What does a biopsy check?
Biopsy is a medical examination method that extracts human tissue or cell samples for pathological analysis to diagnose diseases or evaluate conditions. It plays an important role in cancer diagnosis, inflammation judgment and infection detection. Below is a detailed breakdown of biopsy.
1. Definition and purpose of biopsy

Biopsy is an examination method that obtains suspicious tissues or cells from the patient's body through surgery or puncture. The pathologist observes their morphology, structure and molecular characteristics under a microscope to determine the nature of the disease (such as benign or malignant). Its main purposes include:
2. Common biopsy types and applicable scenarios
| Biopsy type | Operation mode | Applicable diseases |
|---|---|---|
| needle biopsy | Fine needle extraction of tissue samples | Breast and thyroid nodules |
| endoscopic biopsy | Removal of tissue through endoscope | Gastric cancer, intestinal polyps |
| surgical biopsy | Surgery to remove part or all of the disease | Deep tumors (such as liver cancer) |
| liquid biopsy | Detection of circulating tumor cells in blood | early cancer screening |
3. Clinical application data of biopsy
According to 2023 medical statistics, the positive rate of biopsy in the diagnosis of the following diseases is as follows:
| disease type | Biopsy positive rate | Common biopsy methods |
|---|---|---|
| breast cancer | 85%-92% | needle biopsy |
| lung cancer | 78%-88% | CT guided puncture |
| stomach cancer | 90%-95% | endoscopic biopsy |
4. Precautions for biopsy
1.Preoperative preparation: Fasting or discontinuation of anticoagulant drugs (such as aspirin) is required.
2.Risk warning: Bleeding, infection or sampling errors may occur (false negative rate is about 5%-10%).
3.Result waiting time: Routine pathology reports take 3-7 days, and molecular testing may extend to 2 weeks.
5. Development Trend of Biopsy Technology
In recent years, with technological advancement, biopsy has shown the following new directions:
Conclusion
Biopsy is the "gold standard" for disease diagnosis, and its accuracy and safety are crucial to patients. Choosing an appropriate biopsy method requires taking into account the condition, imaging results, and doctor's recommendations. If the examination report indicates abnormalities, you should seek medical treatment promptly to formulate a follow-up treatment plan.
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