A presacral solitary fibrous tumor with extramedullary hematopoiesis: radiologic and pathologic findings.

Solitary fibrous tumors (SFT) are rare, ubiquitous neoplasms of mesenchymal origin, with distinctive histopathological and immunohistochemical features. We herein report an unusual case of a presacral SFT diagnosed in an asymptomatic 40-year-old woman preoperatively investigated with computed tomography and magnetic resonance imaging. Post-operative pathology examination showed a SFT containing foci of extramedullary hematopoiesis.

Measurement of exhaled nitric oxide in healthy adults.

Background And Aim: Measurement of exhaled nitric oxide (NO) is useful in the diagnosis and management of asthma. The aims of this study were to investigate the effects of physiologic confounders on levels of fractional exhaled NO (FE(NO)) in healthy adults and to establish reference values of FE(NO) measured according to American Thoracic Society (ATS) guidelines.

Methods: FE(NO) was measured in 122 healthy nonsmoking subjects of 20 to 65 years with a chemiluminescence analyser using the single breath online technique and an exhalation flow of 50 mL/s.