1, primary tuberculosis Primary tuberculosis is a clinical condition caused by primary tuberculosis infection. It includes primary syndrome and intrathoracic lymph node tuberculosis. 2, blood-borne tuberculosis includes acute blood-borne tuberculosis (acute cornified tuberculosis) and subacute and chronic blood-borne tuberculosis. Secondary tuberculosis is a major type of pulmonary tuberculosis, including infiltrative, fibrous cavity and caseous pneumonia. 4, tuberculous pleurisy has been clinically excluded from other causes of pleurisy. These include tuberculous dry pleurisy, tuberculous exudative pleurisy, and tuberculous abscess pleurisy. 5.Other extrapulmonary tuberculosis Other extrapulmonary tuberculosis is named according to the location and organs, such as: bone and joint tuberculosis, tuberculous meningitis, renal tuberculosis, intestinal tuberculosis, etc. What is primary pulmonary tuberculosis? What are the imaging features? Primary tuberculosis is a type of tuberculosis in which Mycobacterium tuberculosis first invades the lungs and causes morbidity. This type may include primary foci in the lungs that are mainly exudative and their corresponding sites of lymphovasculitis and hilar and mediastinal lymphadenitis, forming dumbbell-shaped X-ray imaging features; in some patients, the primary foci are absorbed and manifest as hilar and/or mediastinal lymph node enlargement. What are the morbidity characteristics of acute hematogenous pulmonary tuberculosis? Acute disseminated pulmonary tuberculosis has an acute onset, usually with a sudden high fever as the first symptom and a body temperature of 39-40°C, accompanied by night sweats, loss of appetite, cough, shortness of breath, etc. X-ray chest examination shows corn-like shadows of 1 to 3 mm in size and density with uniform distribution. Some children have persistent high fever or fluctuating temperature with hepatosplenomegaly and superficial lambal nodes, which are easily confused with typhoid fever and sepsis clinically. Some infants and children mainly present with general symptoms of toxicity, such as fever, loss of appetite, lethargy and lethargy, which are often misdiagnosed as malnutrition. Other children show signs of meningitis at the onset of the disease, and the characteristics of hematogenous tuberculosis in infants under 6 months of age are rapid onset, severe symptoms, and involvement of many organs, especially the tendency to develop tuberculous meningitis. The course of the disease progresses rapidly and the mortality rate is high. Acute disseminated pulmonary tuberculosis usually starts with high fever and is often not easily diagnosed at the beginning of the disease. Clinical diagnosis should be based on the history of TB exposure, symptoms of TB toxicity, positive tuberculin test, and chest x-ray. What are the clinical features of tuberculous pleurisy? Tuberculous pleurisy is divided into dry pleurisy and exudative pleurisy. Dry pleurisy has no obvious positive X-ray signs, while exudative pleurisy has a small amount of pleural effusion, which is shown by thickening of the diaphragm shadow and shallowing of the angle of the rib diaphragm, and moderate or large amount of pleural effusion, which can be shown as a large dense shadow with uniform distribution. What does hemoptysis in TB patients indicate? Hemoptysis is one of the common symptoms of tuberculosis and is caused by rupture of pulmonary blood vessels due to tuberculosis lesions. Hemoptysis in tuberculosis can occur during the progression and deterioration of the lesion, or during the period of improvement of the lesion, or even during the stabilization of the calcification of the lesion. Some patients with TB have a lot of hemoptysis without serious pulmonary lesions; some patients with severe disease do not have hemoptysis; some patients do not have active TB lesions in their lungs, but clinically they have repeated hemoptysis for which no clear cause can be found, which may be caused by calcified foci damaging adjacent blood vessels or by localized bronchodilation of lesions; some patients are also affected by climate change. Therefore, hemoptysis in pulmonary tuberculosis is not proportional to the severity of the lung lesion, and hemoptysis does not indicate advanced tuberculosis.