must be noncalcified. Nodules that are calcified are included in the category "OTHER X-ray findings, No follow-up needed". 3. Discrete fibrotic scar with volume loss or retraction—Discrete linear densities with reduction in the space occupied by the upper lobe. Associated signs include upward deviation of the fissure or hilum on the corresponding side with asymmetry of the volumes of the two thoracic cavities. 4. Discrete nodule(s) with volume loss or retraction—One or more nodular densities with distinct borders and no surrounding airspace opacification with reduction in the space occupied by the upper lobe. Nodules are generally round or have rounded edges. 5. Other—Any other finding suggestive of prior TB, such as upper lobe bronchiectasis. Bronchiectasis is bronchial dilation with bronchial wall thickening. Other chest X-ray findings Follow-up needed This category includes findings that suggest the need for a follow-up evaluation for non-TB conditions. Musculoskeletal abnormalities - New bony fractures or radiographically apparent bony abnormalities that need follow-up. Cardiac abnormalities - Cardiac enlargement or anomalies, vascular abnormalities, or any other radiographically apparent cardiovascular abnormality of significant nature to require follow-up. Pulmonary abnormalities - Pulmonary finding of a non-TB nature, such as a mass, that needs follow-up. Other - Any other finding that the panel physician believes needs follow-up, but is not one of the above. No follow-up needed This category includes findings that are minor and not suggestive of TB disease. These findings require no follow-up evaluation. Pleural thickening - Irregularity or abnormal prominence of the pleural margin, including apical capping (thickening of the pleura in the apical region). Pleural thickening can be calcified. Diaphragmatic tenting - A localized accentuation of the normal convexity of the hemidiaphragm as if "pulled upwards by a string." Blunting of costophrenic angle (in adults)—Loss of sharpness of one or both costophrenic angles. Blunting can be related to a small amount of fluid in the pleural space or to pleural thickening and, by itself, is a non-specific finding (except in children, when even minor blunting may suggest active TB). In contrast a large pleural effusion, or the presence of a significant amount of fluid in the pleural space, may be a sign of active TB at any age. Solitary calcified nodules or granuloma - Discrete calcified nodule or granuloma, or calcified lymph node. The calcified nodule can be within the lung, hila, or mediastinum. The borders must be sharp, distinct, and well defined. This was considered