Comparison of ultrasound-guided biopsy techniques for level IV lymph nodes: semiautomatic vs. Menghini modified needles in a retrospective dual-center study

US-MMT and US-SABN achieved comparable sample adequacy and low complication rates for biopsy of cervical level IV lymph nodes. Although US-MMT yielded longer tissue cores, this did not translate into differences in sample adequacy, use of immunohistochemistry, or complication rates. Findings from subgroup analyses stratified by operator experience are hypothesis-generating and require prospective validation.