The diagnosis of a lung nodule depends on
the symptoms you have, the size of the nodule, number of nodules and their shape and borders.
A well defined solid opacity in lung
can be due to pneum<span style = 'background-color: #dae8f4'>on</span>ia
, cancer, tuberculosis, a benign lung nodule, or due to an infarct. Less well defined or diffuse opacities are
usually multiple in nature and often due to inflammation
, tuberculosis (military type with multiple lesions
), asbestosis, silicosis, auto-immune diseases etc.