The type-specific PCR and the sequence analysis of 56 kDa gene of Orientia tsutsugamushi infected in field rodents specimens have shown intratypic genetic heterogeneity in genotype Karp. In sequence comparison, this genetic heterogeneity was mainly due to insertion or deletion of a repeated unit in variable domain I (VDI) region. These results suggested that genetic duplication or deletion of the specific sequence rnight be involved in intratypic genetic heterogeneity of Orientia tsutsugamushi.
Genetic Heterogeneity* ; Genotype* ; Orientia tsutsugamushi* ; Polymerase Chain Reaction ; Rodentia ; Sequence Analysis

No Abstract Available.
Arthroplasty* ; Knee*

The 86 strains of field rodents captured in Chollanamdo were analyzed its infection rates of Orientia tsutsugamushi by nested PCR. The detection rate of O. tsutsugamushi was 14.3 % in A. agrarius whereas O. tsutsugamushi could not be detected in C. lasiura. In locality, the rodents captured in the mountainous area showed higher detection rate than suburban area. In the case of detection rate by organs, the spleen was most appropriate specimen, but in two cases, O. tsutsugamushi could be detected in only kidney specimens. The major serotype of detected O. tsutsugamushi was serotype Karp, but four cases were serotype Boryong. These serotypes were confirmed by nucleotide sequence determination of amplified PCR products. In conclusion, the serotype Karp was the major O. tsutsugamushi in Chollanamdo.
Base Sequence ; Chungcheongnam-do ; Jeollanam-do* ; Kidney ; Orientia tsutsugamushi* ; Polymerase Chain Reaction* ; Rodentia* ; Spleen

PURPOSE: We evaluated the MR and CT findings of the masticator space lesions in order to identify the differences among the malignant and benign tumors and infectious conditions. MATERIALS AND METHODS: MR and CT findings in 46 cases with proven masticator space lesions were reviewed retrospectively. We analysed the involvement of masticator muscles, adjacent spaces, orbit and intracrahium, homogeneity, necrosis, cystic changes, growth patterns, calcifications, enhancement patterns, MR signal intensity, and CT attenuation. RESULTS: Among the 29 cases of malignant tumors, seven cases were mandibular tumors including four chondrosarcomas, and 22 cases were extramandibular tumors. Malignant tumors of mandibular origin showed large masses with severe bone destruction and epicenter of mandible. Extramandiblular malignant tumors showed the epicenter out of the mandible and less severe bone destruction than mandibular tumors: Among the nine benign tumors, four cases were ameloblastomas which showed the well-defined masses and the expansion of the mandible, and four cases were extramandibular tumors which showed well-marginated extramandibular masses with no bone destruction. Among the eight infectious conditions, five cases were mandibular osteomyelitis with or without abscess formations, and the other three cases were infections from adjacent soft tissue or limited to the soft tissue. CONCLUSION: By careful observations of growth patterns, involvement of the masticator and adjacent spaces, bone changes, and epicenter of the lesions, one can discriminate a mandibular lesion from an extramandibular lesion. With this approach, it is thought to be easier to suggest a dignosis among a wide spectrum of masticator lesions.
Abscess ; Ameloblastoma ; Chondrosarcoma ; Magnetic Resonance Imaging* ; Mandible ; Muscles ; Necrosis ; Orbit ; Osteomyelitis ; Retrospective Studies

No abstract available.
Leiomyoma* ; Vagina*

PURPOSE: To evaluate the diagnostic value of radiologic studies in the Cushing's disease MATERIALS AND METHODS: We analyzed retrospectively the CT(n=19, dynamic CT was not perfomed), MR (n=23, dynamic MR in 2 cases), and the results of inferior petrosal sinus sampling(IPSS)(n=13) in 25 patients(19 women, 6men, age range 16-58, mean 32.2) with pathologically-confirmed ACTH secreting pituitary adenoma. We analyzed the radiologic findings and determined how accurately each method could detect and lateralize the lesion within the pituitary gland. The results were compared with the surgical findings and with each other. RESULTS: Seven patients(28%) out of 25 had macroadenomas and the lesions were detected and correctly diagnosed by CT and MR in all. Eighteen patients(72%) had microadenoma. In patients with microadenoma the sensitivity was 38.5%(5/13) in CT, 64.7%(11/17) in MR, 90.9%(10/11) in IPSS. In two patients with dynamic MR, in whom the conventional Gd-enhanced MR showed false negative results, the lesions were detected as low signal intensity mass and correctly lateralized. Considering the results of both MR and IPSS, the sensitivity increased up to 94.1%(17/18). CONCLUSION: Considering the invasiveness of IPSS, Gd-enhanced MR, preferably dynamic, seems to be an imaging modality of choice in Cushing's disease. Combined use of IPSS in selected patients further increases the accuracy of diagnosis and lateralization.
ACTH-Secreting Pituitary Adenoma ; Diagnosis ; Female ; Humans ; Pituitary Gland ; Retrospective Studies

In situ follicular lymphoma is a newly defined entity among the lymphoid neoplasms and is defined as architecturally normal-appearing lymph nodes and other lymphoid tissues that have one or more follicles that demonstrate bcl-2 overexpressing centrocytes and centroblasts, with or without a monomorphic cytologic appearance suggestive of follicular lymphoma. Here we present a case of in situ follicular lymphoma diagnosed during the follow-up after a complete response to the treatment of lymphocyte-rich classical Hodgkin's lymphoma. In our case, because only a few germinal centers contained bcl-2 overexpressing cells, we missed the diagnosis of in situ follicular lymphoma in the initial histological examination. We could establish the diagnosis only after performing bcl-2 immunostaining in the sequential biopsy. Therefore, we recommend that careful histological examination along with bcl-2 immunostaining is needed in patients with suspicious clinical findings.
Biopsy ; Follow-Up Studies ; Germinal Center ; Hodgkin Disease ; Humans ; Lymph Nodes ; Lymphoid Tissue ; Lymphoma ; Lymphoma, Follicular ; Precancerous Conditions

In 1992, Brugada described clinical features of patients with aborted sudden cardiac death who showed no demonstrable heart disease and a peculiar ECG pattern consisting of right bundle branch block and ST-segment elevation in right precordial leads. Recently, We experienced two cases with aborted sudden cardiac death and similar ECG pattern. Physical examination, routine laboratory tests including serum electrolytes, echocardiography, myocardial thallium SPECT, MRI and MIBG scans were within normal limit. Arrhythmias were not induced in treadmill exercise test, and signal averaged ECGs revealed positive late potentials. Coronary angiography showed normal coronary artery with no evidence of induced vasospasm. Polymorphic ventricular tachycardia and ventricular fibrillation were induced by ventricular stimulation. Intravenous administration of flecainide, procainamide augmented ST segment elevation in one patient, and isoproterenol reduced ST segment elevation in the other patient. For prevention of sudden death, ICDs were implanted in the two patients. Ventricular fibrillations occurred in one patient 12 and 13 months after the implantation and were successfully terminated by ICD.
3-Iodobenzylguanidine ; Administration, Intravenous ; Arrhythmias, Cardiac ; Bundle-Branch Block* ; Coronary Angiography ; Coronary Vessels ; Death, Sudden ; Death, Sudden, Cardiac* ; Echocardiography ; Electrocardiography ; Electrolytes ; Exercise Test ; Flecainide ; Heart Diseases ; Humans ; Isoproterenol ; Magnetic Resonance Imaging ; Physical Examination ; Procainamide ; Tachycardia, Ventricular ; Thallium ; Tomography, Emission-Computed, Single-Photon ; Ventricular Fibrillation

A 70-year-old woman developed sick sinus syndrome associated with thyrotoxicosis. Initial T3 was above 800ng/dl and TSH was below 0.05IU/ml. But sinus node dysfunction was resolved upon achieving a euthyroid state. This clinical course suggest that transient reversible sinus node dysfunction could be developed due to thyrotoxicosis.
Aged ; Female ; Humans ; Sick Sinus Syndrome* ; Thyrotoxicosis*

No abstract available.
Baculoviridae* ; Herpesvirus 1, Suid* ; Pseudorabies*