A stiff steel needle for fine needle aspiration biopsy is the 'core' of this biopsy instrument. The needle is manipulated by a handle piston in the biopsy handle (Fig. 1). The handle piston can be ...

Technique. If the mass is palpable, the surgeon can perform the core-needle biopsy in the office. A large needle (usually 14 gauge) is placed either by hand or with a biopsy gun device.

Typically, for cats and dogs weighing less than 15 kg, an 18-gauge needle ... require a larger core needle, such as a Jamshidi needle or an Illinois sternal needle. The biopsy sample can be ...