[Comparative study of core needle biopsy and fine needle aspiration cytology in the diagnosis of neck lymph node diseases with contrast-enhanced ultrasound].

To compare the efficacies of core needle biopsy and fine needle aspiration cytology in the diagnosis of neck lymph node diseases with contrast-enhanced ultrasound.A total of 105 patients with enlargement cervical lymph nodes were randomly divided into two groups, 49 in group A and 56 in group B. All patients were firstly examined with contrast-enhanced ultrasound to determine the targeted lymph node and the puncture point. Core needle biopsy was performed in Group A and tissues were fixed by with 10% formaldehyde; Fine needle aspiration cytology was performed in Group B and extracts were smeared and fixed with 95% alcohol.The success rates of sampling were 100.0% in group A and 96.4% in group B. The positive rates of pathological examinations were 97.9% in group A; and 82.1% in group B, with a significant difference between two groups (χ(2) = 6.97, P<0.05).The pathologically positive rates of core needle biopsy is higher than that of fine needle aspiration cytology for the diagnosis of neck lymph node diseases with contrast-enhanced ultrasound.