Forty-seven patients with thyroid nodules (13 papillary carcinomas, 14
adenomas, and 20 adenomatous goiters) underwent color Doppler sonogra
phy with a 7.5 MHz transducer. Perinodular or intranodular color flow
signals were depicted in 10 of 13 papillary carcinomas, in 10 of 14 fo
llicular adenomas, and in 14 of 20 adenomatous goiters. No correlation
existed between the presence of color signals and pathology, whereas
the detection rate of color signals had a dependence on the size of th
e lesions. No specific flow pattern for malignancy could be found. Col
or Doppler sonography would not improve the ability to differentiate b
enign from malignant nodules significantly.