No abstract available.
Child* ; Human Growth Hormone ; Humans ; Kidney Failure, Chronic*

No abstract available.
Bipolar Disorder*

PURPOSE: To evaluate the diagnostic accuracy of T-tube cholangiography(TTC), selective cholangiography (SC) and noncontrast CT(NCT) in the evaluation of intrahepatic stone disease. MATERIALS AND METHODS: We retrospectively analyzed the radiological findings of these methods in thirty patients with intrahepatic stones proved by percutaneous removal. Findings of each procedure were reviewed and correlated with findings of stone removal procedure. RESULTS: Detection of stones was possible in 87. 0% for TTC, 90. 0% for SC, 96. 7% for NCT(p > 0.05). Selective cholangiography was as good as or superior to 1-I'C in determining the presence and extent of the stones in all patients(p < 0. 01). NCT was better than SC in 9;as good as SC in 18;inferior to SC in 3 patients in determining the extent and location of the stones(p > 0.05). Of 12 patients who had additional findings such as biliary cirrhosis or accompanied cholangiocarcinomas, only NCT could detect the lesions in 11 patients. CONCLUSION: Although there was no statistically significant difference between NCT and SC, one procedure sometimes gave valuable informations for interventional procedure which the other could not. Thus we conclude that both procedures are complementary studies and should be done in all patients who are subjected to biliary intervention.
Cholangiocarcinoma ; Cholangiography* ; Humans ; Liver Cirrhosis, Biliary ; Retrospective Studies

Congenital melanocytic nevi are considered to be precursors of malignant melanoma. Although the risk of malignant melanoma with medium and small congenital melanocytic nevi is uncertain, it is important to notice the possibility of malignant transformation in those lesions. We describe a 62-year-old woman who had had a brown soft verrucous tumor on her right lower back since birth. She first noticed a black nodule in the center of the tumor 5 years before which had ulcerated 3 months prior to presentation without healing. A biopsy specimen revealed malignant melanoma arising from a congenital melanocytic nevus.
Biopsy ; Female ; Humans ; Melanoma* ; Middle Aged ; Nevus, Pigmented* ; Parturition ; Ulcer

Magnetic resonance (MR) images of 14 consecutive patients with pathologically proven primary intracranial lymphoma were reviewed. All patients had a brain MR imaging before any treatment and were immunologically competent. MR images were acquired using 2.07 (n= 6) or 0.57 (n= 8) machine. The MR images were reviewed regarding the location, multiplicity, size, signal intensity, margin, shape, and the extent of surrounding edema of the lesion. Seven patients had multiple lesions, 2 to 4 in number. A total of 26 lesions was found; 25 were parenchymal lesions and one was dural lesion. The location of tumor was either central (r= 11) or peripheral (n= 14). The size of tumor was variable ranging from 0.6cm to 6.0cm in its maximal diameter. The tumors were isointense (n= 19) or hypointense (n= 7) relative to gray matter on T1-weighted images, isointense (n= 24) or hyperintense (n=2) on proton-density weighted images, and isointense (n= 21) or hyperintense (n= 5) on 78-weighted images. On gadolinium-enhanced T1-weighted images of 13 patients strong enhancement was seen in 22 of 23 lesions. Nineteen lesions showed smooth, well-defined margin, whereas remaining 7 lesions showed irregular, ill-defined margin. The shape of the tumor was diverse; round of ovoid (n= 15), lobulated (n= 9), or short linear (n= 2). These results suggest that one should consider the diagnosis of CNS lymphoma in cases with single or multiple masses that abut CSF space and show iso-or similar intensity to gray matter with strong enhancement on MR images.
Brain ; Diagnosis ; Edema ; Gray Matter ; Humans ; Lymphoma* ; Magnetic Resonance Imaging*

PURPOSE: The authors investigated the ability of cardiac blood pool clearance rates(CBCR) of 99mTc-DiSiDA in the measure merit of functioning hepatocyte mass. MATERIALS AND METHODS: We measured the volume of Iobectomized liver after completion of postoperative scanning with CBCR of 99rnTc-DISIDA in 5 rabbits who the functional hepatic Iobectomy performed by ligation of hepatic artery, portal vein and biliary tracts. Regarding the measurement of CBCR of 99mTc-DISIDA, we set the time which was decreased to the half of the clearance amount of the cardiac radioactivity by hepatic extraction of 99mTc-DISIDA at the point of 50 sec after the renal peak of the radioactivity to prevent confusing with the blood dilution of the radioactivity, that have called DI-K50. RESULTS: The results were followed that the volumes of the functional hepatic Iobectomy in 5 rabbits were 25%, 25%, 41%, 52%, 75% and the residual functioning hepatocyte masses measured by CBCR of 99rnTc-DISIDA were preserved to 75. 1%, 70. 8%, 63. 0%, 52. 2%, 30. 8% respectively. CONCLUSION: we made decision that CBCR of 99rnTc-DISlDA was useful to evaluate the functioning hepatocyte mass.
Biliary Tract ; Hepatic Artery ; Hepatocytes* ; Ligation ; Liver ; Portal Vein ; Rabbits ; Radioactivity ; Technetium Tc 99m Disofenin*

No abstract available.
Prostate* ; Prostatectomy* ; Prostatic Neoplasms*

No abstract available.
Prostate* ; Prostatectomy* ; Prostatic Neoplasms*

No abstract available.

PURPOSE: To describe MR findings of cerebral venous sinus thrombosis. MATERIALS AND METHODS: We reviewed 11 MR images of six patients with cerebral venous sinus thrombosis. The MR images were retrospectively analyzed in terms of location and signal intensity of the thrombi, parenchymal lesions such as hemorrhage and edema, and changes in follow-up study obtained in 4 patients. RESULTS: The thrombus in venous sinus was visualized on MRI in all six patients. The most frequently involved sites were superior sagittal sinus(n=4) and left transvere sinus(n=4). Signal intensity of the thrombus was isointense or hyperintense on both T1 - and T2-weighted images with loss of normal signal void of the sinus on all sequences in all patients. Parenchymal lesion was present in five of six cases, manifested as local hemorrhage in three and edema in three cases(one case overlapped). Local edema seen in three patients was completely resolved on follow-up study of seven to 29 days intervals. CONCLUSION: It is concluded that iso- or high signal intensity with loss of signal void in venous sinus is virtually diagnostic of venous sinus thromosis. If there are local parenchymal lesions such as hemorrhage and/or edema of unknown causes, cerebral venous sinus thrombosis should be included in differential diagnosis.
Diagnosis, Differential ; Edema ; Follow-Up Studies ; Hemorrhage ; Humans ; Magnetic Resonance Imaging ; Retrospective Studies ; Sinus Thrombosis, Intracranial* ; Thrombosis