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A well-defined opacity is seen in the peripheral right hemithorax. It has positive incomplete border sign and extrapleural sign, which are suggestive of extra-pulmonary pathology (pleural or extra-pleural). Erosions of the inferior border of right 6th as well as the posterior aspect of the right 7th ribs (bony involvement) are seen. The heart is mildly enlarged. The lungs are clear. Dorsal spondylosis.