Final answer:
The assessment findings and additional clinical context suggest pneumonia in the left middle lobe and possible pleural effusion or atelectasis in the left lower lobe.
Step-by-step explanation:
The assessment findings of lung sounds being absent in the left lower lobe (LLL) and very diminished in the right lower lobe (RLL) with a dull thud upon percussion over the left middle lobe suggest a couple of possible respiratory conditions. The absence or significant reduction in lung sounds can indicate fluid or consolidation within the lobes, while the dull sound upon percussion can be indicative of pleural effusion or pneumonia due to fluid accumulation or consolidation.
Given the additional context of a chest radiograph showing a 'shadow' in the left lung, consistent with findings for pneumonia where X-ray images reveal opacities as white areas due to fluid-filled pockets, and the clinical symptoms such as hypoxemia, crackling lung sounds, and greenish sputum, the most likely diagnosis would be pneumonia in the left middle lobe and possibly atelectasis or pleural effusion in the left lower lobe.
Correct Answer Choices:
- Pneumonia in the left middle lobe
- Pleural effusion in the left lower lobe