Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As similar to multiple prior exams , there is a relative hazy density in the bilateral hilar regions with pulmonary vascular indistinctness . The hemidiaphragms are not well defined . The cardiomediastinal silhouette is markedly enlarged with widening superiorly and an enlarged cardiac silhouette inferiorly . The patient 's chin overlies the lung apices , limiting the evaluation . No gross pneumothorax is seen .
    OUTPUT:
    
Limited study due to body habitus . There are low lung volumes which result in bronchovascular crowding , but beyond that there is likely moderate pulmonary edema presumably cardiogenic in etiology . There may also be small bilateral pleural effusions .