The purpose of this study is to describe the magnetic resonance imaging (MR) findings of metastatic brain tumors with emphasis on the signal intensities of the lesion on MR. Thirty four patients with intracranial metastases were studies with MR imaging. The diagnosis was established on the basis of either brain biopsy or combination of brain MR findings and the presence of primary tumors. The primary tumors include lung cancer (n=18), breast cancer (n=3), stomach cancer (n=3), rectal cancer (n=1), renal cell carcinoma (n=1), hepatocellular carcinoma(n=1), ovarian cancer (n=1), thyroid cancer (n=1), melanoma (n=1) and unknown primary sites (n=4). The parenchymal lesions were solitary in 35% (12/34) and multiple in 65% (22/34). The size of the lesions was variable, ranging from several millimeters to 5cm in diameter. The corticomedullar junction of the cerebral heispheres was the most common location of the lesions (68%). The signal intensity of solid portion of the lesions was usually either isointense (44%) or hypointense (29%) on T1-weighted images, whereas it appeared in isointense (47%), hypointense (8%) or hyperintense (11%) on proton density-weighted or T2-weighted images. The remaining cases showed mixed signal intensities. The enhancement patterns were variable including nodular (<1cm) (6%), homogenous (19%), heterogeneous (10%), ring-like enhancement (22%) or mixed pattern(43%). The size of surrounding edema was larger than the tumor diameter in 76%. In conclusion, although there are no specific MR findings of intracranial metastasis except multiplicity, intracranial metastasis should be included in differential diagnosis with high priority, when a solitary mass showing isointensity on boty T1-and T2-weighted images with massive surrounding edema, especially in the corticomedullary junction of the cerebral hemispheres is encountered.
Biopsy ; Brain Neoplasms* ; Brain* ; Breast Neoplasms ; Carcinoma, Renal Cell ; Cerebrum ; Diagnosis ; Diagnosis, Differential ; Edema ; Humans ; Lung Neoplasms ; Magnetic Resonance Imaging ; Melanoma ; Neoplasm Metastasis ; Ovarian Neoplasms ; Protons ; Rectal Neoplasms ; Stomach Neoplasms ; Thyroid Neoplasms

The purpose of this study is to describe the magnetic resonance imaging (MR) findings of metastatic brain tumors with emphasis on the signal intensities of the lesion on MR. Thirty four patients with intracranial metastases were studies with MR imaging. The diagnosis was established on the basis of either brain biopsy or combination of brain MR findings and the presence of primary tumors. The primary tumors include lung cancer (n=18), breast cancer (n=3), stomach cancer (n=3), rectal cancer (n=1), renal cell carcinoma (n=1), hepatocellular carcinoma(n=1), ovarian cancer (n=1), thyroid cancer (n=1), melanoma (n=1) and unknown primary sites (n=4). The parenchymal lesions were solitary in 35% (12/34) and multiple in 65% (22/34). The size of the lesions was variable, ranging from several millimeters to 5cm in diameter. The corticomedullar junction of the cerebral heispheres was the most common location of the lesions (68%). The signal intensity of solid portion of the lesions was usually either isointense (44%) or hypointense (29%) on T1-weighted images, whereas it appeared in isointense (47%), hypointense (8%) or hyperintense (11%) on proton density-weighted or T2-weighted images. The remaining cases showed mixed signal intensities. The enhancement patterns were variable including nodular (<1cm) (6%), homogenous (19%), heterogeneous (10%), ring-like enhancement (22%) or mixed pattern(43%). The size of surrounding edema was larger than the tumor diameter in 76%. In conclusion, although there are no specific MR findings of intracranial metastasis except multiplicity, intracranial metastasis should be included in differential diagnosis with high priority, when a solitary mass showing isointensity on boty T1-and T2-weighted images with massive surrounding edema, especially in the corticomedullary junction of the cerebral hemispheres is encountered.
Biopsy ; Brain Neoplasms* ; Brain* ; Breast Neoplasms ; Carcinoma, Renal Cell ; Cerebrum ; Diagnosis ; Diagnosis, Differential ; Edema ; Humans ; Lung Neoplasms ; Magnetic Resonance Imaging ; Melanoma ; Neoplasm Metastasis ; Ovarian Neoplasms ; Protons ; Rectal Neoplasms ; Stomach Neoplasms ; Thyroid Neoplasms

The lack of sufficient oral mucosa available for intra-oral reconstruction has been dealt with by the use of skin or oral mucosa grafts harvested from donor sites but grafts requires more than one surgical procedures and could cause donor site morbidity. Many investigators have attempted to increase available soft tissue by tissue engineered skin or oral mucosa replacements for clinical applications. But, reconstructed mucosa by several methods have low physical properties such as rolling and contraction. The aims of this study were to develope an in vitro experimental model that maintains an epithelial-mesenchymal interaction by organotypic raft culture, and to characterize biologic properties of three-dimensionally cultured oral mucosa embedded with Polydioxanone mesh by histological and immunohistochemical analysis. The results were as follows; 1. Oral mucosa reconstructed by three-dimensional organotypic culture revealed similar morphologic characteristics to equvalent normal oral mucosa in the point that they show stratification and differentiation. 2. The expression of cytokeratin 10/13 and involucrin in the cultured tissue showed the same pattern with normal oral mucosa suggesting that organotypic co-culture condition is able to induce cellular differentiation. 3. After insertion of polydioxanone mesh, increased tensile strength were observed. These results suggest that three-dimensional organotypic co-culture of the oral mucosa cell lines with the dermal equvalent consisting type I collagen and fibroblasts reproduce the morphologic and immunohistochemical characteristics similar to those in vivo condition. And increased physical properties by use of polydioxanone mesh will helpful for clinical applications.
Cell Line ; Coculture Techniques ; Collagen Type I ; Fibroblasts ; Humans ; Keratins ; Models, Theoretical ; Mouth Mucosa* ; Mucous Membrane ; Polydioxanone* ; Research Personnel ; Skin ; Tensile Strength ; Tissue Donors ; Transplants

OBJECTIVE: To compare gross motor function outcomes in children with moderate to severe degrees of bilateral spastic cerebral palsy (CP) who received either intensive inpatient rehabilitation or intermittent rehabilitation on an outpatient basis. METHODS: A non-biased retrospective chart review was done for patients diagnosed with bilateral spastic CP who received rehabilitation therapy. The intensive rehabilitation group (inpatient group) agreed to be hospitalized to receive 22 sessions of physical and occupational therapy per week for 1 month. The intermittent rehabilitation group (outpatient group) received four sessions of physical and occupational therapy per week for 3 months in an outpatient setting. Changes in the total score on the Gross Motor Function Measure (GMFM) between baseline and the follow-up period were analyzed. RESULTS: Both groups showed significant improvements in total GMFM scores at the follow-up assessment compared to that at baseline (p=0.000 for inpatient group, p=0.001 for outpatient group). The increase in mean total GMFM score after 1 month was significantly greater in the inpatient group than that in the outpatient group (p=0.020). Higher increase in GMFM score was observed in younger subjects as revealed by the negative correlation between age and the increase in GMFM score after 1 month (p=0.002, r=-0.460). CONCLUSION: Intensive inpatient rehabilitation therapy for patients with bilateral spastic CP of moderate to severe degree was more effective for improving gross motor function than intermittent rehabilitation therapy on an outpatient basis.
Cerebral Palsy* ; Child* ; Follow-Up Studies ; Humans ; Inpatients ; Muscle Spasticity* ; Occupational Therapy ; Outpatients ; Rehabilitation* ; Retrospective Studies

Warfarin-induced skin necrosis is a rare complication caused by transient hypercoagulable state. This state is a result of rapid decline of the protein C activity relative to that of coagulation factor II, IX, and X during initiation of oral anticoagulant therapy. We experienced a case of warfarin-induced skin necrosis involving both breasts in a patient who underwent double valve replacement 1 month before. Warfarin was replaced to a low- molecular weight heparin and the necrotic breast lesion was healed spontaneously. Low-dose warfarin was restarted and gradually increased, after which a low molecular weight heparin discontinued.
Breast ; Heparin ; Heparin, Low-Molecular-Weight ; Humans ; Molecular Weight ; Necrosis* ; Protein C ; Prothrombin ; Skin* ; Warfarin

No abstract available.
Drug Eruptions ; Fibrosis ; Humans ; Lung

No abstract available.
Biopsy, Fine-Needle*

New-onset diabetes after transplantation (NODAT) is a common complication of solid-organ transplantation. As long-term posttransplant survival continues to improve, increasing attention has been placed on NODAT. Because NODAT is a potent predictor of graft failure and cardiovascular mortality in the transplant population, early detection and management of NODAT are important issues. The risk factors for NODAT in transplant recipients include older age, obesity, family history, hepatitis C virus infection, and immunosuppressive agents, such as corticosteroids and calcineurin inhibitors. Management of NODAT must be considered at the pretransplantation stage to screen high risk patients and prevent NODAT. Although NODAT management is similar to type 2 diabetes management in the general population, there are some specific considerations in NODAT management, including the immunosuppressive agent. Further studies are needed to suggest optimal management guidelines for NODAT.
Adrenal Cortex Hormones ; Calcineurin ; Diabetes Mellitus ; Hepacivirus ; Humans ; Immunosuppressive Agents ; Obesity ; Organ Transplantation ; Postoperative Complications ; Risk Factors ; Transplants ; Treatment Outcome

No abstract available.
Animals ; Ethanol* ; Metabolism* ; Phenobarbital* ; Rats* ; Trichloroethylene*

Although Soft tissue contrast and direct multiplanar imaging capability of MRI are well recognized, myelo Been the imaging modality of choice in evaluationg cervical root injury. We assessed the role of M compared its diagnostic accuracy with myelography in the evaluation of cervical root injury. MR finding Root injury in ten patients (55 roots) were retrospectively reviewed. In 26 explored roots (6 patin Frndings were compared with myelography and surgical results. In 29 roots (8 patients), which were By myelography or exploration, the MR findings were focal extraudral CSF collections (pseudomem In 21/29(72.4%, 8 patients), thickening of extradural roots in 4/29 (13.6%, 5 patients), and thickern Darn in 12/29 (41.4%, 6 patients) roots. T2-weighted axial image was superior to Tl weighted and Density-weighted images for delineationg root avulsion. The sensitivity and specificity of MRI were 7 93.3% respectively, while those of myelography were 83% and 90%. Overall diagnostic accuracy of Myelography were comparable (84.6% vs 87.5%). In conclusion, myelography is still considered as the Of choice in the preoperative evaluation of the cervical root avulsion because of its higher sensi, however, may obviate the myelography with some technical refinements.
Humans ; Magnetic Resonance Imaging* ; Myelography ; Retrospective Studies ; Sensitivity and Specificity