Pulmonary mycetomas on radiographs most commonly show as
Correct Answer: Lucent crescent
Description: The fungal ball produces a tumor-like opacity on X ray,but can be distinguished from a carcinoma by the presence of a crescent of air between the fungal ball and the upper wall of the cavity(Air crescent sign).HRCT is more sensitive. Reference:Davidson's Medicine-22nd edition,page no:698.
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