Leiomyoma of the Appendix: A Case Report

Leiomyomas of the appendix are rare and most are encountered incidentally during exploration of the abdomen for some other disease, during postmortem examination, or in the course of routine pathologic examinations of surgical specimens. We report here the findings of ultrasonography, CT and surgery of a case of leiomyoma that arose from the appendix; this lesion was pathologically confirmed.

Treatment of Patellar Fracture by percutaneous tension band wiring and open tension band wiring techniques

PURPOSE: By comparing the results of the percutaneous tension band wiring with those of the open tension band wiring for the treatment of patellar fracture, we tried to sh6w the practical use of the percutaneous tension band wiring. MATERIALS AND METHODS: We analyzed radiological and clinical results of 10 cases of isolated patellar fractures treated with the percutaneous tension band wiring and 10 cases of isolated patellar fractures treated with the open tensian band wiring. RESULTS: There were no significant differences between the percutaneous tension band wiring and open tension band wiring on operation time, knee score and function score, but the percutaneous tension band wiring showed more rapid on bony union. Two cases treated with the open tension band wiring showed limitation of motion of the knee joint, and one case treated with the open tension band wiring showed patellar elongation. CONCLUSION: Comparing with the open tension band wiring, the percutaneous tension band wiring can be done without wide skin incision and can give patients more satisfaction. We concluded that the percu-taneus tension band wiring is a good method and can replace the conventional open tension band wiring.

Periprosthetic Fractures After Total Knee Arthroplasty

PURPOSE: To analyse of the result of the treatment of periprosthetic fractures after total knee arthroplasty. MATERIALS AND METHODS: We reviewed 1J knees of 11 patients with supracondylar periprosthetic fractures who underwent total knee arthroplasty between July 1989 and October 1998. There are 1 man and 10 women. The average follow-up period was 24 months(Range, 6 - 61). The patients were grouped according to the treatment mothods; Group I is the patients who were treated by cast or cast brace. Group II is the patients who were treated by skeletal traction followed by cast or cast brace. Group III is the patients who were treated by retrograde intramedullary nails, We analysed time required for union, tibiofemoral angle after union, Range of motion and HSS score of each group. RESULTS: Time required for union is shorter in Group I and III than Group II. Tibiofemoral angle after union is not significant change in all Groups postoperatively. ROM was not decreased in Group III but there was significant changes. HSS score was decreased in Group II, 85 preoperatively and 64 postopera-tively. CONCLUSION: Cast or Cast brace only can be recommended for knees in which the initial alignment and stability of fracture were in acceptab1e range, In knees with malaligned and unstable periprosthetic fracture, retrograde IM nails can be recommended for better clinical and radiological results.

Correlation of Posterior Echo Patterns and Histopathologic Features in Invasive Ductal Carcinoma of Breast / 영남의대학술지

No abstract available.

Development of Hospital DrWin PACS Integrated with HIS / 대한의료정보학회지

The development of Information technology affects the medical field a lot. Even though the PACS is developed for filmless hospital, the initial cost is very high and the investment effect is not clear yet. The purpose of this paper is to develop a costeffective hospital PACS which can be integrated with existing hospital information systems. Even though the PACS is developed for small sized hospitals, it has all the important functions of the large-scaled PACS system can provide such as image processing, clinic and patient information management, image file transfer through communication, and report generator functions for various types of hard output. Also, the developed system is designed for future expansion and compatibility with other hospital information systems.

Patterns of Vascular Invasion of Intrahepatic Peripheral Cholangiocarcinoma Examined with Angiography and Angiographic CT

PURPOSE: To evaluate the radiological patterns of vascular invasion in peripheral cholangiocarcinomas. MATERIALS AND METHODS: Hepatic arteriography and portography in 20 cases with cholangiocarcinoma including 12 cases with anglographic CT were retrospectively analized. RESULTS: The arteriography showed no arterioportal shunt, hypertrophy of tumor vessel, or tumor staining extending to central portion of the mass in all cases. However, doughnut shaped peripheral tumor staining was seen until late hepatogram phase in 12 cases and compensatory hyperperfusion around the mass was seen in six cases(eight cases if include arterial CT). Encasement of tumor vessel was seen in 12 cases, and hypertrophy of feeding vessel in nine cases. On portogrphy, the filling defect on segmental portal branch could be demonstrated only in 11 cases. Shape of the portal defect was tapered narrowing in six cases, abrupt narrowing in two cases but intraluminal nodular filling defect was not seen. Remainning three cases were difficult to define the shape. On seven cases of CT during arterial portography, three cases showed mass shaped defect and four showed segmental defect but three of them could demonstrate the partially preserved portal flow in defective portal area. CONCLUSION: Hepatic arteriography in peripheral cholagiocarcinoma showed no evidence of hypertrophy of tumor vessels and tumor stain extending to central portion but peripheral staining on late hepatogram phase and compensatory hyperperfusion could be seen. Portal vein was more commonly involved through perivascular connective tissue invasion rather than by direct extension into the portal lumen.

Patterns of Vascular Invasion of Intrahepatic Peripheral Cholangiocarcinoma Examined with Angiography and Angiographic CT

PURPOSE: To evaluate the radiological patterns of vascular invasion in peripheral cholangiocarcinomas. MATERIALS AND METHODS: Hepatic arteriography and portography in 20 cases with cholangiocarcinoma including 12 cases with anglographic CT were retrospectively analized. RESULTS: The arteriography showed no arterioportal shunt, hypertrophy of tumor vessel, or tumor staining extending to central portion of the mass in all cases. However, doughnut shaped peripheral tumor staining was seen until late hepatogram phase in 12 cases and compensatory hyperperfusion around the mass was seen in six cases(eight cases if include arterial CT). Encasement of tumor vessel was seen in 12 cases, and hypertrophy of feeding vessel in nine cases. On portogrphy, the filling defect on segmental portal branch could be demonstrated only in 11 cases. Shape of the portal defect was tapered narrowing in six cases, abrupt narrowing in two cases but intraluminal nodular filling defect was not seen. Remainning three cases were difficult to define the shape. On seven cases of CT during arterial portography, three cases showed mass shaped defect and four showed segmental defect but three of them could demonstrate the partially preserved portal flow in defective portal area. CONCLUSION: Hepatic arteriography in peripheral cholagiocarcinoma showed no evidence of hypertrophy of tumor vessels and tumor stain extending to central portion but peripheral staining on late hepatogram phase and compensatory hyperperfusion could be seen. Portal vein was more commonly involved through perivascular connective tissue invasion rather than by direct extension into the portal lumen.

CT Findings of Bronchogenic Cyst / 영남의대학술지

We studied to evaluate CT characteristics of bronchogenic cysts. We retrospectively evaluated CT of 11 patients with pathologically proved bronchogenic cyst. Precontrast and postcontrast CT scan was performed in all. We analyzed CT with viewpoints of location, size, attenuation on pre- and postcontrast scan, and calcification. Three of 11 bronchogenic cysts were intrapulmonary in location and eight were located in the mediastinum. Two of 3 intrapulmonary bronchogenic cysts were located in the right lower lobe, and the remaining one was left lower lobe. Intrapulmonary bronchogenic cysts ranged from 6cm to 12cm in diameter (average, 9.7 cm). On Cr, intrapulmonary bronchogenic cysts appeared as thin-wall air cyst, homogenous water attenuation and soft tissue attenuation with air bubble respectively. Mediastinal bronchogenic cysts were located in posterior mediastinum(n=5), superior mediastinum(n=2), middle mediastinum(n=1) respectively. These cysts ranged in size from 3cm to 8cm in diameter (average, 5.0 cm). On CT, five showed homogenous water attenuation, two soft tissue attenuation similar to that of muscle, one air-fluid level. Calcification or contrast enhancement was not detected in any cases. On operative findings, all of intrapulmonary bronchogenic cysts contained dirty pus-like material and all of mediastinal bronchogenic cysts contained whitish or yellowish mucus material. Bronchogenic cysts showed homogenous water density in many cases, homogenous soft tissue density, air-fluid level and air-filled cyst. The constellation of CT findings may be helpful in the diagnosis and

Vascular Nature of Liver Abscess Examined with Computed Tomography: Separated Identification of the Four Layers and Difference According to the Various Factors of Abscess

PURPOSE: To identify the four layers based on intranodular vascular nature visible in multiphase incremental bolus dynamic CT and to determine any differential points according to various factors of liver abscess with this vascular nature or not. MATERIALS AND METHODS: We categonized 29 cases of confirmed liver abscess into three different groups according to presence of four layers visible in early phase(arterial phase) of CT. Three groups were compared in regard to the results of antiamebic antibody test and bacteriologic study and presense of cholangitic abscess and internal septation. RESULTS: We could separate four layers, innermost hypodense central cavitary lesion, hyperdense granular tissue, hypodense abscess wall and outermost hyperdense compensatory hypervascular zone in 18 cases(62%), only two layers, cavity and wall in six cases(21%), and characteristically we could find three layers without innermost cavitary lesion in five cases(17%). But we couldn't find significant correlations between various clinical factors of liver abscess and our vascular groups. CONCLUSION: Our method of CT could represent four layers based on vascularity in 62% of cases. And also could find the unusual inflammatory mass containing three layer which must be differentiated from other malignant solid mass. But we couldn't find differential point between various clinical factor of liver abscess and imaging diagnosis. We think that with the improvement of hardware such as spiral CT, identification of four layers will be earier and will be very helpful in early detection and proper treatment planning of liver abscess.