And as it now turns out this signal is dependent on stimulation from thyroid hormone. In a just-published study scientists now believe that anemia may be the first sign of hypothyroidism, an issue they also document for subclinical hypothyroidism. In the past I have always viewed anemia as a thyroid disrupter.
Pulmonary nodules are small, focal, radiographic opacities that may be solitary or multiple. A classic solitary pulmonary nodule (SPN) is a single, spherical, well-circumscribed, radiographic opacity measuring less than or equal to 30 mm in diameter and is surrounded completely by aerated lung.
A solitary pulmonary nodule (SPN) is defined as a single, discrete pulmonary opacity that is surrounded by normal lung tissue and is not associated with adenopathy or atelectasis. The radiologic features of SPNs are demonstrated in the images below. Solitary pulmonary nodule. Cavitating nodule secondary to an abscess.