Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Examination is limited secondary to patient 's body habitus . Compared with prior exam , there is a vague opacity in the right cardiophrenic angle . Otherwise , a linear opacity within the peripheral left mid lung is unchanged and corresponds to scarring . Although low lung volumes and overlying soft tissue attenuation increase the conspicuity of the interstitial markings , it is felt that chronic vascular congestion and interstitial edema are present and not significantly changed compared with multiple prior radiographs dating back to ___ . No pleural effusion is identified . There is no pneumothorax . Mediastinal and hilar contours are within normal limits . Mild apparent enlargement of the cardiac silhouette is likely due to AP technique .
    OUTPUT:
    
1 . Vague opacity in the right cardiophrenic angle may represent a focus of consolidation although imaging artifact can not be excluded in this very limited exam owing to the patient 's body habitus . If there is clinical concern , further assessment with CT is recommended . 2 . Stable appearance of the lung interstitium suggestive of chronic vascular congestion and borderline edema .