What is the explanation of the noun for precancerous lesions

Precancerous lesions, as the name suggests, are those lesions that are found before the tumor lesions. Precancerous lesions, let's take an example, oral leukoplakia, some betel nut chewing drivers, including these enthusiasts, are prone to cause oral leukoplakia. Oral mucosal leukoplakia can easily lead to oral cancer, tongue cancer, and so on.

At the same time, some chronic atrophic gastritis is also cancerous, but it is not cancer, and about 4% of atrophic gastritis can be converted into gastric cancer. At the same time cervical erosion, it is also a precancerous lesion, especially severe cervical erosion, it is a precancerous lesion of cervical cancer. At the same time, the milky virus, if infected, produces toxins that turn these lesions into cancer.

Therefore, precancerous lesions should not be enlarged. Only a very small number of precancerous lesions take more than a decade or even decades to transform into cancer. Therefore, we must pay attention to precancerous lesions, conduct physical examinations every year, and eliminate the best in hidden dangers.

Some diseases, although not malignant in themselves, have the potential to develop into malignant tumors, and patients are at increased risk of developing corresponding malignancies, which become precancerous lesions.

Answer]: B precancerous lesions: Although some diseases are not malignant tumors, they have the potential to develop into malignant tumors, and patients have an increased risk of developing corresponding malignant tumors.

Precancerous lesions are inherently tolerant, and it is correct to say ().

a.Precancerous lesions refer to some benign lesions that have the potential to become cancerous, which can turn into cancer if they persist for a long time.

b.Precancerous lesions refer to certain benign tumors that have the potential to become cancerous, and can turn into cancer if they persist for a long time.

c.Duodenal ulcers are precancerous.

d.Fibrocystic breast disease is not a precancerous lesion.

Correct Answer: a

Answer] :d The knowledge points assessed in this test question are the concept of precancerous lesions.

Precancerous lesions refer to benign lesions that have the potential to become cancerous, including benign non-neoplastic lesions and benign tumors, but must have a tendency to become cancerous. Early-stage invasive carcinoma is already cancerous and has developed invasive limb invasion. The malignant transformation of a benign tumor indicates that the lesion is malignant.

Tumor-like neoplasia lesions can be precancerous, but most neoplasia lesions are not. Carcinoma in situ is a cancer that has not invaded the basement membrane and is not a precancerous lesion.

The most common mistake in choosing is to mistake early invasive cancer for precancerous lesions, and the early stage of invasive cancer is carcinoma in situ, even if it is carcinoma in situ, it is already cancer, not a precancerous lesion, not to mention an early invasive cancer that has already undergone invasion.

The term cancer is explained as: a disease with a malignant tumor.

In medicine, cancer refers to malignant tumors that originate in epithelial tissue, and is the most common type of malignant tumors. Correspondingly, malignant tumors originating from mesenchymal tissues are collectively referred to as sarcomas. There are a few malignant tumors that are not named according to the above principles, such as Wilms tumor, malignant teratoma, etc.

The term "cancer" is commonly referred to as all malignant tumors.

Cancer has biological characteristics such as abnormal cell differentiation and proliferation, uncontrolled growth, invasion and metastasis, and its occurrence is a multifactorial and multi-step complex process, which is divided into three processes: carcinogenic, carcinogenic, and evolutionary, which are closely related to smoking, infection, occupational exposure, environmental pollution, unreasonable diet, and genetic factors.

In 2020, there were 19.29 million new cancer cases in the world, of which 4.57 million were new cancers in China, accounting for the world's total. In September 2022, a study conducted by scientists in the United States showed that the incidence of early-onset cancer has risen sharply worldwide since 1990. The clinical manifestations of malignant tumors vary depending on the organ, location, and degree of development.

However, malignant tumors often have no obvious symptoms in the early stage, and even if they have symptoms, they are often non-specific, and by the time patients have specific symptoms, the tumors are often already in the advanced stage. In general, the clinical manifestations of cancer are divided into two aspects: local manifestations and systemic symptoms.

Precancerous bridge lesions refer to:

a.It is bound to develop into a benign lesion of cancer.

b.There are benign lesions that can be cancerous and can be retracted.

c.Early-stage cancer.

d.Inflammatory pseudotumor.

Correct answer to Min Trap Case: b

Pathological changes refer to the abnormal changes in the body's tissues and organs during the development of the disease. These changes can be morphological or functional. Pathological changes are an important basis for disease diagnosis and the basis of disease.

Pathological changes can be acute or chronic. Acute pathological changes are usually caused by bacterial infection, viral invasion and other reasons, and are manifested as acute inflammatory reactions of tissues and organs. Chronic pathological changes are usually caused by long-term bad habits, environmental pollution and other reasons, and are manifested as degenerative changes in tissues and organs, such as atherosclerosis, diabetes, etc.

The effects of pathological changes on the organism are manifold. It can affect the body's immunity, metabolism and physiological functions, and eventually lead to the emergence and development of diseases. Therefore, it is of great significance to prevent and control the changes in the body of the disease to maintain good health.