title: Very high frequency (13 MHz) ultrasonographic examination of the normal neck: detection of normal lymph nodes and thyroid nodules.
abstract: Very high frequency (13 MHz) ultrasonographic examination of the neck successfully visualized one or more normal lymph nodes (weakly echoic oval structures with an echoic central hilum) in 67.6% of 1000 healthy volunteers. Efficacy was not related to recent ear, nose, and throat infection, sex, or age. The longitudinal-transverse diameter ratio was greater than or equal to 2 in 86.2% of cases. No signal was detected with color Doppler imaging. One or more thyroid nodules were also identified in 34.7% of the subjects: the frequency was 44% in women and 42% in subjects over 50 years of age.
authors.affiliation: Département de Radiodiagnostic, Centre Antoine-Lacassagne, Nice, France.
authors.forename: J N
authors.initials: JN
authors.lastname: Bruneton
authors.forename: C
authors.initials: C
authors.lastname: Balu-Maestro
authors.forename: P Y
authors.initials: PY
authors.lastname: Marcy
authors.forename: P
authors.initials: P
authors.lastname: Melia
authors.forename: M Y
authors.initials: MY
authors.lastname: Mourou
mesh_terms: D000367:Age Factors; D005260:Female; D006801:Humans; D015994:Incidence; D008198:Lymph Nodes / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000000981:diagnostic imaging*; D011446:Prospective Studies; D012016:Reference Values; D012737:Sex Factors; D016606:Thyroid Nodule / Q000000981:diagnostic imaging* / Q000453:epidemiology; D014463:Ultrasonography / Q000379:methods; D018615:Ultrasonography, Doppler, Color