A case of testicular embryonal carcinoma developed in s cryptorchid testis is presented with a review of the literature. According to Campbell's series, the incidence of malignant cryptorchid testis was 11.6%. and his statistical evaluation was similar to Gilbert and Hamilton's series of 7,000 cases of testicular neoplasms where 840 tumors were developed in undescended testes(12%). Both authors agree that the chance of neoplastic development in a cryptorchid testis is approximately 48 times greater then that developing in a normally descended testis. Several cases of testicular tumor were reported sporadically in Korea, but malignant tumors in cryptorchism were rarely seen in the literatures Only two cases of malignant cryptorchid testis were already reported in Korea.
Carcinoma, Embryonal* ; Cryptorchidism ; Incidence ; Korea ; Male ; Testicular Neoplasms ; Testis*

PURPOSE: Kimura's disease is an inflammatory condition of unknown etiology which usually occurs in salivary glands and cervical lymph nodes. This study was undertaken to evaluate the radiologic characteristics of Kimura's disease using CT and MRI. MATERIALS & METHODS: We evaluated CT & MR of 10 patients with histologically proved Kimura's disease in the head and neck. Six males and four females between 16 and 58 years old (mean age, 37.6 years) were included. Contrast enhanced CT scan was performed in all, and spin-echo MRI was performed in 2 patients. RESULTS: Both CT and MRI demonstrated the distinctive sites of involvement that were major salivary glands (4 cases) and lacrimal gland (1 case), periglandular soft tissue (8 cases), and cervical lymph nodes (8 cases). Majority of soft tissue lesions were ill-defined with infiltration to adjacent fascial planes, but nodal lesions were relatively well-defined and homogenous. The lesions were iso-intense on Tl-weighted image and hyper-intense on T2-weighted image. All but a few nodal lesions showed variable degree of contrast enhancement on CT and MRI. CONCLUSION: In diagnosis of Kimura's disease, CT & MRI of head & neck, especially salivary glands, are useful. In cases of recurrent periglandular soft tissue mass with contrast-enhancing cervical lymphadenopathy in adult patients, Kimura's disease should be included in the differential diagnosis.
Adult ; Diagnosis ; Diagnosis, Differential ; Female ; Head* ; Humans ; Lacrimal Apparatus ; Lymph Nodes ; Lymphatic Diseases ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Neck* ; Salivary Glands ; Tomography, X-Ray Computed

A case of right ovarian vein syndrome is reported with a review of literature. The patient presented was a 29 year-old multipara and eighth month of pregnancy. The extirpation of entire right ovarian vein, including it's all tributaries produced a good result and has not caused interruption of pregnancy. The clinical situation due to aberrant right ovarian vein is probably more frequent than heretofore suspected, by reason of a frown of X-rays during pregnancy and also an unawareness of the condition. Therefore, if clinical observations and X-ray studies are performed, more cases of such a condition. will be expected.
Adult ; Humans ; Pregnancy ; Veins*

This paper contains the results of clinical and neuroradiologic studies in 9 cases of histopathologicallyverified intracranial cavernous hemangiomas. The most common clinical presentations were focal seizure andheadache which were accompained by focal neurologic deficits. Skull films revealed abnormality in 3 cases andcerbral angiography revealed an avascular area in 8 cases, but both were of little diagnostic significance. CTusually demonstrated a hyperdense, cystic and calcified lesion without significant mass effect, and mild degereeof tubular or ring like enhancement after contrast injection. The follow-up CT findings in 4 cases over a 6-monthperiod were compatible to repeated minute hemorrhage and resolution. The above clinical and CT findings and , ifpossible, repeated CT could suggest the diagnosis of cavernous hemangioma and provide the proper management,including the avoidance of unnecessory radiation therapy and biopsy related complications.
Angiography ; Biopsy ; Diagnosis ; Follow-Up Studies ; Hemangioma, Cavernous ; Hemorrhage ; Neurologic Manifestations ; Seizures ; Skull

Acute disseminated encephalomyelitis (ADEM) is a demyelinating disease of probable autoimmune etiology. The MR images of patients with clinically suspected ADEM were retrospectively reviewed. The clinical symptoms occurred 5 days to 1 month after viral upper respiratory infection (4) and Coxsakie viral infection(1). The symptoms had begun with fever(3), headache(3), sore throat(1), and drowsy mental state (1), which progressed with monophasic course to altered mental change(2), extremity weakness(2), seizure(1) and/or cerebellary symptom(I) MRI findings of ADEM showed patchy(4), nonhemorrhagic(5), asymmetric(5) high signal intensity lesions on T2-weighted images. The number of the lesions was mostly multiple(4). The lesions mainly involved the brain stem(3) and subcortical white matter(3). Follow-up MR images of 13 days to 20 days after high dose steroid therapy showed marked improvement in two of three, which well correlated with clinical manifestations. MR findin of multiple, patchy, nonhemorrhagic and asymmetric lesions in subcortical white matter and brain stem on T2-weighted images seem to be characteristic features of ADEM, but nonspecific. Therefore, clinical correlation is required in evaluating ADEM.
Brain ; Brain Stem ; Demyelinating Diseases ; Encephalomyelitis, Acute Disseminated ; Extremities ; Follow-Up Studies ; Humans ; Magnetic Resonance Imaging* ; Retrospective Studies ; White Matter

PURPOSE: The purposes of this study were to analyze the MR findings of medulloblastoma, and to evaluate the subarachnoid dissemination and the significance of contrast enhanced MR of brain and spine for tumor.. MATERIALS AND METHODS: The preoperative brain MR studies of 18 patients (9 males, 9 females;mean age, 9.4 years) with surgically proved medulloblastomas were retrospectively reviewed to characterize these neoplasms with regard to their location, size, MR signal intensity, appearance after contrast enhancement, presence of cyst and necrosis, subarachnoid dissemination, and other associated findings. In 14 patients postoperative spine MR studies were evaluated for staging and therapeutic planning. RESULTS: The most frequent location of medulloblastoma was the inferior vermis and the mean tumor size was 4.1 x 3.6 x 3.9 cm. On Tl-weighted image, medulloblastomas generally had low to intermediate signal, predominantly hypointense relative to white matter. On T2-weighted image, medulloblastomas showed modetately high signal, hyperintense relative to white matter. Inhomogeneous contrast enhancement was demonstrated in 13 patients(72.2%) after injection of gadopentetate dimeglumine(Gadolinium). Cyst and necrosis within the tumor were visualized in 15 patients(83.3%). Subarachnoid disseminations of medulloblastomas were noted in 11 patients(61.1%), of which 6 demonstrated intracranial and 2 intraspinal dissemination. Three had both intracranial and intraspinal dissemination. In nine cases with intracranial lesions, there were intraparenchymal mass formation(7), subarachnoid nodules(5), infundibular lesions(2) and diffuse gyral enhancement(I). In five cases with intraspinal lesions, there were extramedullary intradural small nodules(3), central canal nodules(2), intradural masses(I)and fine nodular and sheet-like leptomeningeal enhancement(1). Other associated findings included intratumoral hemorrhage(11.1%), per/tumoral edema(44.4%), tonsillar herniation(44.4%), hydrocephalus(88.9%) and calcification(44.4%). CONCLUSION: Medulloblastomas revealed low to intermediate signal intensity on Tl-weighted image and intermediate to moderately high signal intensity on T2-weighted image, relative to cerebellar white matter. Medulloblastomas were solid tumors with cystic necrosis, which showed inhomogeneous enhancement and subarachnoid disseminations to the intracranial and intraspinal spaces after Gd-DTPA enhancement. Gd-enhanced MR of brain and spine was an useful diagnostic modality in preoperative diagnosis and in staging of postoperative cases of medulloblastomas, which was superior to postcontrast CT or precontrast MR.
Brain* ; Diagnosis ; Gadolinium DTPA ; Humans ; Male ; Medulloblastoma ; Necrosis ; Retrospective Studies ; Spine*

PURPOSE: Pilocytic astrocytoma is a benign tumor predominantly arising from cerebellum in pediatric age. But it occasionally arises in supratentorium. We describe radiologic findings of supratentorial pilocytic astrocytoma. MATERIALS AND METHODS: Eleven CT and 7 MR examinations in 11 patients were retrospectively reviewed with attention to location, CT density, MR signal intensity, and degree and pattern of contrast enhancement on CT and MR. RESULTS: The tumors were located around the third ventricle (hypothalamus in three cases, optic chiasm in three cases) and in cerebral hemisphere (temporal lobe in three cases, frontal lobe in one case, thalamus in one case). On CT, the tumors were all sharply demarcated and rarely associated with edema. The tumors showed moderate to strong contrast enhancement. Necrosis appeared frequently in tumors around the third ventricle in contrast to frequent cyst formation in hemispheric masses. On MR, the tumors appeared hypo- or isointense on T1- weighted images and hyperintense on T2- weighted images. After administration of contrast agent, the tumors showed intense enhancement more than that of CT. CONCLUSION: The typical location and radiologic findings described above are helpful in the diagnosis of the supratentorial pilocytic astrocytoma.
Astrocytoma* ; Cerebellum ; Cerebrum ; Diagnosis ; Edema ; Frontal Lobe ; Humans ; Necrosis ; Optic Chiasm ; Retrospective Studies ; Thalamus ; Third Ventricle

The anatomical variations of 112 hypophysis and diaphragma sellae in Korean adult cadavers and coronal CT were studied. 1) The hypophysis was classified 4 types based on superior view. 2) The superior surface of the hypophysis was concave(65.9%) in cadavers and flat(55.3%) in CT. 3) The neural lobe was placed on the center of the posterior surface of the anterior lobe(72.3%). 4) The hypophysis was compressed by the internal carotid artery in 9.6%. 5) The mean A-P length, width and height of the hypophysis were 10.4mm, 14.2mm and 4.8mm in cadavers, respectively. The mean width and height in CT were 13.2mm and 5.0mm, respectively. 6) The width of the hypophysis was significantly different between man and woman. 7) The diaphragma sellae was concave or flat. 8) The diaphragmatic line was average 13.9mm in man and 14.6mm in woman. 9) The diaphragmatic foraman was circular or oval and the A-P diameter was greater than transverse one. 10) Type IIb that diaphragma sellae and hypophysis were concave according to Busch(1951) was 40.4%. 11) The empty sella was found in 14.4%.
Adult* ; Cadaver* ; Carotid Artery, Internal ; Female ; Humans ; Pituitary Gland* ; Pituitary Gland, Posterior

PURPOSE: This retrospective study was conducted to evaluate the value of adminstration of IV gadopentetate dimeglumine for MR imaging of tuberculous spondylitis. MATERIALS AND METHODS: The authors reviewed MR images both with and without contrast enhancement of 22 patients with tuberculous spondylitis. Evaluation of signal characteristics, enhancement patterns, and difference of delineation between pre- and postcontrast enhancement was made on 4 compartments the vertebral body, intervertebral disc, paravertebral space, and extradural space. RESULTS: The spinal tuberculous lesions revealed relatively low or isosignal intensity on T1-weighted image and high signal intensity on T2-weighted image. The tuberculous lesions of vertebral body showed enhancement of mixed pattern, and rim enhancement pattern was predominant in the other 3 compartment, suggesting abscess. The contrast enhanced MR image showed better demarcation of the extents of tuberculous lesions comparing with noncontrast image, especially at the vertebral body and intervertebral disc. The nature of tuberculous involvement was better visualized at the extradural space and paravertebral space on postcontrast image. CONCLUSION: We conclude Gd-DTPA enhanced MR image can give informations for more detailed delineation, extents, and nature of involvement in the tuberculous spondylitis.
Abscess ; Gadolinium DTPA ; Humans ; Intervertebral Disc ; Magnetic Resonance Imaging* ; Retrospective Studies ; Spondylitis*

No abstract available.
Nasal Cavity* ; Papilloma, Inverted* ; Paranasal Sinuses*