Why does the image annotated "mobile" ? What would be the annotation in North America ?
The image was obtained with a mobile x ray machine. In North America this would invariably be inaccurately and inconceivably called a "portable" image. Its not portable, its mobile. Huge difference .
What is the differential diagnosis of this lesion?
This is a "coin lesion" - malignancy (primary or secondary); infection; benign conditions (e.g. bronchogenic cyst, adenoma, granulomatous disease, etc).
Right mid zone 2 cm well-circumscribed nodule noted. No pleural effusion. Cardiomediastinal contour is within normal limits.