Clinical comparison of small-and large-caliber cutting needles for biopsy.

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Abstract
A 22 gauge skinny core (Madayag) biopsy needle, an 18 gauge Menghini needle and a 14 gauge Tru-cut needle were compared in 51 patients. The Madayag needle was found to have a high recovery rate and provided adequate histological information in a large percentage of cases. The larger needles more consistently demonstrated a higher recovery rate and diagnostic specimen than the Madayag needle. The radiologist should become familiar with all 3 types of needles to facilitate selection of the proper instrument in each case.