Hello, welcome to the Ask a Doctor service. If you d told me that your husband had fever then this X-ray would have suggested pneumonia. If he has no signs of active infection (like a fast heart rate, fatigue, sleepiness, more breaths per minute than usual, shortness of breath, etc) then other causes may be more likely. Hazy densities with air-bronchograms means that there are areas of abnormal tissue in the lungs (in the lingula in particular, which is the middle part of the left lung). Abnormal tissue may be the result of inflammation (infectious or other type), atelectasis (collapsed part of the lung) or tumor. The obliterated sulcus may be a result of inflammation (infection mostly), presence of tumor or as thickening that had occurred after an inflammatory process (something like a scar in the lung). So in conclusion, the x-ray cannot be interpreted without the relevant clinical context. Weight loss is not a very specific symptom. Lack of other symptoms may point towards the diagnosis of malignant processes but nothing can be told with confidence at this point. A CT scan of the lungs may provide additional clues. I have to repeat that the clinical information is the most important part that s required for an accurate interpretation of any test, including the X-ray. I hope I ve answered your question. Please let me know if you need further assistance. Kind Regards!