OBJECTIVE. The purpose of this article is to review the epidemiology, multimodality imaging findings, differential diagnosis, pathologic staging, and current treatment options of gallbladder carcinoma.

CONCLUSIONS. Understanding the characteristic appearances of primary gallbladder carcinoma at multiple imaging modalities can facilitate diagnosis and enable more accurate staging for triage to extended resection or an alternate therapy.

Keywords: CT - gallbladder neoplasm - MRI - PET - sonography

We review the differents techniques in the diagnostic of thyroid nodule. The ultrasound and, especially, sonographically guided fine-needle aspiration (US-FNA), are the most accurate diagnostics tests to achieve a correct diagnosis of thyroid nodule, which is only done better by the surgery treatment and the pathology study of all lesion. We review the situations in which US-FNA is necessary and the differents diagnostic and therapeutics options.

Finally, we propose algorithms for the management of a solitary thyroid nodule, multinodular goiter and casually discovered nodule.

Keywords: thyroid nodules - ultrasound - Fine-needle aspiration