When TCD4 is less than 200 / mm3, there is usually acute and severe TB such as tuberculosis, meningitis, and multi-organ tuberculosis. There may be special forms of TB such as: tuberculoma in the brain and cold abscesses in the chest wall.
When the pleural fluid is low, the patient usually lies on his side to heal, when the fluid is more, the patient must lie on his side or lean against the wall to ease breathing difficulty.
TB bacteria can enter the body in 3 ways: respiratory, digestive or skin mucosa. Depending on the path of infection, the clinical manifestations are different.
Pulmonary tuberculosis usually begins in the apical region of the lung and the region below the parietal and posterior segment of the upper lobe of the lung
TB bacteria range from primary tuberculosis in the blood and lymphatic lines to causing damage first in the renal cortex, then to other parts of the urinary system.
Normally, TB bacteria reach the joints mainly by blood sugar, in rare cases bacteria follow the lymphatic pathways, possibly following approaches such as tuberculosis of the hip joints by spreading from the cold abscess of lumbar muscles.
All TB patients, regardless of the part of the body, are caused by the TB bacteria and can be the source of transmission.
Previously, according to Ranke's 3-stage cycle, tuberculosis appeared in stage 2. Nowadays, in the 2-stage cycle, TB is stage 2 - the stage after primary infection.
Tuberculosis often leaves sequelae, the more severe the sequelae are, the more severe it affects the health and working capacity of the patient, so detect and treat the disease as soon as possible.
Under natural conditions, bacteria can survive for 3 - 4 months. In the laboratory, it is possible to preserve bacteria for many years.
TB lesions in the digestive tract such as intestines, mesenteric lymph nodes or genital tract such as the uterus, ovaries, fallopian tubes ... progress, bacteria enter the peritoneum.