The possibility of secondary tuberculosis is high in the lower lobe of the right lung. In patients with secondary tuberculosis, the disease is usually caused by Mycobacterium tuberculosis, a bacterium that invades the body due to a weakened immune system. This type of secondary TB occurs in the upper and lower lobes of the lung tissue behind the base. Patients may present with persistent low-grade fever, night sweats, weight loss, fatigue, and loss of appetite. Female patients may also experience irregular menstruation. For tuberculosis, a full and adequate course of anti-tuberculosis treatment with anti-tuberculosis mycobacterial drugs such as isoniazid, rifampicin, pyrazinamide, and ethambutol can be administered. If the patient has a cornified focus in the lower lobe of the right lung, it may also be other diseases, and can go to the respiratory department or the department of infection of the local hospital for consultation, and follow the guidance of the professional doctor for the next step in the treatment.