Preoperative subclinical hyperthyroidism in patients with papillary thyroid carcinoma.

Objectives: Numerous studies have reported the effects of subclinical hyperthyroidism on the cardiovascular system, osteoporosis, and metabolic syndrome. However, there are few studies examining the relationships between subclinical hyperthyroidism and thyroid cancer. The aim of this study was to investigate the relationships between preoperative subclinical hyperthyroidism and clinicopathological characteristics in patients with papillary thyroid carcinoma (PTC) in terms of thyroid-stimulating hormone (TSH) levels and TSH receptor antibody (TRAb) values.

Oncocytic sialolipoma of the submandibular gland.

Sialolipoma, a rare tumor of the salivary gland, is a recently described variant of salivary gland lipoma. Oncocytic sialolipoma was first described by Pusiol et al. in 2009.

Ultrasound-guided intratumoral indigo carmine injection for intraoperative, surgeon-performed tumor localization.

Background: The purpose of this study was to evaluate the feasibility of ultrasound-guided intratumoral indigo carmine injections for intraoperative localization of small head and neck tumors and to introduce our surgeon-performed technique.

Methods: In total, 23 patients who had tumors ≤1.5 cm that were not palpable by 2 head and neck surgeons were enrolled in this prospective study.

Clinical relationship between Hashimoto's thyroiditis and papillary thyroid cancer.

Background: The relationship between Hashimoto's thyroiditis (HT) and papillary thyroid cancer (PTC) with regard to their co-occurrence and the effect of concurrent HT on the prognosis of PTC has been debated. The aim of the present study is to determine a clinical relationship between these two disease entities and to evaluate the correlation between concurrent HT and various clinicopathological parameters.

Material And Methods: Demographic and histopathological data were collected from 675 patients undergoing thyroid surgery from 2000 to 2005, and 303 patients who received initial treatment for thyroid disease at our institution and whose medical records were accessible for review were enrolled in this study.

Solvation dynamics by coherence period resolved transient grating.

We report a third-order nonlinear time-domain method, coherence period (τ) resolved transient grating (TRTG), that gives accurate solvation dynamics free from population relaxation in a short data acquisition time. The validity of TRTG is established by theory and experiment. The TRTG signal is shown to follow the transition frequency correlation function by an analytic expression based on the response function theory for delta function pulses and by model numerical calculations including finite pulse durations.

Coherent interactions in femtosecond transient grating.

Transient grating of a dye in liquid has been measured as a function of the electronic coherence period. A diffractive beam splitter and a pair of wedge prisms are implemented to achieve precise spatial phase overlap and interferometrically accurate control of the time delay between the pump pulses. As the electronic coherence period is varied, coherent interactions lead to an enhancement or loss of the sharp feature in the transient grating signal near time zero, which is usually called coherent spike.