Streptococcus anginosus is a member of Streptococcus milleri group, and is found in the oral mucosa, respiratory tract, and gastrointestinal tract as normal flora. It can develop into a disease in patients with deteriorating clinical condition or with clinical risk factors. A previously healthy 15-year-old boy was admitted due to fever, abdominal discomfort and vomiting which lasted for 7 days. He had a history of dental procedure 1 day before the development of fever. He was diagnosed with acute acalculous cholecystitis based on the clinical, laboratory, and imaging finding, and S. anginosus was isolated from the blood culture. The patient was successfully treated with antibiotic therapy.
Acalculous Cholecystitis ; Adolescent ; Bacteremia ; Cholecystitis ; Fever ; Gastrointestinal Tract ; Humans ; Mouth Mucosa ; Respiratory System ; Risk Factors ; Streptococcus ; Streptococcus anginosus ; Streptococcus milleri Group ; Vomiting

Ameloblastic fibrosarcoma is an extremely rare variety of odontogenic tumor. It has not previously been reported in Korea. The tumor is composed of benign odontogenic epithelium with a mesenchymal part which exhibits the histologic features of fibrosarcoma. We have reported a case of amloblastic fibrosarcoma of the mandible in a 26-year-old man with swelling of right mandible for 2 weeks. The tumor showed yellowish ill-demarcated ulcerating mass involving right premolar and molar area. Light microscopy revealed irregularly arranged strands and islands of odontogenic epithelium surrounded by abundant mesenchymal tissue with the feature of fibrosarcoma. The fibrosarcoma cells were strong positive on immunostain for vimentin and ameloblastic cells were weakly positive for cytokeratin. S-100 and CEA were negative in both epithelial and sarcoma cells. The sarcoma cells were corresponding to fibroblasts on the electron microscopy with abundancy of RER and mitochondria and covering of basal lamina. Two types of virus like particles were distributed in the cytoplasm and nuclei of sarcoma cells. We treated the patient with surgery and chemotherapy. The recovery was uneventful and the prognosis is under observation.
Male ; Humans

This study was performed to investigate the effect of endotoxin to the CCl4-induced liver injury. Twelve Sprague-Dawley rats were intraperitoneally injected 1.6 g/kg CCl4 as control group. Another 24 rats were orally administrated 300 mg/kg of neomycin at 16 and 3 hours prior to CCl4 injection as experimental group. Twelve among them were intraperitoneally infected 1.0 mg/kg of endotoxin(E-Coli, 0111:B4, No L-2630, lipopolysaccharide, Sigma, USA) and CCl4 simultaneously for offsetting neomycin effect. The rats were sacrificed at 1, 4, 10, and 24 hours after CCl4 injection. The liver tissues from all experimental groups were observed by light and electron microscopy. The results obtained were summarized as follows: In the CCl4 only group, the hepatocytes revealed sweling of ER and mitochondria with many lipid droplet in the cytoplasm. Focal cellular necrosis was seen at the later phase. The Kupffer cells were activated and showed many cytoplasmic processes, secondary lysosomes, and vaculoles. The endothelial cells were edematous. Several neutrophils, platelets, and microthrombi were scattered in the sinusoid. In the neomycin-CCl4-endotoxin administrated group, both hepatocytic destruction and intrasinusoidal microthrombi formation were more pronounced. In the neomycin pretreated group, the hepatocytes revealed mild cellular destruction without necrosis. There is no intrasinusoidal microthrombi. According to these results, it would be concluded that the small dosage of gastrointestinal tract-derived endotoxin affects to the liver injury caused by CCl4. The synergistic effects of CCl4 and gastrointestinal tract-derived endotoxin which can not be detoxified by damaged Kupffer cells, may be more important in the pathogenesis of CCl4-induced liver injury.
Rats ; Animals

No abstract available in English.
Knee Prosthesis ; Knee

Hansen's disease(HD) is a chronic infectious disorder acquired by inoculation of Mycobacterium leprae. With the establishment of complex multidrug therapy, the incidence rate of leprosy patients has continually shown to decline by 90% compared to the incidence rate in the 1990s. However, the prevalence of the disease still remains high in southeast asian countries. Due to the rarity and diverse nature of cutaneous presentation, HD is often misdiagnosed with other dermatoses or infectious conditions. Especially, when a patient presents with unusual presentation with leprosy reaction with no classical feature such as sensory disorders and skin lesion, the diagnosis is further delayed with misguided treatments. Herein we present a 27-year-old Indonesian immigrant who displayed clinical features mimicking that of orbital cellulitis who was later diagnosed with borderline lepromatous leprosy through histologic and PCR confirmation, in light of alerting the probability of leprosy in immigrants with intractable skin presentations.
Adult ; Asian Continental Ancestry Group ; Diagnosis ; Emigrants and Immigrants ; Humans ; Incidence ; Leprosy ; Leprosy, Borderline ; Leprosy, Multibacillary ; Mycobacterium leprae ; Orbit ; Orbital Cellulitis ; Polymerase Chain Reaction ; Prevalence ; Sensation Disorders ; Skin ; Skin Diseases

PURPOSE: To analyze the clinical results and functional assessments after debridement arthroplasty for a stiff elbow. MATERIALS AND METHODS: 30 elbows from 30 patients, who underwent debridement arthroplasty for a stiff elbow caused by primary osteoarthritis and secondary causes such as post-traumatic osteoarthritis and synovial chondromatosis from December 1995 to April 2003, were analyzed. The mean follow-up period was 52 months (range: 24 months-8 years 5 months). Among the stiff elbows, primary osteoarthritis was the cause in 11 cases, secondary osteoarthritis due to an old trauma was the cause in 18 cases, and synovial chondromatosis was the cause in 1 case. There were 20 males and 10 females with a mean age of 36 years (range: 14-61 years) at operation. They all had pain during elbow motion. Debridement arthroplasty was performed using the posterior approach. The clinical results were evaluated according to differences in the preoperative and postoperative ROM of the elbow and Mayo Elbow Performance Score (MEPS). RESULTS: Postoperatively, the elbow ROM improved to an average 122 degrees(range: 90-130 degrees) in flexion, 11 degrees(range: 0-30 degrees) in extension, 68 degrees(range: 20-90 degrees) in internal rotation and 74 degrees(range: 20-90 degrees) in external rotation. The improvement in flexion and extension was statistically significant (p<0.05). On the final follow-up, only moderate pain was reported in one case and none or mild pain was reported in 29 cases. MEPS improved from an average of 57.3 points (range: 33-75) to 88.9 points (range: 67-100). And there were 17 excellent cases (56.7%), 10 good cases (33.3%), 3 fair cases (10%) and no poor case. CONCLUSION: The stiff elbows were successfully treated with debridement arthroplasty. Therefore, debridement arthroplasty can preserve a good clinical outcomes using skillful surgical procedures and postoperative rehabilitation.
Arthroplasty* ; Chondromatosis, Synovial ; Debridement* ; Elbow* ; Female ; Follow-Up Studies ; Humans ; Male ; Osteoarthritis ; Rehabilitation

OBJECTIVES: This study was performed to evaluate the relationship between radiation induced senescence-like changes of endothelial cells and blood-brain barrier disruption. MATERIALS AND METHODS: Radiation of 15 Gy was applied to a monolayer culture of bovine aortic endothelial cells (BAEC). The morphological changes were observed over 19 weeks. An artificial blood-brain barrier (BBB) model was constructed using the Transwell(R) and co-culture of the BAEC with C6 glioma cells. After treatment with the same dose of radiation, changes in the BBB were observed by measurement of the trans-endothelial electrical resistance (TEER). RESULTS: Senescence-like changes of the endothelial cells appeared 1 week after irradiation; it was most prominent during the third week and replacement by normal endothelial cells was noted from the seventh week. The recovered normal endothelial monolayer was maintained until the 19th week. Senescence-like endothelial cells showed positive staining with senescence-associated beta-galactosidase (SA-beta-gal). In the Transwell(R), the TEER began to decrease 1 week after irradiation, and the decreased resistance reached its peak 18 days after irradiation, and then began to recover to some degree. CONCLUSION : After application of radiation (15 Gy), senescence-like changes of the endothelial cells were observed in the monolayer culture. These findings demonstrated good correlation with the disruption of blood-brain barrier in an in-vitro model of the BBB.
Aging ; beta-Galactosidase ; Blood-Brain Barrier ; Coculture Techniques ; Electric Impedance ; Endothelial Cells ; Glioma

No abstract available.
Magnetic Resonance Imaging ; Pulmonary Artery ; Pulmonary Embolism* ; Radionuclide Imaging

We report a rare case of an idiopathic pseudoaneurysm causing intraventricular hemorrhage (IVH). A 28-year-old man presented with sudden onset of severe headache. He underwent external ventricular drainage for an isolated IVH in the right lateral ventricle. Digital subtraction angiography (DSA) revealed that the aneurysm (7.5x4.5 mm) arose from the distal part of the medial lenticulostriate artery. Following removal of the external ventricular drainage catheter, the aneurysm decreased in size (4.0x2.3 mm). However, follow-up DSA revealed a slightly enlarged aneurysm (4.2x3.2 mm) with morphologic change. The aneurysm was clipped via the interhemispheric transcallosal approach, but postoperative DSA revealed a residual aneurysm sac beside the clips. Given the risk of rebleeding, a second operation was planned for complete resection of the aneurysm. After revised craniotomy and careful dissection of the caudate nucleus, the aneurysm sac was completely resected. Histopathological examination revealed that the aneurysm was a pseudoaneurysm. The patient recovered without any neurological sequel and was discharged. To the best of our knowledge, this is the first reported case of an idiopathic lenticulostriate artery pseudoaneurysm protruding into the right lateral ventricle and causing an IVH that was successfully treated with microsurgical resection.
Adult ; Aneurysm ; Aneurysm, False ; Angiography, Digital Subtraction ; Arteries ; Catheters ; Caudate Nucleus ; Craniotomy ; Drainage ; Follow-Up Studies ; Headache ; Hemorrhage ; Humans ; Lateral Ventricles

Nontuberculous mycobacterial (NTM) infections are an increasingly recognized cause of chronic lung disease in immunocompetent adults, and the M. avium complex, M. kansasii, and a rapidly growing mycobacteria such as M. abscessus, M. fortuitum, and M. chelonae account for most of the pathogens involved. Because the clinical features of NTM disease are not distinguishable from those of tuberculosis, and NTM are ubiquitous in the environment, diagnosis requires that the bacilli are isolated and identified. NTM diseases have been difficult to treat, though since the introduction of new macrolides, the outcome for patients with some NTM diseases has improved significantly. For correct diagnosis and the successful treatment of NTM pulmonary disease, a knowledge of the full spectrum of clinical and radiological findings is important.
Adult ; Aged ; Female ; Human ; Immunocompromised Host/*immunology ; Lung Diseases/immunology/*microbiology/*radiography ; Male ; Middle Age ; Mycobacteria, Atypical/*isolation & purification ; Mycobacterium Infections, Atypical/immunology/*radiography