“…(5) However, technical problems, such as X-ray beam underpenetration and inadequate centralization, compromise the quality of the exam, which may result in nonspecific imaging features described as hypolucency or opacity. [3][4] Specific radiological features may appear on a chest radiograph and may affect a lobe, a segment or the entire lung 5 . Hypolucency, which may indicate pulmonary edema, bleeding, atelectasis, or consolidations, is another radiological characteristic that is commonly seen on the chest X-rays of premature infants.…”