what does it mean or what's the possible reason why the doctor should ask apocolordotic view when the finding was "suspicious hazziness is noted in the right apex..? what could be the worst case..?
The apicolordotic view is just another x-ray from a different angle to better image the tops (apex) of the lungs. By itself it means little. It's very common for this to happen due to artifacts on the film - nothing wrong at all.
If they do find something after the apicolordotic view you'd be likely to require a sputum analysis or biopsy.
Worst case, you have an infection like TB or even lung cancer (remote).