Category
Diagnostic
Typical Use
Obtain tissue samples for histology or cytology.
Description
Needles designed for core biopsy or fine needle aspiration allow percutaneous sampling of masses in organs such as the breast, liver, thyroid, and lymph nodes under imaging guidance to obtain tissue for histopathologic or cytologic diagnosis. Core biopsy needles retrieve cylindrical tissue cores suitable for histology and immunohistochemistry, while fine needle aspiration yields cellular material for cytology; choice depends on lesion characteristics and diagnostic needs. Image guidance (ultrasound, CT, or fluoroscopy), sterile technique, and postprocedure monitoring for bleeding or infection optimize safety and diagnostic yield. Proper labeling, fixation, and transport of specimens are essential for accurate laboratory interpretation and clinical decision making.