No abstract available.
Biofeedback, Psychology* ; Humans ; Hydrocortisone* ; Hypertension* ; Muscle Relaxation*

No abstract available.
Nipples*

No abstract available.
Neurofibroma*

No abstract available.
Female ; Humans ; Neck*

PURPOSE: This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to postcuring time. MATERIALS AND METHODS: A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute postcuring interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10 C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05). RESULTS: In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P <.05). On the external and intaglio surfaces, the root mean square (RMS) values of trueness and precision were the lowest in the 10-MPCI group. CONCLUSION Interim crowns with 10-minute post-curing showed high accuracy.

PURPOSE: This study aimed to compare the accuracy (trueness and precision) of interim crowns fabricated using DLP (digital light processing) according to postcuring time. MATERIALS AND METHODS: A virtual stone study die of the upper right first molar was created using a dental laboratory scanner. After designing interim crowns on the virtual study die and saving them as Standard Triangulated Language files, 30 interim crowns were fabricated using a DLP-type 3D printer. Additively manufactured interim crowns were post-cured using three different time conditions-10-minute post-curing interim crown (10-MPCI), 20-minute postcuring interim crown (20-MPCI), and 30-minute post-curing interim crown (30-MPCI) (n = 10 per group). The scan data of the external and intaglio surfaces were overlapped with reference crown data, and trueness was measured using the best-fit alignment method. In the external and intaglio surface groups (n = 45 per group), precision was measured using a combination formula exclusive to scan data (10 C2). Significant differences in accuracy (trueness and precision) data were analyzed using the Kruskal-Wallis H test, and post hoc analysis was performed using the Mann-Whitney U test with Bonferroni correction (α=.05). RESULTS: In the 10-MPCI, 20-MPCI, and 30-MPCI groups, there was a statistically significant difference in the accuracy of the external and intaglio surfaces (P <.05). On the external and intaglio surfaces, the root mean square (RMS) values of trueness and precision were the lowest in the 10-MPCI group. CONCLUSION Interim crowns with 10-minute post-curing showed high accuracy.

PURPOSE: To assess relative signal intensity changes in frontal and occipital white matter with age, as seenon T2 weighted axial MR images. MATERIALS AND METHODS: Thirty eight normal adults (20-29 years old) and 114children (0-11 years old) were investigated. All had nonspecific neurologic symptoms and their MR images, obtainedusing a 1.5T system (Signa, GE Medical Systems, Milwaukee, U.S.A), appeared to be normal. The signal intensitiesof frontal and occipital white matter were evaluated on T2 weighted axial images at the level of the foramen ofMonro. When the signal intensity of white matter was higher than that of gray matter, grade 0 was assigned ; whenthe opposite situation pertained, this was graded I_III. Grade I indicated that the signal intensity of occipitalwhite matter was lower than that of frontal white matter ; grade II, that the signal intensity of white matter ofboth lobes was similar. When the signal intensity of frontal white matter was lower than that of occipital whitematter, grade III was assigned. We divided the children's age by six months before 2 years of age, and by one yearafter 2 years of age, and then determined grade according to age, age distribution according to grade, and theages at which signal intensities were similar to those of adults. RESULTS: All 38 adults showed a grade IIIpattern ; this grade was apparent as early as 1.5 years of age and by 3 years of age, it was seen in over 50% ofchildren. After 8 years of age, all children were grade III. The age distribution of grade 0 was 0-0.5 years ofage, for grade I this was 0.5-2 years of age, for grade II it was 1-7, and for grade III, it was 1.5-11. CONCLUSION: On T2-weighted MR images, the signal intensity of frontal white matter ultimately shows a lowersignal intensity than that of occipital white matter.
Adult ; Age Distribution ; Child ; Humans ; Neurologic Manifestations

Proliferating cutaneous epithelial cyst is classified into two subtypes, proliferating trichilemmal cyst and proliferating epidermoid cyst, depending on the mode of keratinization or the origin of the tumors. Proliferating epidermoid cyst is a subepidermal cystic tumor showing, at least in focal areas, a cystic wall lined by epithelium typically seen in epidermoid cyst. We report a case of proliferating epidermoid cyst in a 58-year old man who had a 3x4 cm sized egg shaped cystic tumor on the occipital area of the scalp. Histopathologic examination revealed the tumor was a large epidermoid cyst and a portion of epithelial proliferation projected from the cyst wall into the dermis. The epithelial proliferation was surrounded by paucicellular fibrous stroma.
Dermis ; Epidermal Cyst* ; Epithelium ; Humans ; Middle Aged ; Ovum ; Scalp

BABCKGROUND: Vitiligo is a cornmon disorder whose cause is not well understood. Up to 30% of patients had another family member with vitiligo which means that vitiligo is a heritable condition. We could not find any study for the genetics of vitiligo in Korean literature. OBJECTIVE: The purpose of this study was to clarify how genetic factors are involved in the pathogenesis of vitiligo in Korean patients. METHODS: We analyzed the 65 Korean vitiligo probands and their families. Each family was ascertained through a proband afflicted with vitiligo. RESULTS: 1. Focal type of vitiligo(44.6%) appeared to be with the highest frequency followed by the non-segmental generalized type(35.4%) and segmental type(20.0%). 2. The t,ype of vitiligo was not related with sex (p>0.9, X(2)(d.l=2) = 0.14). 3. There was a clear pattern of a familial aggregation of the vitiligo disease. In 29(44.6%) of these 65 proband families, at least one first-degree relative of the proband had vitiligo. The incidence of people affected among their 789 relatives (first, second and third-degree) was also found to be 9.13+/-1.03% 4. Several families in this study were shown to have father-son transmission of vitiligo, which indicates that vitiligo does not fit an x-linked inheritance. 5. There is a statistically significant departure frorn the expected which is inconsistent with a utosomal dominant inheritance (p<0.001, X(2)(d.l=2) = 52.32). 6. A single recessive model at the autosomal locus is not an explanation in deter mining the cause of vitiligo. The threshold trait among first-degree relatives(8.8%) shows a tendency to approach the square root of the frequency in the general population(10%) compared to those of dominant(50%) or recessive(25%) models. This result is consistent with a model of multifactorial inheritence for vitiligo. CONCLUSION: These result indicate that vitiligo is determined by a polygenic nature.
Genes, X-Linked ; Genetics* ; Humans ; Incidence ; Mining ; Vitiligo* ; Wills

Primary pulmonary plasmacytoma (PPP) is extremly rare. Because of its rarity, PPP may present a diagnos-ticchallenge to the radiologists and there is a little information on the diagnosis and treatment of this condi-tion.We report on a patient with PPP presenting with a left hilar mass on chest radiograph and CT scan. The diagnosiswas confirmed by immunohistochemical study of the resected specimen.
Diagnosis ; Humans ; Plasmacytoma ; Radiography, Thoracic ; Tomography, X-Ray Computed