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Biomedical subjects

W Lohner

Publications and source records attributed to W Lohner.

2 recordsLinked to original sources

[Color doppler ultrasonographic detection of focal thyroid nodules].

AIM: To determine if colour Doppler sonography is a sensitive tool to detect solitary hot thyroid nodules. METHODS: All patients evaluated in our ultrasound laboratory during study period also underwent thyroid sonography. If one or more nodules with a diameter of at least 8 mm were present, thyroid scientigraphy was performed. Hyperperfusion within the nodule compared to the surrounding tissue indicated autonomy according to the study protocol. RESULTS: 1010 patients were screened. 385 had one or more nodules, 309 of them with a diameter of more than 8 mm. Among these patients a hot nodule was proved with scintigraphy in 120 cases. 116 of these 120 patients were correctly identified with colour Doppler sonography. CONCLUSION: Colour Doppler sonography is a reliable method to detect solitary hot or hyperperfused thyroid nodules and to identify a risk group of patients prior to the administration of x-ray contrast media.

Adult↗

Thyroid autonomy with color-coded image-directed Doppler sonography: internal hypervascularization for the recognition of autonomous adenomas.

In a prospective study, we assessed the possibility of recognizing autonomous adenomas of the thyroid with color-coded image-directed Doppler sonography using internal hypervascularization in thyroid nodules for identification. Fifty-three patients with thyroid nodules underwent additional CCDS examination and nuclear scintigraphy (reference). Of 29 patients having autonomous adenomas, 28 patients presented internal hypervascularization in their nodules resulting in a sensitivity of 96% and a specificity was 75%. Interestingly CCDS detected six adenomas in patients showing normal laboratory data (bTSH, TT3, FT4). CCDS could be used to exclude focal adenomas with a negative predictive value of 94%. The positive predictive value for adenoma was 82%.

Adenoma↗