These chest X-rays show advanced pulmonary tuberculosis. Arrows indicate the location of cavities within these light areas. The X-ray on the left clearly shows that the opacities are located in the upper area of the lungs toward the back. The appearance is typical for chronic pulmonary tuberculosis but may also occur with chronic pulmonary histiocytosis and chronic pulmonary coccidioidomycosis. Pulmonary tuberculosis is making a comeback with new resistant strains that are difficult to treat.
Pulmonary tuberculosis is the most common form of the disease, but other organs can be infected.
Sarcoid causes damage to the lung tissue that heals by scarring. The film shows a diffuse milky and granular appearance in the normally dark lung areas. This individual has marked decrease in lung function. When erythema multiforme affects the mouth and mucous membranes, it is called erythema multiforme major or Steven's Johnson Syndrome. Erythema nodosum usually occurs in association with specific infections, inflammatory conditions, or medications.