PURPOSE: Algorithms to get cross-sectional bone density pattern(transverse histogram) to predict the loosening of hip prosthesis using DXA(Dual X-ray Absorptiometry) have been developed. We performed this study to analyze the correlation between radiologic findings and densitometric pattern of the THRA(Total Hip Replacement Arthroplasty) patients. MATERIALS AND METHODS: Thirty-six hips of 32 THRA patients were evaluated. The duration between THRA and DXA was from 1 year 7 months to 15 years. On transverse histogram, the periprosthetic bone density patterns were classified as 3 types;type I, rigid fixation in 17, type II, definite loosening in 8, and type III, partial loosening in 11 cases. Surgical findings, plain X-ray findnings and transverse histogram using DXA were correlated. RESULTS: Among 14 cases performing revision for acetabular prosthesis loosening, 5 cases revealed loosening of fernoral stems while 9 cases revealed rigid fixation of femoral stems. Sensitivity was 100% for either plain X-ray or DXA. Specificity was 88%, 77% for plain X-ray and DXA respectively. CONCLUSION: This preliminary study reveals that periprosthetic bone density pattern on transverse histogram on DXA may be useful in the evaluation of the loosening. However, further study will be needed for clinical application.
Acetabulum ; Arthroplasty, Replacement, Hip* ; Bone Density ; Hip ; Hip Prosthesis ; Humans ; Prosthesis Failure ; Sensitivity and Specificity

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

Hemangioblastomas are low-grade, highly vascular tumors that are usually associated with von Hippel-Lindau syndrome. Hemangioblastomas most commonly occur in the cerebellum, and intradural extramedullary hemangioblastoma of the cauda equina is very rare, especially in patients without von Hippel-Lindau syndrome. Herein, we report a case of intradural extramedullary hemangioblastoma of the cauda equina that was not associated with von HippelLindau syndrome, with a focus on its imaging characteristics and differential diagnoses. We compared the clinical presentation and imaging features of our case with those of previously reported cases in the review of the literature.

Hibernoma is a rare benign tumor that arises from vestiges of brown fat. Spinal intraosseous hibernoma has only recently been described in the literature, and only 12 cases have been reported to date due to its extreme rarity. Here, we report the case of a patient who was incidentally diagnosed with an intraosseous hibernoma in the thoracic spine, following a diverse imaging work-up and pathologic confirmation. We correlate the clinical presentation and imaging features of our case with those of previously reported cases during our review of the literature.

Hemangioblastomas are low-grade, highly vascular tumors that are usually associated with von Hippel-Lindau syndrome. Hemangioblastomas most commonly occur in the cerebellum, and intradural extramedullary hemangioblastoma of the cauda equina is very rare, especially in patients without von Hippel-Lindau syndrome. Herein, we report a case of intradural extramedullary hemangioblastoma of the cauda equina that was not associated with von HippelLindau syndrome, with a focus on its imaging characteristics and differential diagnoses. We compared the clinical presentation and imaging features of our case with those of previously reported cases in the review of the literature.

No abstract available.
Female ; Ovary* ; Teratoma*

A 42-year-old male was admitted to our clinic on May 4, 1980, because of slight neck stiffness, quadriparesis and urinary difficulty. On admission, neurological examination revealed alert mental state, slight neck stiffness, quadriparesis and loss of pain and temperature sense below the level of C3 sensory dermatome. All deep tendon reflexes were hyperactive and Babinski's sign was positive. Roentgenographic examination of the cervical spine showed widened interpedicular distance at C5 to C7 in A-P view. Myelogram disclosed widening of the dye column at C4 to T1 vertebral level, suggesting intramedullary tumor. Laminectomy was performed from the C5 to T2. The cord appeared to be widened and swollen at the C6-7 segment level. 1ml of yellowish pus was aspirated from the distended spinal cord at the C6 level. Mid-line posterior myelotomy was performed and hard cavity wall was visible. Upon incision of cavity wall, about 5ml of yellowish purulent pus exuded, allowing the cord to become "flaccid". The abscess cavity was irrigated with saline and penicillin solutions and a small rubber drain catheter was placed in the abscess cavity. The organism from the abscess was identified as Staphylococcus aureus. Postoperative course was uneventful. Antibiotic therapy was continued for four weeks after operation. The patient's condition was much improved and he could walk with assistance on discharge time.
Abscess* ; Adult ; Catheters ; Humans ; Laminectomy ; Male ; Neck ; Neurologic Examination ; Penicillins ; Quadriplegia ; Reflex, Babinski ; Reflex, Stretch ; Rubber ; Spinal Cord ; Spine ; Staphylococcus aureus ; Suppuration ; Thermosensing

BACKGROUND: The aim of this study was to evaluate antibiotic consumption by adult patients at a single university hospital in Korea between 2001 and 2012. METHODS: We used the 2004 World Health Organization Anatomical Therapeutic Chemical Classification System definition of defined daily doses (DDD) per 1,000 patient-days to calculate the annual antibiotic consumption for 18 antibiotic groups. Chi-square linear-by-linear analysis was performed to evaluate antibiotic consumption trends for each group. RESULTS: Average annual antibiotic consumption during 2001-2012 was 644.6 DDD/1,000 patient-days (standard deviation, 33.3 DDD/1,000 patient-days). Although no statistically significant change was observed during the study period, consumption of first- and second-generation cephalosporins, and aminoglycosides was significantly decreased, while that of beta-lactam/beta-lactamase inhibitors, fourth-generation cephalosporins, carbapenem, glycopeptide, linezolid, colistin, and quinolone increased significantly. CONCLUSION: The total amount of prescribed antibiotics did not change, but the use of broad-spectrum antibiotics increased during the study period.
Adult ; Aminoglycosides ; Anti-Bacterial Agents ; Cephalosporins ; Classification ; Colistin ; Hospitals, University ; Humans ; Korea ; World Health Organization ; Linezolid

Primary germ cell tumors of the mediastinum are rare, accounting 1-5% among all germ cell tumors and 10% of all neoplasms in this area. Approximately 85% of these tumors occur in men with a mean age 29 years. These tumors are mainly found in the anterior mediastinum and appear grossly as large lobulated masses. They are frequently invasive at the time of diagnosis and almost 90% of patients are symptomatic. Primary nonseminomatous germ cell tumor arising in the posterior mediastinum is very rare. We report a case of 37- year old male arising from the posterior mediastinum. Serum tumors markers including alpha-fetoprotein and beta-hCG which are usually elevated in germ cell tumor were not elevated. He was found to have a primary mediastinal embryonal carcinoma with pulmonary metastasis at open exploration. He was treated with debulking surgery and cisplatin-based chemotherapy, died of sepsis after 15 months postoperatively.
alpha-Fetoproteins ; Carcinoma, Embryonal* ; Diagnosis ; Drug Therapy ; Humans ; Male ; Mediastinum* ; Neoplasm Metastasis ; Neoplasms, Germ Cell and Embryonal ; Sepsis

BACKGROUND: Transthoracic fine needle aspiration and biopsy(TNAB) has become a frequently used technique in the investigation of the intrathoracic lesions because of its safety, reliability, and accuracy. METHOD: Data on 125 patients who underwent TNAB from 1990 through 1994 were studied to determine the diagnostic sensitivity, accuracy and complications of this procedure as related to lesion type and location. RESULTS: 1. The over-all diagnostic sensitivity of TNAB was 61.6%(77 of 125 patients). 2. The diagnostic yields were as high as 89.9% for malignant lesions, but a specific diagnosis of benign lesions were obtained only in 30% of benign lung lesions. 3. The correlation between results of TNAB cytology and of final histology was as high as 88.2%. 4. Lung lesions that were greater than 3cm in size had a higher proportion of correct diagnosis(73.3%) as compared with lesions 3cm or less in size(38.1%). But there was no significant difference between the central and peripheral lung lesions. 5. There were no serious complications to TNAB. In 12.8% of the procedures a pneumothorax developed, indicating a chest tube in 1.6% of the procedures. In 2 cases, minimal hemoptysis developed which did not require treatment. CONCLUSION: In our experience, TNAB represents a minor and safe procedure, which permits a direct approach to localized malignant lung lesions with a high degree of accuracy.
Biopsy* ; Biopsy, Fine-Needle ; Chest Tubes ; Diagnosis ; Hemoptysis ; Humans ; Lung* ; Pneumothorax