BACKGROUND: Radiofrequency catheter ablation was introduced the curative method of supraventricular tachycardia in patients with accessory pathways. The success of catheter ablation depends on the accurate localization of accessory pathway and the destruction of accessory pathways. METHOD: We analyzed the local electrograms in 35 patients to be underwent the successful catheter ablation and measured the catheter stability, A/V ratio, AV interval, Accessory pathway potential, and the interval from the onset of RF energy to loss of accessory pathway from local electrograms at the successful ablation sites. RESULTS: The ratio of A wave and V wave range from 0.06 to 6.33 and the mean of A/V ratio is 0.62. The shortest AoVo interval is 20 msec and the longest AoVo interval is 120 msec and the mean of AoVo interval is 58.23 msec. The shortest ApVp interval is 20 msec and the longest ApVp interval is 100 msec and the mean of this interval is 51.88 msec. The incidence of accessory pathway potential among 35 successful ablation sites in 25%. The mean of time from RF energy to loss of accessory pathway is 4.48 sec. CONCLUSION: We concluded that the finding of local electrogram during catheter ablation is very important for shortening of procedure time and the successful procedure.
Catheter Ablation* ; Catheters ; Electrophysiologic Techniques, Cardiac* ; Humans ; Incidence ; Tachycardia, Supraventricular

No abstract available.
Cell Line* ; Colorectal Neoplasms* ; Eflornithine* ; Humans*

Authors found a case with a slight trauma in which two eye lashes penetrated into the anterior chamber. This 25 years old male patient came to our clinic 2 weeks after trauma on right eye and eyelid, complaining of photophobia, foreign body sensation and ocular pain which were persisted for two weeks. On slit-lamp examination, two eye-lashes on iris surface were found in the anterior chamber of his right eye and a dot like corneal superficial opacity was also found on 6 o'clock meridian near the limbus, but that is questionable whether it is penetrating wound or not. No other foreign body was noticed in the same chamber. The eye lashes were removed surgically and the one of them was carried out by iridectomy. The literatures were briefly reviewed for the mechanism of the penetration of the cilia was very mterestmg.
Adult ; Anterior Chamber* ; Cilia ; Eyelids ; Foreign Bodies ; Humans ; Iridectomy ; Iris ; Male ; Photophobia ; Sensation ; Wounds, Penetrating

Authors compared early phase scan of the IV bolus CT (two phase incremental bolus dynamic CT) with late enhanecd scan similar to the conventional contrast enhanced CT for evaluation of the advantages of the IV bolus CT with two viewpoints of the pancreatic or peripancreatic mass and peripancreatic lymphadenopathy in 68 patients-28 cases of the pancreatic cancer, 6 cases of the pancreatitis and 34 cases of the pancreatic or peripancreatic metastasis. On the diagnosis of the pancreatic or peripancreatic mass, IV bolus CT could show the lesion(s) more easily in 41% (Grade II; 13/31) and much more easily in 34% (Grade III; 10/31) when compared with conventional contrast CT scan. The diagnosis of the peripancreatic lymph node involvement was also easy in 51%(Grade II; 20/39) and much easier in 37% (Grade III; 14/39). We thought that these differences were originated from the increase of the contrast between the lesion and normal portion because the early enhanced scans reflected the active blood flow change more exactly. Therefore IV bolus CT had advantages in comparison with the conventional drip infusion contrast CT in the diagnosis of the presence and pathologic extension of the pancreatic and peripancreatic lesion.
Diagnosis ; Infusions, Intravenous ; Lymph Nodes ; Lymphatic Diseases ; Neoplasm Metastasis ; Pancreatic Neoplasms ; Pancreatitis ; Tomography, X-Ray Computed

Authors compared early phase scan of the IV bolus CT (two phase incremental bolus dynamic CT) with late enhanecd scan similar to the conventional contrast enhanced CT for evaluation of the advantages of the IV bolus CT with two viewpoints of the pancreatic or peripancreatic mass and peripancreatic lymphadenopathy in 68 patients-28 cases of the pancreatic cancer, 6 cases of the pancreatitis and 34 cases of the pancreatic or peripancreatic metastasis. On the diagnosis of the pancreatic or peripancreatic mass, IV bolus CT could show the lesion(s) more easily in 41% (Grade II; 13/31) and much more easily in 34% (Grade III; 10/31) when compared with conventional contrast CT scan. The diagnosis of the peripancreatic lymph node involvement was also easy in 51%(Grade II; 20/39) and much easier in 37% (Grade III; 14/39). We thought that these differences were originated from the increase of the contrast between the lesion and normal portion because the early enhanced scans reflected the active blood flow change more exactly. Therefore IV bolus CT had advantages in comparison with the conventional drip infusion contrast CT in the diagnosis of the presence and pathologic extension of the pancreatic and peripancreatic lesion.
Diagnosis ; Infusions, Intravenous ; Lymph Nodes ; Lymphatic Diseases ; Neoplasm Metastasis ; Pancreatic Neoplasms ; Pancreatitis ; Tomography, X-Ray Computed

We performed IV bolus CT scan in 40 patients with final diagnosis of various hepatic masses in order to evaluate hemodynamic changes and differentiating characters of the lesions. Preenhanced, early and late phase post enhanced, and delayed CT scans were obtained with rapid IV bolus injection of contrast materials and table sliding method for pertinent scans. In hepatomas, early enhanced CT scan directly showed hypervascular change and active viable portion of the mass and late phase CT scan showed capsular enhancement. In addition, extracapsular invasion and post-embolization recurrence were more easily visualized. In hemangiomas, early and late enhancing types could be categorized according to the time of maximal enhancement. In metastatic liver malignancies and cholangiocarcinomas, specific findings were seen in early phase and delayed CT scans and not in conventional CT scan. In conclusion, IV bolus CT scan is a very useful CT method in demonstrating the characteristic hemodynamic patterns and in differential diagnosis of the hepatic masses.
Carcinoma, Hepatocellular ; Cholangiocarcinoma ; Contrast Media ; Diagnosis ; Diagnosis, Differential ; Hemangioma ; Hemodynamics ; Humans ; Liver ; Methods ; Recurrence ; Tomography, X-Ray Computed*

Isolated heaptic tuberculous granuloma with no coexistent tuberculosis elsewhere in the body is extremely rare. We report a case of pathologically proven tuberculous granuloma in the liver followed with both IV bolus and portal CT scans. The lesion on preenhanced CT scan showed undefinable isodensity. After IV bolus injection, it showed poor enhancement with central low-density and surrounding hyperdenity due to compensatory hypervascularity of the left lobe of liver in early phase. It showed peripheral rim enhancement in late phase and in delayed phase showed relatively homogeneous but slightly decreased contract enhancement. On portal CT scan, it showed a hypodense portal defect similar to other hepatic mass lesions. During follow-up studies, it was a slowly growing mass which was more easily detectable by prtal CT scans than bolus CT scans.
Follow-Up Studies ; Granuloma* ; Liver ; Tomography, X-Ray Computed ; Tuberculosis

The bone is the dynamic living tissue which is always maintained bone mineral content by bone resorption and formation. It has been well known that the bone mineral content is decreased very slowly with aging. It is very difficult to diagnose the osteopenia because it is almost subclinical. Another important problem in the osteopenia is the fracture occurring spontaneously. The quantitative method of bone mineral mass provide an information to diagnose the osteopenia and predict the risk of spontaneous fracture. Various methods have been used to access the degree of bone atrophy but have not been routinely available for clinical application in the hospital. The microdensitometric method is a noninvasive, easy, accurate, and objective one to monitor the degree of changes in the skeletal mass quantitatively. So, we measured the 7 indices at the middle site of the 2nd metacarpal bone with a microdensitometer and computer on an X-ray film of the hands and studied the correlations between the age and indices of those under 30 and over 30 yrs old in healthy and fracture groups. The results were obtained as follows : 1. There was a significant high correlation between age and indices in healthy and fracture groups. 2. The measurement of age by microdensitometric method was highly correlated with the chronological age. 3. Comparing both groups, There was a significant correlation of D (P<0.001), MCI(P<0.01), and d (P<0.01) over 30 yrs in male and GSmin (P<0.001) and ΣGS/D (P<0.01) over 30 yrs in female. 4. In fracture group, 1) The index of bone width(D) was slightly larger than in the healthy group. 2) The metacarpal index(MCI) was lower than in the healthy group. 3) The index of medulla width(d) was wider than in the healthy group. 4) The density index of cortex(GSmax) was smaller than in the healthy group. 5) The density index of cortex and medulla(GSmin) was smaller than in the healthy group. 6) There was no considerable difference in ΣGS/D between healthy and fracture groups. 7) The densitometric pattern was more aggrevated than in the healthy group.
Aging ; Atrophy ; Bone Density ; Bone Diseases, Metabolic ; Bone Resorption ; Female ; Fractures, Spontaneous ; Hand ; Humans ; Male ; Methods ; Miners ; Radiography ; X-Ray Film

OBJECTIVE: The aims of this study were to analyze the natural history of patients with pseudomyxoma peritonei originated from mucinous ovarian tumor, evaluate clinical and pathologic variables, and review our experience with available therapeutic modalities. METHODS: Six patients were treated for pseudomyxoma peritonei originating from mucinous ovarian tumor at Severance Hospital between 1990 and 1998. The data were collected retrospectively and all charts were reviewed RESULTS: The mean age at diagnosis was 51 years, and most common symptoms were abdominal distension. Pseudomyxoma peritonei was found in association with five mucinous ovarian tumors of borderline malignancy, and one ovarian mucinous adenoma. All patients underwent surgical staging and cytoreduction, three patients received postoperative adjuvant chemotherapy and, of these, two developed recurrence. With respect to survival, all patients were alive, four were alive and free of disease, two were alive with disease at the end point of study. CONCLUSION: Pseudomyxoma peritonei is commonly associated with borderline mucinous ovarian tumors, and is a frequently relapsing and protracted disease. But aggressive and repeated debulking surgery is recommended for long survival.
Adenoma ; Chemotherapy, Adjuvant ; Diagnosis ; Humans ; Mucins* ; Natural History ; Pseudomyxoma Peritonei* ; Recurrence ; Retrospective Studies

No abstract available.