Chemotherapeutic agents were evaluated for their effect on the development of urinary bladder tumors, induced by N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN) in female Sprague-Dawley rats. For 16 weeks, 0.05% BBN was administered orally, and then chemotherapeutic agents (adriamycin and cisplatin) were injected intraperitoneally for 12 weeks. In our preliminary experimental series, an experimental bladder tumor model induced by BBN was useful in evaluating the effectiveness of chemotherapeutic agents. Cisplatin appears to be effective in inhibiting precancerous histologic changes and carcinoma in rat urinary bladder mucosa by BBN. However, the effectiveness of adriamycin was inconclusive.
Animals ; Carcinogenesis* ; Cisplatin ; Doxorubicin ; Female ; Humans ; Injections, Intraperitoneal* ; Mucous Membrane ; Rats* ; Rats, Sprague-Dawley ; Urinary Bladder Neoplasms ; Urinary Bladder*

Urodynamics is a neurourolgic diagnostic tool concerned with identification and measurement of physiologic and pathologic factors involved in the storage, transportation, and evacuation of urine. It plays an important role in the diagnosis, management of neurogenic bladder and its use has gradually increased. But a disparity between clinical and urodynamic findings is commonly found and its application to the clinical management of neurogenic bladder is practically as well embarrassing as its reading. We analyzed the results of 81 cases of neurogenic bladder with urodynamic study. Urodynamically, there were 18 cases showing D. hyperreflexia with DSD, 10 cases D. Hyperreflexia without DSD, 36 cases D. areflexia without low compliance, and 17 case D. areflexia with low compliance. A disparity between the clinical and urodynamic :assessment was noted in 28 cases( 35%). Clinically severe symptom with complication was particularly common in D. hyperreflexia with DSD, D. areflexia with low compliance and catheter indwelling patients.
Catheters ; Compliance ; Diagnosis ; Humans ; Reflex, Abnormal ; Transportation ; Urinary Bladder, Neurogenic* ; Urodynamics

The primary Malignant lymphoma of the orbit is a relatiely uncommon condition. The authers experienced a case of primary orbital malignant lymphoma in 59 year old female. The malgnant lymphocytic lymphoma was confirmed by excisional biopsy, and local radiation theraphy was followed. There has been no sign of recurrence at the orbital region and the other sites for postoperative 12 months.
Biopsy ; Female ; Humans ; Leukemia, Lymphocytic, Chronic, B-Cell ; Lymphoma* ; Middle Aged ; Orbit* ; Recurrence

The primary Malignant lymphoma of the orbit is a relatiely uncommon condition. The authers experienced a case of primary orbital malignant lymphoma in 59 year old female. The malgnant lymphocytic lymphoma was confirmed by excisional biopsy, and local radiation theraphy was followed. There has been no sign of recurrence at the orbital region and the other sites for postoperative 12 months.
Biopsy ; Female ; Humans ; Leukemia, Lymphocytic, Chronic, B-Cell ; Lymphoma* ; Middle Aged ; Orbit* ; Recurrence

PURPOSE: The purposes of this study were to evaluate the usefulness and limitations of chest radiographs in scoliosis screening and to compare these results with those of thoraco-lumbar standing radiographs (TLSR). MATERIALS AND METHODS: During Korean conscription, 419 males were retrospectively examined using both chest radiographs and TLSR to confirm the scoliosis and Cobb angle at the Regional Military Manpower. We compared the types of spinal curves and Cobb angles as measured from different radiographs. RESULTS: In the pattern of spinal curves, the overall matching rate of chest radiographs using TLSR was about 58.2% (244 of 419 cases). Cobb angle differences between chest radiographs and TLSR with meaningful difference was observed in 156 cases (37.2%); a relatively high proportion (9.5%) of Cobb angle differences more than 10 degrees was also observed. The matching rate of both spinal curve types and Cobb angle accuracy between chest radiographs and TLSR was 27.9% (117 among 419 cases). Chest radiographs for scoliosis screening were observed with 93.94% of sensitivity and 61.67% of specificity in thoracic curves; however, less than 40% of sensitivity (38.27%, 20.00%, and 25.80%) and more than 95% of specificity (97.34%, 99.69%, and 98.45%) were observed in thoraco-lumbar, lumbar, and double major curves, respectively. CONCLUSION: The accuracy of chest radiographs for scoliosis screening was low. The incidence of thoracic curve scoliosis was overestimated and lumbar curve scoliosis was easily missed by chest radiography. Scoliosis screening using chest radiography has limited values, nevertheless, it is useful method for detecting thoracic curve scoliosis.
Adult ; Humans ; Male ; Radiography, Thoracic/methods ; Retrospective Studies ; Scoliosis/*diagnosis/*radiography ; Young Adult

STUDY DESIGN: Prospective, randomized, controlled human study. PURPOSE: We checked the proportion of missed syrinx diagnoses among the examinees of the Korean military conscription. OVERVIEW OF LITERATURE: A syrinx is a fluid-filled cavity within the spinal cord or brain stem and causes various neurological symptoms. A syrinx could easily be diagnosed by magnetic resonance image (MRI), but missed diagnoses seldom occur. METHODS: In this study, we reviewed 103 cases using cervical images, cervical MRI, or whole spine sagittal MRI, and syrinxes was observed in 18 of these cases. A review of medical certificates or interviews was conducted, and the proportion of syrinx diagnoses was calculated. RESULTS: The proportion of syrinx diagnoses was about 66.7% (12 cases among 18). Missed diagnoses were not the result of the length of the syrinx, but due to the type of image used for the initial diagnosis. CONCLUSIONS: The missed diagnosis proportion of the syrinx is relatively high, therefore, a more careful imaging review is recommended.
Brain Stem ; Humans ; Korea ; Magnetic Resonance Spectroscopy ; Military Personnel ; Prospective Studies ; Spinal Cord ; Spine

BACKGROUND: The purpose of this study was to investigate whether brain AT1 receptor stimulation contributes as a hypertensive mechanism to deoxycorticosterone acetate (DOCA)-salt hypertension. METHODS: 1) Acute injection:Losartan (1 mg/4 uL) or artificial cerebrospinal fluid (aCSF) was injected into the lateral cerebral ventricle (icv) of conscious control uninephrectomized Wistar rats or rats with DOCA-salt at 2 or 4 weeks, and mean arterial pressure (MAP) and heart rates (HR) were recorded. 2) Chronic injection:Using osmotic minipump, losartan (1 mg/kg/d) or aCSF was injected to a sham group or three DOCA-salt rat groups [icv-aCSF, icv-losartan, sc-losartan (subcutaneous) groups] for 4 weeks, after which the MAP and HR were recorded in addition to the weights of the left (LV) and right ventricles (RV) and kidneys. RESULTS: 1) Acute injection: In rats treated with DOCA-salt, resting MAP significantly increased compared to the control group [144+/-6 mmHg (2 weeks), 170+/-5 mmHg (4 weeks) vs 115-120 mmHg (controls)]. MAP decreased significantly (2 weeks, 4 weeks) at 4, 8, 24 hours after icv injection of losartan to the level of the control group. 2) Chronic injection: The general trend showed that MAP decreased more in the icv-losartan group than in the icv-aCSF group (127+/-15.2 mmHg vs 141.1+/-5.5 mmHg, p=0.0578). In all DOCA-salt groups, no differences in RV weight were found. In the icv-aCSF and sclosartan groups, the kidney weight increased compared to the control group, but there was no difference in LV and kidney weight between the icv-losartan group and the control group. CONCLUSION: Normalization of MAP after acute or chronic icv administration of the AT1 receptor antagonist suggests that the stimulation of the brain AT1 receptor plays a significant role in the development and maintenance of hypertension in the DOCA-salt hypertensive rat model. Losartan icv injection appeared to have a protective effect on the heart and kidney.
Angiotensin II ; Animals ; Arterial Pressure ; Brain ; Cerebral Ventricles ; Cerebrospinal Fluid ; Desoxycorticosterone ; Heart ; Heart Rate ; Heart Ventricles ; Hypertension* ; Kidney ; Losartan* ; Models, Animal ; Rats* ; Rats, Wistar ; Receptor, Angiotensin, Type 1 ; Weights and Measures

OBJECTIVE: Many studies have suggested that leptin is a possible cause of atherosclerosis and is proposed as a cardiovascular risk factor in obese patients. Several studies have shown that serum leptin is associated with pulse wave velocity (PWV) and carotid intima-media thickness (IMT). But the relevance of serum leptin levels for predicting incident cardiovascular disease is less clear. In this study, we investigated the relationship between serum leptin levels and aortic PWV, carotid IMT in type 2 diabetes (T2DM) patients. METHODS: Patients with end-stage renal disease or advanced atherosclerosis, systemic infection were excluded. A total of 116 patients (60 male/56 female; age, 59+/-14 years) were included. Serum leptin levels, aortic PWV and carotid IMT were measured. RESULTS: Aortic PWV was significantly associated with age (r=0.28, P<0.005). Carotid IMT was significantly related to age (r=0.46, P<0.001), low density lipoprotein (LDL) cholesterol (r=0.22, P<0.05), lipoprotein (a) (r=0.23, P<0.05) and estimated glomerular filteration rate (r=-0.348, P<0.01). There was no correlation between leptin and aortic PWV or carotid IMT. In multivariate analyses, aortic PWV was associated with age (P=0.007). Carotid IMT was significantly related to age (P<0.001), LDL cholesterol (P=0.01). CONCLUSION: Serum leptin was not associated with aortic PWV or carotid IMT in T2DM patients.
Atherosclerosis ; Cardiovascular Diseases ; Carotid Intima-Media Thickness ; Cholesterol ; Cholesterol, LDL ; Diabetes Mellitus, Type 2 ; Humans ; Kidney Failure, Chronic ; Leptin ; Lipoprotein(a) ; Lipoproteins ; Multivariate Analysis ; Pulse Wave Analysis ; Risk Factors

Regardless of an appropriate radiation therapy administered to a patient with a brain tumor, clinical and radiological evidence of progression may still develop because of a recurrence of the tumor and/or radiation necrosis, or even rarely, a radiation induced neoplasm. The evaluation of tumor recurrence and radiation-induced necrosis presents a diagnostic challenge. A thirty eight year old woman was treated for a focal motor seizure on the right side of her face.with a fractionated external beam radiotherapy under the impression of cystic astrocytoma in the left frontoparietal region. After 6 months, she developed a headache, nausea and vomiting, dysphagia, and secondary generalized seizure. A follow-up brain MRI showed a high signal mass lesion in a T2 weighted image and a fluorodeoxyglucose PET revealed hypometabolism in the left frontoparietal lobe, suggesting radionecrosis. It was confirmed as radionecrosis with an expanding edema by open biopsy. We report a cerebral radiation necrosis mimicking recurrent brain tumor.
Astrocytoma ; Biopsy ; Brain ; Brain Neoplasms* ; Deglutition Disorders ; Edema ; Female ; Follow-Up Studies ; Headache ; Humans ; Magnetic Resonance Imaging ; Nausea ; Necrosis* ; Radiotherapy ; Recurrence ; Seizures ; Vomiting

A patients with atlantoaixial instability and osodontoideum underwent atlantoaixial fusion (Harms and Melcher technique) with demineralized bone matrix. But, unfortunately, the both pedicle screws in C2 were fractured within 9 weeks follow-up periods after several suspected episode of neck hyper-flexion. Fractured screws were not contact to occipital bone in several imaging studies, but it could irritate the occipital bone when neck extension because the relatively close distance between the occipital bone and C1 posterior arch. The patient underwent revision operation with translaminar screw fixation with autologus iliac bone graft. Postsurgical course were uneventful except donor site pain, but the bony fusion was not satisfied after 4 months follow-up. The patient re-underwent revision operation in other hospital. Continuous complication after atlantoaixial fusion is rare, but the clinical course could be unlucky to patients. Postoperative immobilization could be important to prevent the unintended clinical course of patients.
Bone Matrix ; Follow-Up Studies ; Humans ; Immobilization ; Neck ; Occipital Bone ; Tissue Donors ; Transplants