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Tuberculosis of the lungs may also occur via infection from the blood stream. This is known as a Simon focus and is typically found in the top of the lung. [ 91 ] This hematogenous transmission can also spread infection to more distant sites, such as peripheral lymph nodes, the kidneys, the brain, and the bones.
Ghon's complex is a lesion seen in the lung that is caused by tuberculosis. [1] [2] The lesions consist of a Ghon focus along with pulmonary lymphadenopathy within a nearby pulmonary lymph node. A Ghon's complex retains viable bacteria, making them sources of long-term infection, which may reactivate and trigger secondary tuberculosis later in ...
Tuberculosis usually affects the lungs, but it spread to the brain, spine, and kidneys. Not everyone infected with the bacteria that causes TB will get sick, which is called a latent or inactive ...
Symptoms of M. tuberculosis include coughing that lasts for more than three weeks, hemoptysis, chest pain when breathing or coughing, weight loss, fatigue, fever, night sweats, chills, and loss of appetite. M. tuberculosis also has the potential of spreading to other parts of the body. This can cause blood in urine if the kidneys are affected ...
Cases of tuberculosis have cropped up at schools in different parts of the country. Here's what parents need to know about the infectious disease.
Having green, yellow, or thickened phlegm (sputum) does not always indicate the presence of an infection. Also, if an infection is present, the color of the phlegm (sputum) does not determine whether a virus, a bacterium or another pathogen has caused it. Simple allergies can also cause changes in the color of the mucus. [1]
A Simon focus is a tuberculosis (TB) nodule that can form in the apex of the lung when a primary TB infection elsewhere in the body spreads to the lung apex via the bloodstream. [1] Simon focus nodules are often calcified .
It’s estimated that about two billion people worldwide are infected with mycobacterium tuberculosis, often just shortened to tuberculosis or simply ‘TB’. Two billion is a ton of people, but even though they’re infected, that doesn’t mean all those people have symptoms, the vast majority, about 90-95%, aren’t even aware they’re ...