Cytological examination of the biopsy needle

Cytology (cytology) check shall be defined as areas in patients with lesions, scrape and cells in the puncture extraction, observation of pathological morphology and make qualitative diagnosis, cytological examination is mainly used in the diagnosis of the tumor, can also be used to check and diagnosis of some diseases, such as internal organs of inflammatory disease diagnosis and judgement of hormone levels, etc.

Cytological specimens can be exudated cells from secretions and excretions of the reproductive tract, respiratory tract, digestive tract and urinary tract, or exudated cells from the fluid of the chest, abdomen, pericardial cavity, joint cavity and cerebrospinal membrane cavity extracted by puncture, or cells collected by various endoscope brush smears and prints. Or cells in the lesions of various tissues and organs of the whole body directly aspirated by fine needle aspiration (FNA) technology (needle diameter 0.6-0.9mm) or punctured under the guidance of B-ultrasound and X-ray. These cells were smearized, fixed, stained, and observed and diagnosed under light microscope after direct or centrifugation sedimentation. Results are usually available within a few hours. The main objective is to determine whether there are tumor cells, benign or malignant. (1) Exfoliated cells of tumor tissue on the epithelial surface of the body, such as exfoliated cells of the esophagus, female genital tract, and urinary tract.

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