PURPOSE To investigate the added value of post-contrast VIBE (volumetric-interpolated breath-hold examination) to PET/MR imaging for pulmonary nodule detection in patients with primary malignancies. MATERIALS AND METHODS This retrospective institutional review board-approved study, with waiver of informed consent, included 51 consecutive patients who underwent 18F-fluorodeoxyglucose (FDG) PET...

Thyroid nodules are a common problem found in up to two-thirds of the population on ultrasound examination. Nodules are often encountered incidentally on exams performed for other purposes. The prevalence increases with age and with radiation exposure and is higher amongst women. Approximately 5-15% of nodules are malignant; therefore, deciphering which nodules warrant attention is important. F...

INTRODUCTION To evaluate diagnostic accuracy of high-resolution ultrasonography in differentiation of benign and malignant thyroid nodules in comparison to results of guided fine needle aspiration cytology based on the Bayes rule. OBJECTIVE To assess the validity of ultrasonography results of thyroid nodules in comparison to guided fine needle aspiration cytology findings. METHODS This stud...

OBJECTIVES To determine the development rate of hepatocellular carcinoma and survival of patients diagnosed to have regenerative, and low-grade and high-grade dysplastic liver nodules. DESIGN Retrospective descriptive study. SETTING Acute public hospital, Hong Kong. PATIENTS Patients with non-malignant liver nodules confirmed by imaging-guided liver biopsy between January 1997 and Decembe...

BACKGROUND/AIM The vascular supply of dysplastic nodules (DN) is altered compared with surrounding cirrhotic nodules. Dysplastic nodules contain unpaired arteries which are isolated arteries unaccompained by bille ducts. In adition, capillarization or neovascularization is evident on CD34 and CD31 staining. The investigation of angiogenic profile of regenerative, dysplastic and nodules of hepat...

Objective: To report the results of repeat fine-needle aspiration cytology (FNAC) in thyroid nodules with an initial benign cytological diagnosis that grow during follow-up and/or present suspicious ultrasonographic characteristics. Subjects and methods: The sample consisted of 456 patients with 895 nodules. FNAC was repeated after 12 to 18 months in the case of nodules with suspicious ultrason...

This study aimed to identify factors that affect the size of benign thyroid nodules and to predict nodule size by using a newly developed model. Because most thyroid nodules are benign, they are commonly only monitored. Only a few studies have evaluated the natural progression or regression of benign thyroid nodules. Large-scale studies on the subject are nonexistent. Between January 2001 and D...

BACKGROUND AND OBJECTIVE It has been proven that volumetric measurements could detect subtle changes in small pulmonary nodules in serial CT scans, and thus may play an important role in the follow-up of indeterminate pulmonary nodules and in differentiating malignant nodules from benign nodules. The current study aims to evaluate the effects of different reconstruction parameters on the volume...

OBJECTIVE To study the clinical presentation, thyroid function tests, ultrasound (US) features, cytology and surgical pathology results of patients undergoing fine needle aspiration (FNA) biopsy of thyroid nodules and to determine if a significant difference exists in the above variables between small (less than 1 cm) and large (1 cm or more) thyroid nodules. METHODS The study is a retrospect...

BACKGROUND AND PURPOSE Bethesda class III cytology is an important limitation of the US-FNA in assessing thyroid nodules. This study aimed to assess the diagnostic efficacy of US in evaluating thyroid nodules with Bethesda class III cytology. MATERIALS AND METHODS From January 2008 to December 2009, 1036 patients with 1289 thyroid nodules diagnosed by US and subsequent US-FNA biopsy were enro...