Objective: Conventional fine-needle aspiration biopsy (FNAB) for cystic thyroid nodules (CTNs) has a high rate of nondiagnostic and false-negative results. Ultrasound-guided FNAB (UG-FNAB ...

From January 1999 to October 2002, we prospectively studied 31 patients (mean age 57 years, range 36-82 years) with a cystic pancreatic lesion at the conventional ultrasound. Eleven patients ...