Infection factors mainly include bacteria, viruses and other common pathogens and tuberculosis infection. When people talk about lung infection, they mostly refer to the inflammatory lesions of the lung caused by bacterial infection.
Non-infectious factors include benign and malignant lung tumors. However, people are more concerned about lung cancer, which is lung cancer. At first, lung cancer usually only showed atypical nodules.
From the image of the lung, it is generally not easy to distinguish whether the nodule is benign or malignant. Further examination requires biopsy, such as lung puncture or postoperative tissue biopsy, which can provide intuitive basis for tumor diagnosis.
If pulmonary nodules are found, it is very important to distinguish the nature of the nodules for targeted treatment.
Many people who are afraid of lung cancer ask whether lung infection will lead to pulmonary nodules. The answer is yes: lung infection can lead to pulmonary nodules, but it usually does not occur during the active period of infection, but after the recovery of lung infection.
Most of the pulmonary infections caused by common bacterial infections can be completely absorbed after reasonable treatment, and a few may be due to serious inflammation and excessive local calcium deposition, and will show pulmonary nodules after recovery.
The density of lung nodules is higher than that of surrounding lung tissues, mainly because they contain calcium ions.
Sometimes, these inflammations can stimulate the proliferation of fibrous connective tissue, leading to fibrosis and cord shadow. The appearance of these nodules is similar to the formation of scars.
It should be noted that if the nodule is caused by a common bacterial infection, it may dissipate.
However, calcified lesions or fibrous cord-like lesions caused by Mycobacterium tuberculosis infection are generally difficult to completely dissipate, but if the immunity is normal, it can remain unchanged for a long time without further expansion.
Pulmonary nodules should be reviewed regularly. If they are enlarged, there are burrs around them, or accompanied by some symptoms, such as cough, emaciation, fatigue, long-term fever and so on. , all need to be taken seriously, lung cancer should be further examined and ruled out.
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Pulmonary nodules are very common, and benign is far more than malignant. Benign pulmonary nodules are mostly caused by pulmonary infection, and the common ones are pulmonary tuberculosis, bacterial infection, cryptococcus infection, chronic infection or slight enlargement of pulmonary lymph nodes caused by smoking.
1. Tuberculosis nodule
Mycobacterium tuberculosis is called Millennium bacteria, and many people will heal themselves asymptomatic after infection, and they will be found by accidental physical examination many years later.
Like this middle-aged lady, there is a round nodule in the upper right lung with calcification inside and satellite focus around it, which is a typical old pulmonary tuberculosis. This is a benign lesion, many of which are accompanied by calcification. Just have a regular physical examination every year.
2. Inflammatory nodules formed by bacterial infection can be absorbed after anti-inflammatory treatment.
This granulomatous inflammation is not uncommon and is usually caused by some low-toxic infections.
This is a 7 1 year-old female with chest tightness for a week. She has a mixed ground glass nodule on her right lung, with unclear boundary and no pleural traction, which was completely absorbed after anti-inflammatory treatment.
Some small nodules infected by fungi will be slowly absorbed.
3. Lung lymph nodes
Long-term smoking or frequent exposure to second-hand smoke, or chronic inflammation of lymph nodes, usually manifested as triangular and round solid nodules, mostly located in the periphery of both lungs, with cord shadows connected with pleura or adjacent pulmonary veins. We have seen many such pictures before, so we won't give examples today.
Pulmonary nodules formed by lung infection are usually different from early lung cancer in many details. Combined with thin-layer image and multi-section observation, it can generally be identified. For unrecognized atypical lesions, it is sometimes necessary to reexamine after anti-inflammatory treatment or to make auxiliary diagnosis by percutaneous lung puncture.
I'm Dr. Hao from the Imaging Department. Welcome to pay attention!
I will. Everything is ambiguous. Let's see what the infection is. If it is caused by common lung BT, it will leave nodules and scar lesions after recovery. As you can see on the X-ray film, there will definitely be symptoms of Ca. Lung abscess and other lesions. The rest of the treatment is timely, generally not.
I'm Dr. Xiaoying. Pulmonary infection can form nodules, which is also one of the benign nodules we often say, called inflammatory nodules. This kind of nodule is sometimes difficult to distinguish from lung cancer. The nodules formed after this infection can be completely absorbed and disappeared after treatment, and some nodular scars may remain.
Pulmonary infection can form pulmonary nodules.
With the application of CT, pulmonary nodules are very common. Pulmonary nodules are divided into benign nodules and malignant nodules. There is a benign nodule called inflammatory nodule, which is a nodule formed by lung infection.
Pulmonary infection includes tuberculosis, aspergillosis, bacterial infection and virus infection. These infections can manifest as large areas or small nodules.
Pulmonary infection can be manifested as large flakes at first, absorbed after anti-inflammatory treatment, and finally some scars and small nodular changes, such as pulmonary nodules, will remain. These residual scar nodules are actually changes after the recovery of tuberculosis, which are benign, so don't worry.
There is also a lung infection, which is nodular at first. Nodules formed by some fungal infections look like lung cancer and are easily misdiagnosed as lung cancer. At this time, it is necessary to combine other inspections. After treatment, this nodule can disappear completely. When some people have good immunity, they can disappear without taking medicine. In our work, when CT can't distinguish benign nodules formed by infection from lung cancer, it is generally recommended to carry out anti-inflammatory treatment first and then check. If absorption improves, this is an infected nodule. If there is no change, you need to be vigilant. Puncture biopsy can be done, which is helpful for diagnosis.
Therefore, if it is a nodule formed by lung infection, or a residual nodule after infection treatment, it is a benign nodule.
Hello, lung infection can lead to pulmonary nodules! And it is very common.
First of all, what is a pulmonary nodule? The medical definition of pulmonary nodule refers to the shadow in the lung parenchyma that does not belong to normal lung tissue, and its diameter is less than 3cm. Those larger than 3cm are called masses; Less than 3 cm are collectively referred to as nodules. Among them, those less than 1cm are called small nodules.
Secondly, what are the causes of lung nodules? There are many reasons for the formation of pulmonary nodules, including long-term smoking and abnormal substance deposition caused by air pollution; Various infectious diseases stimulate normal lung tissue; Various benign tumors in the lung, such as hamartoma and sclerosing hemangioma; Early lung cancer.
Why does infection lead to the formation of pulmonary nodules?
The pathological basis of general lung infection is generally inflammatory exudation. The mechanism of forming spherical lesions is usually considered to be related to the diffusion of inflammation through alveolar pores. Therefore, after the treatment of pulmonary infection in many patients, some small inflammatory lesions spread to small alveolar cavities and form small nodules.
Generally speaking, pulmonary nodules are common and frequently-occurring diseases. In our daily work, at least three or four pulmonary CT scans of 10 are tiny nodules, so if you find small nodules after the treatment of pulmonary infection, this is a normal phenomenon and you only need regular follow-up.
In daily life, I suggest you do the following:
1. Stay away from smoking and don't smoke. Smoking is very harmful to lung tissue, which is more likely to lead to the formation of pulmonary nodules.
2. Develop good living habits: healthy diet, regular work and rest, and strengthen physical exercise at the same time. Physical exercise can enhance lung function, enhance immunity and significantly reduce the incidence of pulmonary nodules.
I'm Dr. Liu from the Imaging Department, focusing on sharing medical and health-related knowledge. Welcome to pay attention, leave a message and answer any questions.
Pulmonary infection can lead to the formation of pulmonary inflammatory nodules. Pulmonary inflammatory nodule is a pathological description of the lung in imaging examination, mainly because the lung is infected with pathogens, such as mycobacterium tuberculosis, Staphylococcus aureus, Klebsiella, etc. The lung tissue was damaged and inflammatory changes occurred in different degrees.
Some inflammatory nodules in the lung subside, forming calcification or fibrosis, which has no effect on the work and life of patients and does not cause clinical manifestations such as cough and shortness of breath. Therefore, no special treatment is needed, and regular follow-up visits are enough. If there are still inflammatory changes in the nodules, and the number is increasing, it is necessary to clarify the cause and continue to standardize treatment.
In treatment, anti-infection treatment and symptomatic treatment are the main methods. At the same time, patients should pay more attention to rest and avoid eating spicy and irritating food, otherwise it will easily damage the oral cavity and throat mucosa, thus increasing the possibility of new infection.
To sum up, lung infection can lead to the formation of pulmonary nodules. So, are pulmonary nodules necessarily caused by lung infection? The answer is no, lung nodules include inflammatory nodules, benign lung tumors and lung cancer. Clinically, the doctor will analyze the patient's medical history, laboratory examination, chest CT and other imaging manifestations, initially determine the maximum possibility of nodule nature, and then gradually determine the final diagnosis and treatment plan.
23 1 case of benign and malignant pulmonary nodules and their pathological components are shown in the table below.
There are gender differences in pathological types of pulmonary nodules, among which precancerous lesions, pulmonary aspergillosis, pulmonary sclerosing hemangioma and adenocarcinoma are more common in women than in men. Tuberculosis, pulmonary cryptococcosis, squamous cell carcinoma, adenosquamous cell carcinoma, inflammatory pseudotumor and metastatic carcinoma are all more male than female.
refer to
[1] She Hui, Fang, Chen, Dong Fang, Lai Guoxiang. Clinical features of patients with solitary pulmonary nodules [J]. China Journal of Respiratory and Critical Care Medicine, 20 15, 14 (04): 376-379.