PURPOSE: To find the CT and US findings of multilocular cystic renal cell carcinoma. MATERIAL AND METHODS: We retrospectively analysed CT and US findings of five cases of the pathologically proven multilocular cystic renal cell carcinoma. We analysed CT and US with view points of tumor margin, growth pattern, renal contour change, echogenicity, attenuation on pre- and postcontrast scan, thickness and number of septum, and perirenal change. RESULTS: The CT findings of the multilocular cystic renal cell carcinoma were large well defined round encapsulated multiple fluid filled cystic mass with exophytic growing pattern. The capsule and septum were relatively well enhanced with contrast medium. The cystic space and septurn were variable in size and shape. US revealed large multiple fluid filled cystic mass separated by echogenic septum. CONCLUSION: The above CT and US findings of multilocular cystic renal cell carcinoma may be helpful in the diagnosis.
Carcinoma, Renal Cell* ; Diagnosis ; Retrospective Studies

PURPOSE: We reported the CT and MR findings of 2 cases with Sturge-Weber syndrome which were not accompanied by facial nevi. MATERIALS AND METHODS: They were examined with both CT and MR in one case and with MR only in the other case. RESULTS: CT was better than MR in the demonstration of the characteristic cortical calcification. MR was superior to CT in the depiction of the abnormalities of the surrounding parenchyma and the intense enhancement of pial angiomatosis with Gd-DTPA enhancement. CONCLUSION: Gd-DTPA enhanced MR imaging could be useful in the demonstration of the presence and extent of pial angiomatosis in patients with suspected Sturge-Weber syndrome.
Angiomatosis ; Gadolinium DTPA ; Humans ; Magnetic Resonance Imaging ; Nevus* ; Sturge-Weber Syndrome*

No abstract available.
Synovitis, Pigmented Villonodular*

We decribe the CT findings in a case of mediastinal hemangioma. Precontrast enhanced CT demonstrated a homogeneous soft tissue mass with weveral nodular calcifications indicating phleboliths. Contrast enhanced CT revealed some areas of enhancement similar to that of adjacent vascular structures. Hemangiomas of the mediastinum, although rare, should be included in the differential diagnosis of enhancing mediastinal masses.
Diagnosis, Differential ; Hemangioma* ; Mediastinum

The purpose of this volunteer study was to investigate whether pretreatment with UDCA before the administration of 99mTc DISIDA affects the biliary excretion of the DISIDA, and whether it can shorten the total imaging time. Ten young, healthy volunteers (eight males, two females, mean age: 26.3 +/- 2.1 years) participated in the study. Hepatobiliary scintigraphies were performed twice per volunteer within three days, for the control and the UDCA-pretreated studies. In the control study, the gallbladder (GB) was observed first in four cases and the intestine was observed first in another four cases; in contrast, in the UDCA challenge study, the GB was observed first in eight cases. The quantitative results for the factors related to the GB differed significantly between the control and challenge studies. When the subjects were pretreated with UDCA, the time duration until visualization of the GB was shortened, and the maximum activity of the GB became more intense. In conclusion, UDCA pretreatment before hepatobiliary scintigraphy can shorten the total imaging time for evaluating functional obstructions of the cystic duct and increase the specificity of the process.
Adult ; Biliary Tract/*radionuclide imaging ; Female ; Humans ; Liver/*radionuclide imaging ; Male ; Radionuclide Imaging/*methods ; Radiopharmaceuticals/*pharmacokinetics ; Technetium Tc 99m Disofenin/*pharmacokinetics ; Ursodeoxycholic Acid/*pharmacology

An antrochoanal polyp is a solitary polypoid mass that arises from the maxillary sinus, and protrudes through the natural ostium into the middle meatus, and reaches the choana, The polyp does not differ histologically from an ordinary nasal polyp, which is composed of edematous, hyperplastic submucosal connective tissue stroma, and is relatively hypocellular, In this sequence of events. Its computed tomographic(CT)findings are characteristic. We retrospectively analyzed CT studies of nine cases, all of which showed similar CT findings; a solitary, homogeneous, hypodense mass without bony destruction that extends from the maxillary sinus through the widened ostium into the choana.
Connective Tissue ; Maxillary Sinus ; Nasal Polyps ; Polyps* ; Retrospective Studies

Real-time ultrasonogram was performed in 31 Pt. with CHPS, who was admitted at the pediatric department of Wonkwang University hospital from January 1991 to June 1993. Those who had positive results of pyloric volume for diagnosis of CHPS and were confirmed by surgery. The results were at follows: 1) The average ultrasonographic measurements of pyloric muscle thickness, pyloric diameter, pyloric length were 4.9+/-1.09mm, 14.42+/-2.69mm, 19.17+/-2.37mm, and pyloric volume was 3.26+/-1.39ml. 2) The diagnostic reliabilities with the ultrasonographic measurements of muscle thickness (>4mm), pyloric diameter (>12mm) and pyloric length (>15mm) by Stunden's criteria in 31 cases were compared, which were not significant difference among them. 3) In ultrasonographic measurements of 31 cases for diagnosis of CHPS, positive results with 3 parameters were 80.6% and with 2 parameters and double tract signs were 87.1%. So. we conclude pyloric volume greater than 1.4ml was the most reliable parameter, which was satisfied 100% with diagnosis of CHPS.
Diagnosis* ; Pyloric Stenosis, Hypertrophic* ; Ultrasonography

No abstract available.
Blood Cells* ; Radionuclide Imaging*

Radioiodine ablation therapy has been considered to be a standard treatment for patient with differentiated thyroid cancer after total thyroidectomy. Patients may need to be hospitalized to reduce radiation exposure of other people and relatives from radioactive patients receiving radioiodine therapy. Medical staffs, nursing staffs and technologists sometimes hesitate to contact patients in radioiodine therapy ward. The purpose of this paper is to introduce radiation dosimetry, estimate radiation dose from patients and emphasize the safety of radiation exposure from patients treated with high dose radioiodine in therapy ward. The major component of radiation dose from patient is external exposure. However external radiation dose from these patients treated with typical therapeutic dose of 4 to 8 GBq have a very low risk of cancer induction compared with other various risks occurring in daily life. The typical annual radiation dose without shielding received by patient is estimated to be 5 to 10 mSv, which is comparable with 100 to 200 times effective dose received by chest PA examination. Therefore, when we should keep in mind the general principle of radiation protection, the risks of radiation exposure from patients are low and the medical personnel are considered to be safe from radiation exposure.
Humans ; Medical Staff ; Nursing Staff ; Radiation Protection ; Radiometry ; Thorax ; Thyroid Neoplasms ; Thyroidectomy

The authors retrospectively reviewed the efficacy of percutaneous catheter drainage in treatment of abdominal abscess associated with fistulas. One hundred sixty four consecutive patients with abdominal abscesses drained percutaneously since 1985 at department of Radiology, Wonkwang University Hospital were studied. Among these, 13 patients were found to have fistulous communications to the biliary duct, the intestinal tract, or the renal calyx. Eleven patients (85%) were successfully treated without surgical intervention while two patients (15%) needed surgical drainage and fistulectomy. The duration of drainage ranged from 7 days to 9 months. Initial drainage of abdominal abscess was performed in the hospital, but 5 of 13 patients were discharged with a tube in place and were followed up as outpatients. In conclusion, percutaneous catheter drainage is an effective and safe means of treating abdominal abscesses with fistulas.
Abdominal Abscess* ; Catheters* ; Drainage* ; Fistula* ; Humans ; Outpatients ; Retrospective Studies