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.
lung mass lesions require referral for further investigation. Multiple pulmonary nodules are described in terms of size, number, distribution, density, definition, cavitation, speed of growth (if serial films are available), and accompanying pleural, mediastinal, or skeletal abnormalities. Check for infection, systemic illness, and prior malignancy. All patients with multiple pulmonary nodules must be referred. Causes of pulmonary nodules are listed in Table II.