No abstract available.
Adult* ; Humans ; Ophthalmic Artery*

We report a case of a tick bite by Ixodes nipponensis found on the neck of a 75-year-old female. The tick was thought to be in the lesion for 10 days. Till now 31 cases of tick bites were reported in Korea including the present case. The review of the Korean cases revealed that the ratio of female/male was 1.3 : 1, its age distribution was from 1st to 8th decade, sites of the invasion were trunk, head and neck, extremities, and anogenital area in order of frequency. Its prevalent season was spring and summer and the most common species(17/31) was Ixodes nipponensis.
Age Distribution ; Aged ; Extremities ; Female ; Head ; Humans ; Ixodes ; Korea ; Neck ; Seasons ; Tick Bites* ; Ticks*

BACKGROUND: Hematopoietic stem cells (HSC) remain one of the most promising target cells for gene therapeutic approaches, but is currently limited by a number of issues, including the low gene transfer efficiency. METHODS: We evaluated the effect of recombinant fibronectin fragment (retronectin) and cytokines during retroviral transduction of CD34+ cells and analyzed the characteristics of transduced cells. To rapidly characterize and isolate transduced cells, we used a retroviral vector coding for the truncated form of the low-affinity nerve growth factor receptor (delta LNGFR). RESULTS: The total number of CD34+ cells (1.5~6.3-fold) and the amount of cycling (S+G2/M) cell fractions (2~6-fold) were increased after cytokine prestimulation, especially using thrombopoietin (TPO)-based cytokines. The immunophenotype of CD34+ cells showed no significant differences according to the cytokines. However, CD34+AC133+ cells were more effectively maintained in the presence of TPO. The transduction efficiency of CD34+ cells was significantly increased in the presence of retronectin (6.7+/-2.3% vs 23.1+/-4.4%). Immunomagnetic selection of the transduced cells allowed us to enrich these effectively (6.7+/-2.3% --> 86.3+/-6.5%). Compared with control, delta LNGFR transduction did not influence on the immunophenotype and cloning efficiency of CD34+ cells. Among the delta LNGFR+/-derived colonies, 85.0% were shown to contain an integrated delta LNGFR gene. CONCLUSION: These data show that retronectin and TPO-based cytokines can be used to facilitate retroviral transduction of CD34+ cells. Also, delta LNGFR transduced cells could be rapidly characterized by FACS analysis and effectively enriched by immunomagnetic selection method. Further improvement of transduction conditions for stimulation of HSC proliferation without differentiation and development of new vectors that obviate the requirement for cell division are likely to enhance transduction of primitive HSC.
Cell Division ; Clinical Coding ; Clone Cells ; Cloning, Organism ; Cytokines* ; Fibronectins* ; Hematopoietic Stem Cells ; Nerve Growth Factor ; Thrombopoietin ; Zidovudine*

Upper gastrointestinal bleeding is one of the most common complications in patients with chronic renal failure. Common causes are peptic ulcer, gastritis, duodenitis, esophagitis, Mallory-Weiss tear, and angiodysplasia. However, gastric polyp is a rare cause of upper gastrointestinal bleeding. We diagnosed a bleeding hyperplastic polyp in chronic renal failure patient with melena. He had a bleeding polyp with a Y-shaped stalk. This polyp was treated effectively by endoscopic snare polypectomy.
Angiodysplasia ; Duodenitis ; Esophagitis ; Gastritis ; Hemorrhage* ; Humans ; Kidney Failure, Chronic* ; Mallory-Weiss Syndrome ; Melena ; Peptic Ulcer ; Polyps* ; SNARE Proteins

Upper gastrointestinal bleeding is one of the most common complications in patients with chronic renal failure. Common causes are peptic ulcer, gastritis, duodenitis, esophagitis, Mallory-Weiss tear, and angiodysplasia. However, gastric polyp is a rare cause of upper gastrointestinal bleeding. We diagnosed a bleeding hyperplastic polyp in chronic renal failure patient with melena. He had a bleeding polyp with a Y-shaped stalk. This polyp was treated effectively by endoscopic snare polypectomy.
Angiodysplasia ; Duodenitis ; Esophagitis ; Gastritis ; Hemorrhage* ; Humans ; Kidney Failure, Chronic* ; Mallory-Weiss Syndrome ; Melena ; Peptic Ulcer ; Polyps* ; SNARE Proteins

PURPOSE: To evaluate useful findings and diagnostic value of TI-201 thyroid scan in differentiating benign from malignant nodules. MATERIAL AND METHOD: We studied 77 cold thyroid nodules proven histologically(27 malignat and 50 benign). Early (5--15rain) and delayed images(3--5hours) were obtained after intravenous injection of thallium 201. In these nodules, we retrospectively analyzed the degree of TI-201 uptake in early and delayed images, histopathologic type, size, and presence or absence of cystic change in the sonograms of 22 malignant nodules. RESULTS: Useful finding for diagnosis of malignant nodules was strong uptake of TI-201 in early and delayed images(specificity:98%, sensitivity:63%, positive predictive value:94.4%). Useful finding for benign nodules was no uptake of TI-201 in delayed image(specificity :88.9%, sensitivity :68%, positive predictive value :91.9%). The accuracy of TI-201 thyroid scan in differentiating benign from malignant nodules was 66.2%. The nodules with strong TI-201 uptake in early image and low TI-201 uptake in delayed image were malignant in 29.4%. Cystic changes were found in 40% of malignant nodules with atypical TI-201 uptake. TI-201 thyroid scan showed high specificity in follicutar neoplasm and adenomatous goiter in which differentiation of benignancy and malignancy is difficult with only cytologic examination. CONCLUSION: We consider that TI-201 thyroid scan is valuable in differentiating benign from malignant nodules and when combined with fine needle aspiration and ultrasound examination, it will enable more accurate differential diagnosis between benign and malignant thyroid nodules.
Biopsy, Fine-Needle ; Diagnosis ; Diagnosis, Differential* ; Goiter ; Injections, Intravenous ; Retrospective Studies ; Sensitivity and Specificity ; Thallium* ; Thyroid Gland* ; Thyroid Nodule ; Ultrasonography

Merkel cell carcinoma is a rapidly growing malignant neuroendocrine tumor with a high rate of recurrence and metastasis for which wide excision is recommended. About 10 cases of spontaneous regression have been reported in the world. We report a case of Merkel cell carcinoma which showed spontaneous regression. The patient was a 68-year-old woman with a two-month history of a rapidly enlarging dusky red tumor on her right cheek. Microscopically, the tumor cells were uniform with round to oval shaped nucleus and scanty cytoplasm, and showed trabecular arrangement. Ultrastructually, dense core neurosecretory granules 100 to 200nm in diameter were found in the cytoplasm of tumor cells. As far as we know, this is the first case of the spontaneous regression of the tumor in the country.
Aged ; Carcinoma, Merkel Cell* ; Cheek ; Cytoplasm ; Female ; Humans ; Neoplasm Metastasis ; Neuroendocrine Tumors ; Recurrence

BACKGROUND: It has been shown that subjects with exceptional longevity and their offsprings have a lower incidence and delayed onset of age-related diseases. Cardiovascular protective effect through over-presentation of Apo E2 with lower LDL cholesterol level, high HDL cholesterol, and larger size of HDL and LDL particle with cholesteryl ester transfer protein(CETP) genetic variation were suggested as a mechanism of less cardiovascular disease in exceptional longevity. Objective of this study is to examine what risk factors of cardiovascular diseases were related with exceptional longevity in Korea. METHODS: One hundred seventeen centenarians, 179 nonagenarians, 61 octogenarian regional controls were visited and joined after informed written consent was obtained. Age was first identified by National Residence Registry with help of regional government and verified by visiting researchers with birth year animal, age of first child and neighbor's connection memory. Detailed interview with questionnaires about health status and life style, physical examination, physical and cognitive function, and blood tests were performed. Data about risk factors of cardiovascular disease was analyzed and compared exceptional longevity group with regional control group and 455 octogenarian control data from 2001 National Health and Nutrition Examination. RESULTS: Hypertension and diabetes history, hypercholesterolemia and hypertriglyceridemia, obesity and abdominal obesity, and physical inactivity ratio of longevity groups were significantly less than control group. Level of homocysteine, and C-reactive protein and low serum HDL cholesterol ratio were not much different between longevity and control group. CONCLUSION: Fewer risk factors and delayed onset of cardiovascular disease were observed in Korean exceptional longevity group. Future research about genetic protective effect of cardiovascular disease in longevity is required.
Aged, 80 and over ; Animals ; Apolipoprotein E2 ; C-Reactive Protein ; Cardiovascular Diseases* ; Child ; Cholesterol, HDL ; Cholesterol, LDL ; Genetic Variation ; Hematologic Tests ; Homocysteine ; Humans ; Hypercholesterolemia ; Hypertension ; Hypertriglyceridemia ; Incidence ; Korea ; Life Style ; Longevity* ; Memory ; Obesity ; Obesity, Abdominal ; Parturition ; Physical Examination ; Surveys and Questionnaires ; Risk Factors*

Nevus sebaceus is a congenital cutaneous hamartoma which has a potential to develop both benign and malignant neoplasm in late life. The most common benign tumor developed within the nevus is syringocystadenoma papilliferum and the most common malignant tumor basal cell epithelioma. Although two different tumors often develop simultaneously on the lesion, it is rare to see more than two different tumors developing on the lesion of nevus sebaceus. In Korean literatures only three such cases were reported. We report an additional case of nevus sebaceus developing three different tumors, syringocystadenoma papilliferum, sebaceous epithelioma, and basal cell carcinoma, in a 67-year-old female patient.
Aged ; Carcinoma* ; Carcinoma, Basal Cell* ; Female ; Hamartoma ; Humans ; Nevus*

The numb chin syndrome (NCS) is characterized by chin or lower lip numbness restricted to the distribution of the mental nerve (the distal trigeminal nerve). The authors report a patient whose initial symptom of tumor recurrence was unilateral numbness of the chin. A 65-year-old male was admitted because of paresthesia around the left chin and left lower lip. Neurologic examination revealed hypesthesia on the left side of chin, lower lip and buccal mucous mem-brane. Bone scan (Tc-99m MDP) showed focal hot uptakes on the left mandible and left first rib. Brain CT with bone window setting showed a focal osteolytic lesion in the bone marrow of the left mandibular canal without destruction of bone cortex. Both coronal T1 weighted image and axial T2 weighted image showed focal low signal intensities on the left ramus. The pathophysiologic mechanism could be understood by identification of the pathologic focus.
Aged ; Bone Marrow ; Brain ; Chin ; Hodgkin Disease* ; Humans ; Hypesthesia ; Lip ; Male ; Mandible ; Neurologic Examination ; Paresthesia ; Recurrence ; Ribs