Masayuki Haniuda

Learn More
The aim of this study was to evaluate the usefulness of annual screening for lung cancer by low-dose computed tomography (CT) and the characteristics of identified lung cancers. Subjects consisted of 5483 general population aged 40-74 years, who received initial CT scans in 1996, followed by repeat annual scans for most subjects in 1997 and 1998, with a(More)
OBJECTIVE The authors determined the effect of postoperative mediastinal irradiation in preventing local and pleural recurrence of thymoma. SUMMARY BACKGROUND DATA The role of mediastinal irradiation after incomplete resection or biopsy of an invasive thymoma is well established. However, routine use of adjuvant mediastinal irradiation for patients with(More)
Early diagnosis and treatment are important for improvement of the low survival rate of patients with lung cancer. The objective of this study was to evaluate the long-term survival rate of patients identified to have lung cancer by our population-based baseline and annual repeat low-radiation dose computed tomography (low-dose CT) screenings, conducted in(More)
Digital tomosynthesis makes it possible to reconstruct multiple tomographs from digital data obtained during a single tomographic motion and permits digital processing, which adds a number of special advantages to the well-known advantages of conventional tomography. We performed digital tomosynthesis with a fluororadiographic TV unit with tomographic(More)
BACKGROUND Even after complete resection, recurrence of thymoma is not infrequently observed, and treatment of recurrent thymoma remains controversial. STUDY DESIGN One hundred and twenty-six patients underwent surgically complete resection for thymoma, and 24 of them had a recurrence. Surgical treatment of recurrent thymoma was attempted in 15 patients(More)
Mediastinal granular cell tumor is an exceptionally rare tumor; there are only a few previously reported cases. We report a 21-year-old man with a granular cell tumor in the right posterior mediastinum. Chest computed tomography scans and magnetic resonance imaging revealed a 15x20 mm well circumscribed, homogeneous mass, which was closely associated with(More)
An MR-pathologic correlation of nine intrathoracic neurogenic tumors (three neurofibromas, four schwannomas, and two ganglioneuromas) was performed to characterize their MR appearances. The three types of intrathoracic neurogenic tumor were found to have characteristic appearances on MR images that should be helpful when establishing the differential(More)
Vascular endothelial growth factor (VEGF) plays multifunctional roles in both the development of vasculature and the maintenance of vascular function. A decrease in VEGF reduces angiogenesis and induces apoptosis of vascular endothelial cells. Inhibition of the VEGF receptor causes endothelial cell apoptosis and emphysema. We postulated that VEGF(More)
By using the cannula inserting method, vasoconstrictor responses to norepinephrine (a mixed alpha-1 and alpha-2 adrenoceptor agonist), phenylephrine (a selective alpha-1 adrenoceptor agonist), clonidine and xylazine (selective alpha-2 adrenoceptor agonists) were investigated in the isolated and perfused canine pulmonary vein. The segment of vessels was(More)
Changes in the sinus rate, right atrial contractile force and left ventricular contractile force in response to isoproterenol, epinephrine, dobutamine, salbutamol and procaterol were studied in isolated, blood-perfused right atrial or left ventricular cardiac preparations of the dog. Each substance elicited dose-dependent increases in the three parameters(More)