About 20 or more cases of seminal vesicle cyst were reported up to nowadays, but CT findings are not yetdescribed. Seminal visicle cyst is often associated with ipsilateral renal agenesis, and the mechanism ofdevelopment is based on embryogenesis. A 26 year old male was confirmed as seminal vesicle cyst in S.N.U.H. inNov. 1981. CT of the seminal vesicle cyst revealed huge, globular and homogeneous mass with well-circumscribedsmooth margin between urinary bladder and rectum. Adilated tubular structure was also found lateral to the hugecystic mass. The ipsilateral kidney was not found in any level of abdomen from the diaphragmetic dome to thesymphisis pubis.
Abdomen ; Embryonic Development ; Female ; Humans ; Kidney ; Male ; Pregnancy ; Pubic Bone ; Rectum ; Seminal Vesicles ; Urinary Bladder

No abstract available.
Hypophysectomy*

PURPOSE: To assess the spinal canal and neural foraminal stenosis associated with spondylolisthesis on MR imaging. MATERIALS AND METHODS: We retrospectively analysed MR findings of 63 cases of spondylolisthesis(degenerative type:23 cases, isthmic type:40 cases) regarding the type and grade of spondylolisthesis, prensence or absence of associated spinal canal stenosis, and the severity of associated neural foraminal stenosis. RESULTS: Central canal stenosis were more frequent in degenerative type(91%) than isthmic type(33%), and more frequent in grade II spondylolisthesis of degenerative type(100%) and isthmic type(89%) than in grade spondylolisthesis of degenerative type(45%) and isthmic type(20%). There was positive correlation between the severity of neural foraminal stenosis and the grade of spondylolisthesis, whereas there was no significant difference between degenerative and isthmic types. CONCLUSION: Degenerative spondylolisthesis were frequently associated with central canal stenosis more than isthmic type. When the grade of spondylolisthesis was higher, it was more frequently associated with central canal stenosis and severe neural foraminal stenosis.
Constriction, Pathologic* ; Magnetic Resonance Imaging ; Retrospective Studies ; Spinal Canal ; Spondylolisthesis*

This study was designed to evaluate the potential applicability of magnetic resonance imaging (MRI) for the diagnosis of acute renal vein thrombosis. Renal vein thrombosis was experimentally induced by surgical ligation of the left renal vein in a total of 21 rabbits. MRI was performed with a 0.5 Tesla superconductive magnetic system. Spin echo technique was used with varying TR and TE parameters. Spin echo images of the rabbit kidney were analysed for morphology and signal intensity. T1 and T2 relaxation times of the renal cortex and medulla were calculated from the images. After venous ligation, kidneys became enlarged. Low signal band along the outer medulla in T2 weighted images were characteristically shown from 1 hour to 3 days after ligation, Changes of cortex to medullar contrast (CMC) values were significant (p<0.05) in T1 - and T2- weighted images of the ligated side. T1 and T2 relaxation times were significantly prolonged (p<0.05) on the ligated side, both in the cortex and medulla from 1 hour to 2 weeks after the ligation, while T2 relaxation time on the contralateral side was significantly prolonged both in the cortex and medulla 2 weeks after venous ligation. The most useful MRI criteria for the diagnosis of renal vein thrombosis were enlarged renal size, and the low signal band along the outer medulla of ligated kidney. The relative intensity difference between cortex and medulla (CMC) in T1-and T2-weighted images, and T1 and T2 relaxation times were suggested to be the useful MR parameters for the diagnosis of acute renal vein thrombosis.
Diagnosis ; Kidney* ; Ligation* ; Magnetic Resonance Imaging* ; Rabbits ; Relaxation ; Renal Veins* ; Thrombosis

This study was designed to evaluate the potential applicability of magnetic resonance imaging (MRI) for the diagnosis of acute renal vein thrombosis. Renal vein thrombosis was experimentally induced by surgical ligation of the left renal vein in a total of 21 rabbits. MRI was performed with a 0.5 Tesla superconductive magnetic system. Spin echo technique was used with varying TR and TE parameters. Spin echo images of the rabbit kidney were analysed for morphology and signal intensity. T1 and T2 relaxation times of the renal cortex and medulla were calculated from the images. After venous ligation, kidneys became enlarged. Low signal band along the outer medulla in T2 weighted images were characteristically shown from 1 hour to 3 days after ligation, Changes of cortex to medullar contrast (CMC) values were significant (p<0.05) in T1 - and T2- weighted images of the ligated side. T1 and T2 relaxation times were significantly prolonged (p<0.05) on the ligated side, both in the cortex and medulla from 1 hour to 2 weeks after the ligation, while T2 relaxation time on the contralateral side was significantly prolonged both in the cortex and medulla 2 weeks after venous ligation. The most useful MRI criteria for the diagnosis of renal vein thrombosis were enlarged renal size, and the low signal band along the outer medulla of ligated kidney. The relative intensity difference between cortex and medulla (CMC) in T1-and T2-weighted images, and T1 and T2 relaxation times were suggested to be the useful MR parameters for the diagnosis of acute renal vein thrombosis.
Diagnosis ; Kidney* ; Ligation* ; Magnetic Resonance Imaging* ; Rabbits ; Relaxation ; Renal Veins* ; Thrombosis

To evaluate the radiographic characteristics of osteochondritis dissecans (OCD) and useful parameter for predicting mechanical stability, we retrospectively analysed 26 plain radiographic examinations and seven MR imagings in 28 cases of OCD in 24 patients. Typical radiologic findings were osteochondral defect with sclerotic rim of variable thickeness and osteochondral fragment. Sites of osteochondral defect were medial (35.9%) or lateral (32%) femoral chondyle and medial (7.1%) or lateral (25%) side of talar dome. Sclerotic rim was seen in 24 cases (85%) and osteochondral fragments including nine loose bodies were seen in 21 cases (75%). The size of osteochondral defect with unstable fragment (average 2.05cm) and loose body (2.04cm) in the knee joint were similar to, but statistically larger than that with stable fragment (1.35cm). All osteochondral defects were well visualized on MR images. Abnormalities of articular cartilage and effusion in the interface between the parent bone and fragment were seem in five cases of which there were confirmed three unstable cases arthroscopically. We conclude that size of defect may be a good parameter for predicting mechanical stability and MRI may be useful in the diagnosis of OCD and determining the methods of treatment.
Cartilage, Articular ; Diagnosis ; Humans ; Knee Joint ; Magnetic Resonance Imaging ; Osteochondritis Dissecans* ; Osteochondritis* ; Parents ; Retrospective Studies

A case of subcorneal pustular dermatosis is reported. This 39 year old woman repeatedly developed the erythematous vesicopustular eruptions on the trunk and the extremeties with scvere tiching sensation for about 7 months. Histological examinstion revealed the subcorneal pustules and the mild inflammatory cell infiltration, so tetracycline 1500mg. And chloramphenicol 1000mg. Were adminiistered without benefit. The second biopsy was obtained and it revealed as the subcorneal pustular dermatosis. Therapy with DDS was instituted and was followed by marked clearing of the lesions.
Adult ; Biopsy ; Chloramphenicol ; Female ; Humans ; Sensation ; Skin Diseases* ; Skin Diseases, Vesiculobullous ; Tetracycline

No abstract available.
Congenital Abnormalities* ; Head*

The chest X-ray findings of 20 cases of pulmonary opportunistic infections were analyzed according tocausative agents. The results we as follows; 1. Final diagnoses of 20 cases of opportunistic infections weretuberculosis in 6 cases, pneumocystis carinii pneumonia in 5 cases, bacterial infection in 7 cases, and fungalinfection in 2 cases. 2. The underlying diseases were leukemia in 6 cases, kidney transplantation in 6 cases,lymphoma in 3 cases, nephrotic syndrome in 1 case, nasopharyngeal cancer in 1 case, multiple myeloma in 1 case,agranulocytosis in 1 case, and hypogammaglobulinemia in 1 case. 3. In tuberculosis, all the 6 cases showed severemanifestations such as miliary tuberculosis, tuberculous pneumonia, moderately advanced tuberculosis andtuberculous pericarditis. 4. In pneumocystis carinii pneumonia, the most frequent findings were bilateral alveolardensities and peripheral field of the lung was saved in most cases. 5. In 2 cases of fungal infections bilatarealmultiple cavitary nodules were noted. 6. In cases of bacterial infection there were more cases of gram negativeinfection than gram positive and 2 cases of pseudomonas revealed bilateral multiple cavitary nodules.
Agammaglobulinemia ; Bacterial Infections ; Diagnosis ; Kidney Transplantation ; Leukemia ; Lung ; Multiple Myeloma ; Nasopharyngeal Neoplasms ; Nephrotic Syndrome ; Opportunistic Infections ; Pericarditis ; Pneumonia ; Pneumonia, Pneumocystis ; Pseudomonas ; Thorax ; Tuberculosis ; Tuberculosis, Miliary

No abstract available.
Stents*