Trichoadenoma is a rare tumor with differentiation towards the infundibular portion of the pilosebaceous canal. Clinically, it is a nodular growth, usually on the face and buttock. Histologically, it is characterized by numerous horn cysts lined with squamous epithelium in the dermis. In this report, we describe a 44-year-old man who developed trichoadenoma on his right shin. Anti-CD34 antibody stained spindle-shaped cells in the stroma just adjacent to the peripheral layers of keratinous cysts and solid masses of squamous epithelial cells. To our knowledge, this is the first description of an occurrence of trichoadenoma in the lower leg and the first to use immunohistochemical staining to know the CD34 staining pattern.
Adult ; Animals ; Buttocks ; Dermis ; Epithelial Cells ; Epithelium ; Horns ; Humans ; Leg

No abstract available.
Factor X*

OBJECTIVES: The objective of the present study was to identify the factors that influence the happiness index of community residents, by considering personal and regional aspects, and to use as evidence of efforts for improvement of the happiness index. METHODS: The study was conducted based on information from 16,270 participants who met the data requirement among those who participated in the 2011 South Gyeongsang Community Health Survey. Of the factors that can influence the happiness index, socioeconomic characteristics, health behavior, morbidity, and healthcare use, social contact, and participation in social activities were classified as personal factors; for regional factors, data from the 2010 census were used to extrapolate the regional deprivation indices at the submunicipal-level (eup, myeon, and dong) in South Gyeongsang Province. The happiness index for each characteristic was compared to that for others via t-test and ANOVA, and multilevel analysis was performed, using four models: a basic model for identification of only random effects, model 1 for identification of personal factors, model 2 for identification of regional factors, and model 3 for simultaneous consideration of both personal and regional factors. RESULTS: The mean happiness index was 63.2 points (64.6 points in males and 62.0 points in females), while the mean deprivation index was -1.58 points. In the multilevel analysis, the regional-level variance ratio of the basic model was 10.8%, confirming interregional differences. At the personal level, higher happiness indices were seen in groups consisting of males with high educational level, high income, high degree of physical activity, sufficient sleep, active social contact, and participation in social activities; whereas lower happiness indices were seen in people who frequently skipped breakfast, had unmet healthcare needs, and had accompanying diseases, as well as those with higher deprivation index. CONCLUSIONS: The study confirmed that the happiness index of community residents was influenced by not only personal aspects but also various regional characteristics. To increase the happiness index, interests at both personal and regional levels, as well as community emphasis on creating social rapport and engaging in selective efforts, are needed in vulnerable regions with relatively high deprivation index.
Breakfast ; Censuses ; Delivery of Health Care ; Happiness* ; Health Behavior ; Health Surveys ; Humans ; Male ; Motor Activity ; Multilevel Analysis*

PURPOSE: This study attempted to investigate the effects of supply of highly concentrated (30%) oxygen on human ability of visuospatial cognition using time course data analysis of functional Magnetic Resonance Imaging (fMRI). MATERIALS AND METHODS: To select an item set in the visuospatial performance test, two questionnaires with similar difficulty were developed through group testing. A group test was administered to 263 college students. Two types of questionnaire containing 20 questions were developed to measure the ability of visuospatial cognition. Eight college students (right-handed male, average age of 23.5 yrs) were examined for fMRI study. The experiment consisted of two runs of the visuospatial cognition testing, one with 21% level of oxygen and the other with 30% oxygen level. Each run consisted of 4 blocks, each containing control and visuospatial items. Functional brain images were taken from 3T MRI using the single-shot EPI method. Using the subtraction procedure, activated areas in the brain during visuospatial tasks were col-orcoded by t-score. To investigate the time course data in each activated area from brain images, 4 typical regions (cerebellum, occipital lobe, parietal lobe, and frontal lobe) were selected. RESULTS: The average accuracy was 50.63 +/-8.63 and 62.50 +/-9.64 for 21% and 30% oxygen respectively, and a statistically significant difference was found in the accuracy between the two types of oxygen (p<0.05). There were more activation areas observed at the cerebellum, occipital lobe, parietal lobe and frontal lobe with 30% oxygen administration. The rate of increase in the cerebellum, occipital lobe and parietal lobe was 17% and that of the frontal lobe, 50%. Especially, there were increase of intensity of BOLD signal at the parietal lobe with 30% oxygen administration. The increase rate of the left parietal lobe was 1.4% and that of the right parietal lobe, 1.7%. CONCLUSION: It is concluded that while performing visuospatial tasks, high concentrations of oxygen administration make oxygen administration sufficient, thus making neural network activate more, and the ability to perform visuospatial tasks increase.
Brain ; Cerebellum ; Cognition ; Frontal Lobe ; Humans ; Magnetic Resonance Imaging* ; Male ; Occipital Lobe ; Oxygen* ; Parietal Lobe ; Surveys and Questionnaires ; Statistics as Topic*

PURPOSE: This study attempted to investigate the effects of supply of highly concentrated (30%) oxygen on human ability of visuospatial cognition using time course data analysis of functional Magnetic Resonance Imaging (fMRI). MATERIALS AND METHODS: To select an item set in the visuospatial performance test, two questionnaires with similar difficulty were developed through group testing. A group test was administered to 263 college students. Two types of questionnaire containing 20 questions were developed to measure the ability of visuospatial cognition. Eight college students (right-handed male, average age of 23.5 yrs) were examined for fMRI study. The experiment consisted of two runs of the visuospatial cognition testing, one with 21% level of oxygen and the other with 30% oxygen level. Each run consisted of 4 blocks, each containing control and visuospatial items. Functional brain images were taken from 3T MRI using the single-shot EPI method. Using the subtraction procedure, activated areas in the brain during visuospatial tasks were col-orcoded by t-score. To investigate the time course data in each activated area from brain images, 4 typical regions (cerebellum, occipital lobe, parietal lobe, and frontal lobe) were selected. RESULTS: The average accuracy was 50.63 +/-8.63 and 62.50 +/-9.64 for 21% and 30% oxygen respectively, and a statistically significant difference was found in the accuracy between the two types of oxygen (p<0.05). There were more activation areas observed at the cerebellum, occipital lobe, parietal lobe and frontal lobe with 30% oxygen administration. The rate of increase in the cerebellum, occipital lobe and parietal lobe was 17% and that of the frontal lobe, 50%. Especially, there were increase of intensity of BOLD signal at the parietal lobe with 30% oxygen administration. The increase rate of the left parietal lobe was 1.4% and that of the right parietal lobe, 1.7%. CONCLUSION: It is concluded that while performing visuospatial tasks, high concentrations of oxygen administration make oxygen administration sufficient, thus making neural network activate more, and the ability to perform visuospatial tasks increase.
Brain ; Cerebellum ; Cognition ; Frontal Lobe ; Humans ; Magnetic Resonance Imaging* ; Male ; Occipital Lobe ; Oxygen* ; Parietal Lobe ; Surveys and Questionnaires ; Statistics as Topic*

PURPOSE: This study purposed to measure the standard volume of the cerebellum of normal Koreans who were in their 20s and 40s, and we also wished to find out the difference in the volume of the cerebellum according to gender and age. MATERIALS AND METHODS: This study collected MR brain images from 118 people in their 20s (males: 58, females: 60) and 100 people in their 40s (males: 41, females: 59), for a total of 218 people. For each of sagittal, coronal and axial sections, the cerebellar part of the images was segmented using automatic and manual methods, and the volume was then measured. In order to observe differences according to gender and age and also to observe the interactive effect between gender and age, a two-way ANOVA test was performed using gender (2 levels) and age (2 levels) as independent variables. RESULTS:The average volume of the cerebellum of Koreans in their 20s was 133.74 (cm3) and that of Koreans in their 40s was 121.83 (cm3). The average volume of the cerebellum of male Koreans in their 20s and 40s was 134.55 (cm3) and that of female Koreans was 123.06 (cm3). The volume of the cerebellum was significantly larger in Koreans in their 20s than those volumes of the cerebellum of Koreans in their 40s, and the cerebellum volumes in male Koreans were larger than those of the Korean females. Moreover, the reduction of the volume of the cerebellum with age was significantly larger in male Koreans than in the Korean females. CONCLUSION: According to the results of measuring the volume of the cerebellum for normal Koreans in their 20s and 40s, the volume was significantly different according to gender and age, and the reduction of the volume of the cerebellum with age was significantly larger in men than in women.
Brain ; Cerebellum ; Female ; Humans ; Magnetic Resonance Imaging* ; Male

Researches on brain functions using MRI or PET generally involve the process that normalizes spatially the results of functional images into a standard brain template in order to find out a common activation area of multiple subjects. So far MNI305, which is Western people's standard brain template, has been commonly used. However, the brain may be different morphologically and structurally among human races, so the use of MNI305 may produce inaccurate results. Furthermore, because the size and shape of the brain vary according to gender and age, if brain temperatures are developed considering these factors, brain activation areas may be identified more precisely. This study collected MR brain images from 121 men and women in their 20s (23.0 +/-2.6 years on the average) and 99 men and women in their 40s (47.5 +/-3.7 years on the average). After eight reference points were defined using the method proposed by Nowinski, the image that had the least error from the mean distances among the reference points was selected as the representative brain image. All images were affine-transformed into the representative brain image, and average brain templates were created by age and gender through averaging the brightness of images. The results of this study may be utilized in Korean brain probability maps to be developed in the future for more precise research on the functions of Koreans' brain.
Brain* ; Continental Population Groups ; Female ; Humans ; Magnetic Resonance Imaging ; Male

The malignant peripheral nerve sheath tumor is a rare neoplasm arising from the neural sheath of peripheral nerve sheath, accounting for less than 5% of all soft tissue malignancy. Most tumors occur in patients with neurofibromatosis and solitary malignant peripheral nerve sheath tumor without neurofibromatosis is rare. A review of the literature revealed that there were relatively few documeted cases of these tumors involving digits, although there were several cases of these tumors involving the major peripheral nerve trunk. We report a case of solitary malignant peripheral nerve sheath tumor on a finger, which neither originated from the major peripheral nerve nor was associated with neurofibromatosis. A 46-year-old woman showed a solitary, child palm-sized, eroded fungating tumor on her right third finger tip. Immunohistochemical studies for S-100, neuron-specific enolase, vimentin and electron microscopy were used in the diagnosis, confirming the neural origin of this tumor.
Child ; Cytochrome P-450 CYP1A1 ; Diagnosis ; Female ; Fingers* ; Humans ; Microscopy, Electron ; Middle Aged ; Neurofibromatoses ; Neurofibromatosis 1 ; Peripheral Nerves* ; Phosphopyruvate Hydratase ; Vimentin

The purpose of this study is to measure the standard volume of the ventricle of normal Koreans in their 20s and 40s and find out difference in the volume of the ventricle according to age and gender. We collected MR brain images from 118 people in their 20s (male 58, female 60)and 100 people in their 40s (male 41, female 59), so a total of 218 people.For each of sagittal, coronal and axial sections, the ventricular part was segmented using automatic and manual methods, and the volume was measured. In order to observe difference according to age and gender and to observe the interactive effect between age and gender, two-way ANOVA was carried out using age (2 levels)and gender (2 levels)as independent variables. The average volume of the ventricle of Koreans in their 20 s was 16.2 [cm3]and that of Koreans in their 40s was 23.1 [cm3].The average volume of the ventricle of male Koreans in their 20s and 40s was 21.9 [cm3]and that of female Koreans was 17.5 [cm3].The volume of the ventricle was significantly larger in Koreans in their 40s than those in their 20s, and in male Koreans than n female ones. Moreover, the increase of the volume of the ventricle with age was significantly larger in male Koreans than in female ones. According to the results of measuring the volume of the ventricle of normal Koreans in their 20s and 40s, the volume was significantly different according to age and gender, and the increase of the volume of the ventricle with age was significantly larger in men than in women.
Brain ; Female ; Humans ; Magnetic Resonance Imaging ; Male

Several types of cyst may occur in the neck. Branchial cleft cyst is the most common cystic lesion, but the first branchial cleft cyst is a very rare disease. Cystic cervical lesions may be mistaken for enlarged lymph nodes or tumors. To avoid interpretation errors, aspiration of all cysts or cystic lesions must be followed by careful palpation and reaspiration of any residual mass. Further, a careful analysis of the patient's clinical data is of value. In questionable cases, surgical excision of the cystic tumor for histologic examination is recommended. We report a case of basal cell adenoma arising in the first branchial cleft cyst. This case support the hypothesis that lymphoepithelial cysts of the major salivary glands arise from inclusions of salivary gland tissue in lymph node.
Adenoma* ; Branchial Region* ; Branchioma* ; Lymph Nodes ; Neck ; Palpation ; Rare Diseases ; Salivary Glands