BACKGROUND: Even though excellent impression materials are now available for making accurate replication for hard and soft tissue, the numerous dentists have faced lots of obstacles in making simultaneous impressions of multiple abutments. CASE DESCRIPTION: This article describes a modified method of tray fabrication using auto-polymerizing acrylic resin and impression technique for multiple prepared teeth in cases with limitations and difficulties in taking dental impressions. CLINICAL IMPLICATION: This segmental tray technique has several advantages, including higher impression quality, fewer impressions, and being more comfortable for the patient and less stressful for the clinician.
Dentists ; Humans ; Tooth

Two cases of vertebra plana due to eosinophilic granuloma were experienced and successfully treated by anterior fusion of the involved spines at the department of Orthopedic Surgery in Seoul National University Hospital. Literature on the subject was reviewed.
Eosinophilic Granuloma ; Granuloma ; Orthopedics ; Seoul ; Spine

Albinism is an inherited ongenital disarder in which there is sgr neralized decrease or absence of pigrnent in the eyes, skin, and hair. There are two general groups (1) Oculocutneou albinism, (2) Ocular albinism. Skin cancers in albinos are rare in ternperate clirnats and t.hey occur rnostly on sun ex posed areas. We present a case of recurrance of squarnous cell carcinoma ir a Korean albinoid on both sides of the neck and right ear. On liistopathologic examination, we find I or pearls, and irregular mases of epidermal cells that proliferite downward into the devmis. The invaing cell masses are composed of atypical squamous cells.
Albinism ; Albinism, Ocular ; Carcinoma, Squamous Cell* ; Ear ; Hair ; Neck ; Skin ; Skin Neoplasms ; Solar System

The prognostic significance of vascular (blood and lymphatic vessels) invasion was evaluated in a retrospective review of 27 patients with upper urinary tract transitional cell carcinoma from January 1985 to December 1993, who underwent a nephroureterectomy with bladder cuff resection. Vascular invasion was found in 10 patients (37%). The incidence of vascular invasion was well correlated with tumor grade and stage. The incidence of postoperative metastases was significantly higher in the patients with (70%) than without (17.6%) vascular invasion (p<0.05). The survival rate of the patients with vascular invasion was significantly lower than in those without vascular invasion (p<0.01). In multivariate Cox`s regressional analysis the prognostic value of vascular invasion was independent of tumor grade and stage. These results indicate that vascular invasion should predict a more unfavorable outcome in patients with upper urinary tract transitional cell carcinoma as an independent morphological indicator.
Carcinoma, Transitional Cell* ; Humans ; Incidence ; Lymphatic Vessels* ; Neoplasm Metastasis ; Prognosis ; Retrospective Studies ; Survival Rate ; Urinary Bladder ; Urinary Tract*

Eccrine nevus is an unusual entity with various clinical manifestations. Histologically the eccrine apparatus appears simply increased in number and/or size, but structurally normal. We present a case of eccrine nevus on the dorsum of the left 3rd and 4th fingers in a 20 year-old female. The lesions were 3 × 2cm sized, well demarcated, smooth surfaced, brownish plaques with mild hyperhidrosis. Histological examination revealed hyperkeratosis in the stratum corneum and hyperpigmentation of basal layer, and an increased number of eccrine sweat glands and many eccrine coils in the dermis was seen.
Dermis ; Female ; Fingers ; Humans ; Hyperhidrosis ; Hyperpigmentation ; Nevus* ; Sweat Glands

No abstract available.
Trophoblasts*

After the analysis of 40 pediatric patients who underwent exploratory surgery under the diagnostic impression of testicular torsion for the period of 8 years from January 1981 to December 1988 in terms of age distribution, clinical features, diagnostic methods, therapeutic options, outcome and follow up, the results can be summarized as follows : 1. The most common causes of the disorder were testicular torsion (50% ), and torsion of append ages (33%). The remaining 17% of the cases were acute epididymitis (13%), orchids (2%), and hydrocele (2%). The prevalent ages for testicular torsion was over 11 years old (80%). On the other hand, torsion of appendages mainly affected children below 11 years old. 2. The observation of the presence or absence of the cremasteric reflex helped to differentiate the diagnosis of acute scrotum. Testicular scanning in 2 cases with vague symptoms provided to determine testicular torsion. With the endoscopic evaluation of the inside of tunica vaginalis, which was the first trial in these cases, we diagnosed 2 cases of testicular torsion. 3. Among the 20 patients with testicular torsion, 7 required orchiectomy because of obvious necrosis. There were 13 testes considered to be salvageable and they were fixed successfully. The early salvage rate of surgery in testicular torsion was 100% (9/9) for the patients operated less than 24 hours after torsion, and 36% (4/11) for the patients over 24 hours. The overall immediate testicular salvage rate was 65% (13/20). 4. Semen analyses revealed normal for 2 patients who underwent orchiectomy for testicular torsion that had lasted over 48 hours. Testicular scans 2 weeks after fixation in 2 patients with testicular torsion that had lasted 12 and 16 hours, showed normal perfusion. In conclusion, immediate scrotal exploration followed by appropriate treatment would result to maximal testicular salvage, minor morbidity and rapid symptomatic improvement in patients with pediatric acute scrotum.
Age Distribution ; Child* ; Diagnosis ; Epididymitis ; Follow-Up Studies ; Hand ; Humans ; Male ; Necrosis ; Orchiectomy ; Perfusion ; Reflex ; Scrotum ; Semen Analysis ; Spermatic Cord Torsion ; Testis*

No abstract available.
Cloning, Molecular* ; DNA* ; Helicobacter pylori* ; Helicobacter* ; Sequence Analysis, DNA* ; Urease*

BACKGROUND AND PURPOSE: We had previously demonstrated by immunohistochemical study (IHS) that nm23-H1 gene may play an important role in disease prognosis as well as its participation in metastasis of urothelial cancer. The purpose of present study was 1) to reexamine the role of nm23-H1 gene in urothelial cancers at molecular level, 2) to identify the molecular mechanism of decreased immunoreactivity for nm23-H1 protein in metastatic urothelial cancers, and 3) to identify whether IHS is reliable in studying the expression of nm23-H1. MATERIALS AND METHODS: We studied expression level and mutation profiles of nm23-H1 gene in 25 fresh surgical specimens of urothelial cancer by reverse transcription polymerase chain reaction(RT-PCR)-Southern blotting analysis, and PCR of genomic DNA followed by single strand conformation polymorphism and sequencing analysis. The results of RT-PCR-Southern blotting were comparatively analyzed with those of IHS. RESULTS: mRNA transcript levels of nm23-H1 gene were significantly decreased in tumor tissues with metastasis as compared with those without metastasis. The transcript levels of nm23-H1 gene were also significantly decreased in metastatic tumor tissues as compared with primary tumor tissues. Point mutation of nm23-H1 gene was detected in only 1 of 13 urothelial cancer tissues with metastasis, whereas, mutation was observed in none of those without metastasis. The results of IHS corresponded with those of RT-PCR-Southern blotting analysis in 23 of 25 specimens. CONCLUSIONS: The nm23-H1 gene may play an important role in metastasis of urothelial cancer. Decreased transcription at mRNA level may be a major molecular mechanism of loss of immunoreactivity for nm23-H1 protein in urothelial cancer. IHS used in the present study may be a clinically useful method to study the expression of nm23-H1 and to predict metastasis potential and prognosis of urothelial cancers.
DNA ; Neoplasm Metastasis ; Point Mutation ; Polymerase Chain Reaction ; Prognosis ; Reverse Transcription ; RNA, Messenger ; Urologic Neoplasms*

No abstract available.
Encephalitis, Arbovirus*