An 83-year-old patient is admitted to hospital for surgery following a right neck of femur fracture. On day 7 post-op she becomes hypoxic, dyspnoeic and tachycardic, necessitating urgent medical review.  On examination, she has dullness to percussion in the right mid-anterior and right mid-lateral lung fields and reduced bilateral breath sounds.  An urgent chest X-ray is performed (shown below).

Based on the clinical information and the chest X-ray provided, what lobe(s) of the lung is(are) affected?

Source: Sorrentino S, Pneumonia - right middle lobe. Case study, Radiopaedia.org (Accessed on 27 Mar 2023) https://doi.org/10.53347/rID-14979