BACKGROUND Thymic neuroendocrine tumor (carcinoid tumor) is rare, and prognosis for patients with this tumor has been difficult to predict. METHODS The medical records of 15 patients were reviewed, and the patients were classified according to tentative TNM classification and histologic grade. RESULTS Ten (66.7%) of 15 patients were male. Lymph node metastases were identified in 9 (60%) of ...

BACKGROUND AND PURPOSE Relative cerebral blood volume (rCBV) estimates for high-grade gliomas computed with dynamic susceptibility contrast MR imaging are artificially lowered by contrast extravasation through a disrupted blood-brain barrier. We hypothesized that rCBV corrected for agent leakage would correlate significantly with histopathologic tumor grade, whereas uncorrected rCBV would not. ...

INTRODUCTION The most common primary tumors of brain are gliomas and tumor grading is essential for designing proper treatment strategies. The gold standard choice to determine grade of glial tumor is biopsy which is an invasive method. The purpose of this study was to investigate the role of fiber density index (FDi) by means of diffusion tensor imaging (DTI) (as a noninvasive method) in glial...

OBJECTIVES Pathological complete response and tumor regression to less than 10% vital tumor cells after induction chemoradiotherapy have been shown to be prognostically important in non-small cell lung cancer (NSCLC). Predictive imaging biomarkers could help treatment decision-making. The purpose of this study was to assess whether postinduction changes in tumor FDG uptake could predict patholo...

Glioma grading and classification, today based on histological features, is not always easy to interpret and diagnosis partly relies on the personal experience of the neuropathologists. The most important feature of the classification is the aimed correlation between tumor grade and prognosis. However, in the clinical reality, large variations exist in the survival of patients concerning both g...

PURPOSE We evaluated the rim patterns of intracranial meningiomas on nonenhanced (NE) and contrast-enhanced (CE) 3-dimensional fluid-attenuated inversion recovery (3D FLAIR) imaging on 3-tesla magnetic resonance (MR) imaging to clarify the associated imaging and pathological findings and the value of the rims in predicting tumor cleavability. METHODS Thirty-two patients with meningioma underw...

PURPOSE To date there have been only scattered case reports comparing the nuclear medicine characteristics of gangliogliomas with their histologic grade. We sought to determine the relative usefulness of nuclear medicine scanning, CT, and MR imaging in predicting the histologic grade of these tumors. METHODS Eleven cases of pathologically proved ganglioglioma were analyzed retrospectively. Pr...

BACKGROUND AND PURPOSE Relative cerebral blood volume (rCBV) and vascular permeability (K(trans)) permit in vivo assessment of glioma microvasculature. We assessed the associations between rCBV and K(trans) derived from dynamic, susceptibility-weighted, contrast-enhanced (DSC) MR imaging and tumor grade and between rCBV and K(trans). METHODS Seventy-three patients with primary gliomas underwe...

OBJECTIVES Deficient microvascular blood flow control is thought to cause tumor hypoxia and increase resistance to therapy. In glioma patients, we tested whether perfusion-weighted MRI (PWI) based indices of microvascular flow control provide more information on tumor grade and patient outcome than does the established PWI angiogenesis marker, cerebral blood volume (CBV). MATERIAL AND METHODS...

myxoid is a common type of liposarcoma. cardiac metastasis of sarcoma is a rare diagnosis. transthoracic echocardiography is a useful tool for beginning the diagnosis. curative resection of metastasis and then combination systemic chemotherapy for advanced disease is recommended. we report a 50 year old woman who presented with a cardiac metastasis of high grade round cell liposarcoma to right ...