Journal of Korean Society of Ultrasound in Medicine 2006;25(3): 151-155.
Ultrasound-Guided Fine-Needle Aspiration Biopsy of Multiple Thyroid Nodules.
Ji Dae Kim, Il Hun Bae, Seung Young Lee, Gi Seok Han, Sang Hun Cha, Sung Jin Kim, Kil Sun Park, Sung Soo Koong, Ok Jun Lee
1Department of Diagnostic Radiology, College of Medicine and Medical Research Institude, Chungbuk National University. Korea.
2Department of Internal Medicine, College of Medicine and Medical Research Institude, Chungbuk National University, Korea.
3Department of Pathology, College of Medicine and Medical Research Institude, Chungbuk National University, Korea.
  Published online: September 1, 2006.
ABSTRACT
PURPOSE: To standardize the number of nodules which necessitates ultrasound-guided, fine-needle, aspiration biopsy in patients who have multiple thyroid nodules with the same sonographic characteristics as each other. MATERIALS and METHODS: From February, 2002 to March, 2004, among patients whose diagnosis was confirmed by ultrasound-guided, fine-needle, aspiration biopsy, 545 nodules of 203 patients were found in sonography with more than two thyroid nodules. Each thyroid gland nodule was classified on a score from 0 to 2 points on the basis of the following 5 characteristics: internal content, margin, echogenicity, shape and calcification in sonography. When the score of all characteristics was the same, by deciding on nodules with the same sonographic char-acteristics and with the score of at least one characteristic being different, we divided the nodules with different sonographic characteristics in a patient. By methods such as given in the preceding descriptions, patients with multiple thyroid nodules were separated into two groups: one in which all nodules had the same sonographic characteristics and another in which nodules have at least one different sonographic characteristic. Then, each pathologic result was searched for the same case and different case in each patient group. RESULTS: Among the 203 patients who were diagnosed with multiple thyroid nodules in ultrasonography, 79 patients (38.9%) had nodules with the same ultrasonographic characteristics and 124 patients (61.1%) had nodules with at least one different ultrasonographic characteristic. All 79 patients' nodules with the same ultrasono-graphic characteristics in each patient showed the same pathologic result in all cases (100.0%) and there was no case showing a different pathologic result. Otherwise, among the 124 patients' nodules with different ultrasono-graphic characteristics, each patient showed the same pathologic result in 111 (89.5%) and different pathologic result in 13 (10.5%). CONCLUSION: In patients who have multiple thyroid nodules, if a patient's nodules have the same sonographic characteristics, we can perform ultrasound-guided, fine-needle, aspiration biopsy about only one nodule and if a patient's nodules have different sonographic characteristics from each other, we must perform the biopsy for all nodules.
Keywords: Thyroid, US; Thyroid, biopsy; Ultrasound (US), guidance; Biopsies, technology
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