Pulmonary tuberculosis is named for the tendency of the body to build protective capsules around areas where Mycobacterium bacteria have invaded host tissues. The medical term for one of these encapsulated areas is a(n) .

A characteristic feature of tuberculosis is the formation of small, hard nodules called in the lungs.

n cases like tuberculosis and streptococcal pharyngitis, the infectious agent breaks loose from a local infection and is carried to other tissues. This is described as a(n) infection.

What is a bacterium that causes tuberculosis?

Most people infected with Mycobacterium tuberculosis have bacteria within tubercles, but they lack symptoms and are not contagious. This condition is known as tuberculosis.

In pulmonary tuberculosis, the main findings are cough and hemoptysis. The chest X-ray findings inreactivation tuberculosis of the lung include an infiltrate in the upper lobe with or without a cavity.