissue from a 57-year-old heavy smoker with lung cancer. Which of the following bronchopulmonary segments must contain cancerous tissues?,Medial and lateralAnterior and posteriorAnterior basal and medial basalAnterior basal and posterior basal  <response>: The right middle lobar secondary bronchus leads to the medial and lateral bronchopulmonary segments in middle lobe of right lung . RIGHT lung contains two fissures and 3 lobes -Superiorupper, Middle and Inferior lower LOBES SEGMENTS Right upper lobe Apical segment Anterior segment Posterior segment Middle lobe Lateral segment Medial segment Lower lobe Apical segment Anterior basal Posterior basal Medial basal Lateral basal 