1.A Case of Submucosal Renal Pelvic Calcification and Ossification.
Sung Dae KWON ; Jae Hun CHOI ; Jae Heung CHO
Korean Journal of Urology 1990;31(4):617-619
We report a case of renal pelvic calcification and ossification simulating a renal pelvic stone. histopathological examination of resected kidney revealed submucosal calcification in the pelvic and ossified foci in the perivascular area. This is the first report in the Korean literature and have been reported 1 case in the English literature till now. This is very rare entity unrelated to amyloidosis.
Amyloidosis
;
Kidney
2.Clinical Value of Prostatic Biopsy in Patients with Elevated Serum PSA.
Jae Hong CHOI ; Heung Jae PARK ; Chil Hun KWON
Korean Journal of Urology 1996;37(10):1110-1116
We analyzed the results of the prostate biopsies of 64 patients with elevated serum PSA (>4ng/ ml) at Kangbuk Samsung Hospital from March 1993 to February 1996. Of 64 patients, 11 patients (17%) had prostate cancer and 53 patients (83%) were diagnosed as benign prostatic hyperplasia. Among the patients with prostate cancer, 1 patient had serum PSA between 4.1 to 10.0ng/ml, 2 patients between 10.1 to 20.0ng/ml and 8 patients above 20ng/ml The detection rates of prostate cancer in each serum PSA levels were 3%, 15% and 36% respectively. Two of 17 patients with both negative DRE and TRUS were diagnosed as prostate cancer Two of 21 patients with positive TRUS and negative DRE had prostate cancer but none of 8 patients with positive DRE and negative TRUS had prostate cancer. Seven of 18 patients with both positive TRUS and DRE had prostate cancer. The sensitivity, specificity, positive predictive value and overall accuracy of DRE and TRUS in patients with elevated PSA (>4ng/m1) were 64%, 64%, 27%, 64% and 82%, 43%, 23%, 50% respectively in patients with elevated serum PSA (>4ng/ml). In conclusion, these results suggest that prostate biopsy in early diagnosis of prostate cancer would be needed for the patients with elevated serum PSA (>4ng/ml) regardless of the results of DRE and TRUS.
Biopsy*
;
Early Diagnosis
;
Humans
;
Prostate
;
Prostate-Specific Antigen
;
Prostatic Hyperplasia
;
Prostatic Neoplasms
;
Sensitivity and Specificity
3.Malignant Granular Cell Tumor of the Shoulder: A case report.
Jae Hun CHUNG ; Jae Hyuk LEE ; Jong Hee NAM ; Chan CHOI ; Min Cheol LEE
Korean Journal of Pathology 2000;34(6):475-479
A malignant granular cell tumor (MGCT) occurred in the left shoulder of a 62-year-old man. The patient underwent wide marginal excision followed by chemotherapy and radiotherapy. A metastatic tumor was identified in the axillary lymph node 22 months after the excision of the shoulder mass. The primary tumor was a poorly circumscribed mass measuring 5 5 4 cm. On cut section, it was a solid mass with yellowish tan color. Histologically, both primary and metastatic tumor consisted of polygonal cells with abundant granular cytoplasm and a vesicular nucleus with a prominent nucleolus. Two to three mitotic figures per ten high power fields at 200 were counted. Tumor cells were weakly stained with periodic acid-Schiff (PAS) preparation both before and after diastase digestion, and were positive for S-100 protein, neuron-specific enolase (NSE), and vimentin. By electron microscopy, the cytoplasm was filled with numerous autophagolysosomes containing myelin figures, mitochondria, and fragmented rough endoplasmic reticula. Basal laminae and angulated bodies were also noted. These findings suggest schwannian differentiation of this tumor.
Amylases
;
Basement Membrane
;
Cytoplasm
;
Digestion
;
Drug Therapy
;
Granular Cell Tumor*
;
Humans
;
Immunohistochemistry
;
Lymph Nodes
;
Microscopy, Electron
;
Middle Aged
;
Mitochondria
;
Myelin Sheath
;
Phosphopyruvate Hydratase
;
Radiotherapy
;
S100 Proteins
;
Shoulder*
;
Triacetoneamine-N-Oxyl
;
Vimentin
4.Congenital aortopulmonary fistula presenting as an exertional dyspnea.
Tae Hun KIM ; Chan Il MOON ; Jae Woong CHOI ; Myung Ju CHOI
Korean Circulation Journal 2000;30(10):1291-1294
Aortopulmonary fistula is an exceedingly rare vascular malformation. It is commonly derived after chest injuly or from complication of chest operation and aortic dissection and congenital aortopulmonary fistula is only several cases combined with Tetralogy of Fallot or aortic stenosis. But a congenital aortopulmonary fistula without any hemodynamic abnormalities was not reported. A 56-year old man with exertional dyspnea was admitted. In an examination on admission, there were no abnomalities. Aortography showed an aortopulmonary fistula that branches from the ascending aorta adjacent to the right coronary artery, running to the main pulmonary artery. Transcatheter coil embolization was performed and he was discharged 7 day after embolization without complication. Exertional dyspnea disappeared and careful follow up has be performed periodically.
Aorta
;
Aortic Valve Stenosis
;
Aortography
;
Coronary Vessels
;
Dyspnea*
;
Embolization, Therapeutic
;
Fistula*
;
Follow-Up Studies
;
Hemodynamics
;
Humans
;
Middle Aged
;
Pulmonary Artery
;
Running
;
Tetralogy of Fallot
;
Thorax
;
Vascular Malformations
5.A Case of Acute Rhenmatic Fever Associated with Acute Poststreptococcal Glomerulonepheitis.
Ho Kyung CHOI ; Dong Seok CHOI ; Jae Ho LEE ; Young Hun CHUNG ; Hyon Soon LEE
Journal of the Korean Pediatric Society 1989;32(12):1744-1748
No abstract available.
Fever*
6.Immediate oromandibular reconstruction by osteocutaneous free flap after composite resection.
Jang Su SUH ; Jin Kyu PARK ; Ywong Hun KWON ; Jae Sung CHOI ; Kyeong Jong CHOI
Korean Journal of Otolaryngology - Head and Neck Surgery 1993;36(4):758-765
No abstract available.
Free Tissue Flaps*
7.A Case of Renal Cell Carcinoma which was Metastasized to Ureter, Bladder and Genital Organ.
Doo Jae MAENG ; Jun CHEON ; Jae Hun CHOI ; Jae Heung CHO
Korean Journal of Urology 1988;29(5):821-824
The metastasis of renal cell carcinoma to ureter, urinary bladder and uterus are not common, only a few cases were reported. A 63 years old female was admitted to department of urology, Korea university hospital with intractable hematuria, vaginal bleeding and severe frank pain on left is side with abdominal distension. Herein we are presenting a case of metastatic renal cell carcinoma with review and literature.
Carcinoma, Renal Cell*
;
Female
;
Genitalia*
;
Hematuria
;
Humans
;
Korea
;
Middle Aged
;
Neoplasm Metastasis
;
Ureter*
;
Urinary Bladder*
;
Urology
;
Uterine Hemorrhage
;
Uterus
8.Treatment of hookworm infection with furfurol.
Dong Wik CHOI ; Sung Deok PARK ; Jae Woun KIM ; Chung Hun CHOY ; Yung Myung KIM
The Korean Journal of Parasitology 1972;10(1):22-26
Furfurol(Furfudol), a new anthelmintics, was administered to 7 adults and 21 children (6-12 years old) in total amounts of 15.6 mg(base) for 1 to 3 days. It has proven to be effective against hookworms. The anthelmintic effect against hookworms with a single dose of 15.6 mg of furfurol was similar to that of a single dose of 2.5 gm of bephenium hydroxynaphthoate. However, when a total of 15.6 mg of the base was given to both children and adult, the side reactions were so mild that the drug can be administered for therapeutic regimens in mass treatment. Minor abdominal discomfort was the only common side effect. This is the primary advantage of furfurol as compared with bephenium hydroxynaphthoate. These results have indicated that furfurol is safe in therapeutic dosage and is an effective agent to treat patients infected with hookworms.
parasitology-helminth-nematoda-hookworm
;
chemotherapy-furfurol
;
bephenium hydroxynaphthoate
;
furfurol
9.The Values of Calcium, Uric Acid, Magnesium and Magnesium/Calcium Ratio in Urine with the Urinary Calculi.
Gil Ho LEE ; Jai Hun CHOI ; Jae Heung CHO
Korean Journal of Urology 1987;28(6):815-820
There was no definitive reported cases of urinary calculi. This study is to estate the value of urinary calcium, magnesium, uric acid and magnesium/calcium ratio in cases of urinary calculi. The amount of calcium, uric acid and magnesium in 24 hour urinary excretion was measured by OCPC, Uricase and titan yellow method in 56 cases of upper urinary calculi compared with 35 control group.The results were summerized as follows.l. The mean values of 24 hour urinary excretion of calcium were 193+/-26mg/day in stone formers and 15l+/-25mg/day in control group. The 24 hour urinary excretion of calcium in the stone formers were significantly higher than those of the control group. 2. The mean values of 24 hour urinary excretion of uric acid were 498+/-40mg/day in the stone formers and 371+/-6mg/day in the control group. The 24 hour urinary excretion of uric acid in the stone formers were significantly higher than those of the control group. 3. Urinary magnesium values have not been shown any significant differences between the group with urinary calculi and those of control group. 4. The mean values of 24 hour urine of magnesium to calcium ratio was 1.01+/-0.95 in stone formers and l.42+/-1.31 in the control group. The magnesium to calcium ratio in the stone formers were significantly lower than those of the control group. These results suggest that increased urinary calcium and uric acid level may play some role in the genesis of urinary stone but urinary magnesium value was not different in the two groups. We think that a decrease in the urinary magnesium to calcium ratio was the results of increased excretion of calcium rather than lowered excretion of the magnesium for the stone formers.
Calcium*
;
Magnesium*
;
Saturn
;
Urate Oxidase
;
Uric Acid*
;
Urinary Calculi*
;
Urolithiasis
10.A STUDY OF ION BEAM ASSISTED DEPOSITION(IBAD) OF TiN ON Ni-Cr Be ALLOY FOR SURFACE CHARACTERISTIC.
Soo Young CHOI ; Sun Hyung LEE ; Ik Tae CHANG ; Jae Ho YANG ; Hun Young CHUNG
The Journal of Korean Academy of Prosthodontics 1999;37(2):212-234
Dental restorative materials must have the physical properties to withstand wear and corrosion. Base metal alloys possess better mechanical properties and lower price than the gold alloys. For these reason such alloys have largely replaced the precious metal alloys. One aspect to consider is the release of metal substances to oral environment. The release of elements from dental alloys is a continuing concern because the elements may have the potentially harmful biological effects on local tissue. The purpose of this study was to minimize metal release on the nonprecious metal surfaces by ion bea assisted deposition(IBAD) of titanium nitride (TiN). Ni-Cr-Be alloys with and without TiN coatings were secured in an wear test machine opposing ruby ball to determine their relative resistance to wear with 100m, 200m, 300m and 400m sliding distance. And the corrosion behavior of the Ni-Cr-Be alloys with and without TiN coating and 3 dental noble alloys have been studied. Potentiodynamic curves were used to analyse the corrosion characteristics of the alloys. The measurement of the released Ni and Ci ions was conducted by analysis of the electrolyte solution with atomic absorption spectroscopy. The results were as follows : 1. The critical sliding distance that wore down TiN coating of 2.5micrometer thickness in this study condition was 300m. 2. Ion beam assisted deposition of TiN showed a good surface modification with respect to the properties of wear and corrosion resistance. 3. X-ray diffraction showed that the strongest peak of TiN(111) in the coatings. 4. The release of Ni and Cr ions from alloys measured by means of atomic absorption spectroscopy was reduced by ion beam assisted deposition of TiN.
Absorption
;
Alloys*
;
Corrosion
;
Dental Alloys
;
Gold Alloys
;
Ions
;
Spectrum Analysis
;
Tin*
;
Titanium
;
X-Ray Diffraction