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Difference between revisions of "Cytopathology"
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→Principles of FNA
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==Principles of FNA== | ==Principles of FNA== | ||
General: | General: | ||
*Fine needle aspiration of superficial lesions may be performed by pathologists or other clinicians | |||
*Fine needle aspiration of deep-seated lesions may be performed by interventional radiologists under imaging guidance | |||
*Endobronchial ultrasound may be used by pulmonologists and thoracic surgeons to access pulmonary lesions, while endoscopic ultrasound may be used by gastroenterologists to access GI tract or pancreatic lesions | |||
*Fine needle aspiration is an oxymoron.<ref>SB. 11 January 2010.</ref> | *Fine needle aspiration is an oxymoron.<ref>SB. 11 January 2010.</ref> | ||
**One does not really aspirate. | **One does not really aspirate. | ||
Principles:<ref>SB. 11 January 2010.</ref> | Principles:<ref>SB. 11 January 2010.</ref> | ||
*Use a small needle - 22 gauge. | *Use a small needle - 22-25 gauge. | ||
*Use minimal suction - aspiration per se is not the key; the sample is obtained by coring. | *Use minimal suction - aspiration per se is not the key; the sample is obtained by coring. | ||
*Use minimal back and forth angulation - it destroys blood vessels | *Use minimal back and forth angulation - it destroys blood vessels | ||