I'm really worried about my sister. Shes been having chest pain and her X-ray came back showing some inhomogeneous opacity in the lower zone. It mentions something about infiltration. Could you explain what this means and what our next steps should be? What can we do to resolve this?

The X-ray report indicating inhomogeneous opacity in the lower zone with infiltration suggests a possible pulmonary infection or inflammation; next steps should include: consulting a pulmonologist or chest specialist, undergoing a CT scan or HRCT for better imaging, and getting blood tests (CBC, ESR, CRP) to confirm the diagnosis and guide treatment, which may involve antibiotics, anti-inflammatory medications, or further investigations.