Positron emission tomographic scanning in the diagnosis and staging of non-small cell lung cancer 2 cm in size or less.

Objective: Several studies have suggested that positron emission tomography is more accurate than computed tomography for the staging of non-small cell lung cancer and can reduce the rate of unnecessary thoracotomy in patients with potentially resectable disease. However, there are few data on the utility of positron emission tomography in the diagnosis of patients with tumors of 2 cm or less in size.

Methods: Patients with cT1/cT2 tumors of 2 cm or less in size were retrospectively reviewed.

Tumor size is a determinant of stage distribution in t1 non-small cell lung cancer.

Study Objective: Despite renewed interest in early detection of lung cancer, the relationship between tumor size and survival remains controversial. The objective of this study was to evaluate the relationship between size and stage in patients with T1 (< or = 3.0 cm) non-small cell lung cancer (NSCLC).

Surgical resection for residual N2 disease after induction chemotherapy.

Background: Induction therapy is a common treatment modality for patients with stage IIIA non-small cell lung cancer (NSCLC). Although mediastinal nodal downstaging after induction therapy is generally considered a favorable prognostic feature, the benefit of resection in the presence of residual N2 disease is controversial. In this study we analyzed our experience with resection after induction chemotherapy in patients with residual N2 disease to more precisely define the role of surgical resection in this group of patients.

Reduced frontal white matter integrity in early-onset schizophrenia: a preliminary study.

Background: Research suggests that brain frontal white matter (WM) might be qualitatively altered in adolescents with early onset schizophrenia (EOS). Diffusion tensor imaging provides a relatively new approach for quantifying possible connectivity of WM in vivo.

Methods: Diffusion tensor imaging was used to examine the WM integrity of frontal regions at seven levels from 25 mm above to 5 mm below the anterior commissure-posterior commissure (AC-PC) plane.

Pain measurement with evoked potentials: combination of subjective ratings, randomized intensities, and long interstimulus intervals produces a P300-like confound.

Evoked potentials in response to painful stimuli have been studied as objective measures of pain. Bromm has advocated experimental conditions in which, (1) stimulus intensities are randomized, and (2) subjects rate each stimulus. However, a cognitive, i.