This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
An alcoholic presents with chest pain due to aspiration pneumonitis. On examination there is dullness on percussion in area medial to the medial border of scapula on elevation of arm. Which pa of the lung is most likely to be affected? 
Select and explain. 
A. Right superior lower lobe, B. Right posterior lower lobe, C. Left superior lobe, D. Right apical lobe
A: Right superior lower lobe
Answer: A: Right superior lower lobe 
Explanation: Chest x-rays show consolidation in dependent pulmonary segments: in the basilar segments of the lower lobes if the patient has aspirated while upright and in either the posterior segment of the upper lobe (usually on the right side) or the superior segment of the lower lobe if the patient has aspirated while supine.