Quantitative Evaluation of Diffusion and Dynamic Contrast-Enhanced MR in Tumor Parenchyma and Peritumoral Area for Distinction of Brain Tumors.

Purpose: To quantitatively evaluate the diagnostic efficiency of parameters from diffusion and dynamic contrast-enhanced MR which based on tumor parenchyma (TP) and peritumoral (PT) area in classification of brain tumors.

Methods: 45 patients (male: 23, female: 22; mean age: 46 y) were prospectively recruited and they underwent conventional, DCE-MR and DWI examination. With each tumor, 10-15 regions of interest (ROIs) were manually placed on TP and PT area.

Malignant gangliocytic paraganglioma of the duodenum with distant metastases and a lethal course.

Gangliocytic paraganglioma (GP) is rare and has been regarded as benign in general with a good prognosis. We present a patient with duodenal GP showing a malignant and lethal clinical course. A 47-year-old male patient was found to have a duodenal tumor and enlarged regional lymph nodes.

Intraspinal dural-based primary osteoblastoma with aneurysmal bone cyst-like change.

Osteoblastoma is a benign bone-forming neoplasm that occurs commonly in the posterior elements of the spine and the sacrum. However, so far there has been no report of intradural osteoblastoma described in the literature. We present a unique case of intraspinal dural-based osteoblastoma with aneurysmal bone cyst-like change without evidence of vertebral involvement.

Sporadic meningioangiomatosis-associated atypical meningioma mimicking parenchymal invasion of brain: a case report and review of the literature.

Meningioangiomatosis is a rare hamartomatous lesion or meningiovascular malformation in brain. In extremely rare condition, meningioma may occur together with meningioangiomatosis, and only 19 cases have been described in English literature until now. We now report a case of meningioangiomatosis-associated meningioma with atypical and clear cell variant.

Clear cell meningioma with anaplastic features: case report and review of literature.

Clear cell meningioma (CCM) is an uncommon variant of meningioma, corresponding to WHO grade II. We present two cases of CCMs with anaplastic features in the intracranial and intraspinal region. The first case is a 65-year-old male who gradually developed changes in behavior over a period of 1 year.

Cystic papillary meningioma with subarachnoid dissemination: a case report and review of the literature.

Meningiomas usually present as benign tumors corresponding to WHO grade I. The development of the papillary variant of meningiomas with cyst formation in the central nervous system is extremely rare. We report a case of cystic papillary meningioma in a young female occurring in the lateral ventricle with invasion of brain parenchyma and dissemination of subarachnoid space.

The state of the art of fetal magnetic resonance imaging.

Objective: To assess the state of the art of fetal magnetic resonance imaging (MRI) in China.

Data Sources: Both Chinese and English language literatures were searched in the databases of PUBMED (1998-2005) and CNKI (1998-2005), 41 published articles about fetal MRI were selected.

Results: Fetal MRI can serve as an adjunct tool for ultrasonography because of its excellent soft tissue contrast, high spatial resolution, multiplanar capabilities, large field of view and simultaneous visualization of fetal and maternal structures.