No abstract available.
Animals* ; Hypertension, Portal* ; Models, Animal*

We herein report a case of transient acrodermatitis enteropathica in a 3-month-old, breast-fed, full-term infant. The patient was presented with a 2-month history of diarrhea and crusted erythema- tous patches on the periorificial area. Similar lesions were seen in his siblings. His serum zinc level and the zinc level in his mother's breast milk were markedly reduced. Diarrhea and skin lesions disappeared promptly with oral zinc supplementation and did not recur when zinc was discontinued after three weeks. Our case indicates that even full-term infants, who feed excl-usively on mothers milk, run a risk of developing zinc deficiency, if the concentration of zinc in the breast milk is very low.
Acrodermatitis* ; Diarrhea ; Humans ; Infant* ; Milk ; Milk, Human ; Mothers ; Siblings ; Skin ; Zinc

Purpura is discoloration of the skin and mucous membranes due to extravasation of red blood cells and may be due to a variety of factors, but it is sometimes difficult to identify the exact cause. Some forms of purpura can frighten the patient and puzzle the physician. Mask phenomenon is an unusual purpura of the relatively loose tissues of the face and neck occuring after prolonged coughing, vigorous vomiting, valsalva's maneuver, parturition, or any other exertion that raises intrathoracic or abdominal pressure. This occurs with acute onset and fades within twenty-four to seventy-two hours spontaneously. A work-up for a coagulation or platelet defect is usually not required. We herein describe five cases of mask phenomenon(unusual facial purpura).
Blood Platelets ; Cough ; Erythrocytes ; Humans ; Masks* ; Mucous Membrane ; Neck ; Parturition ; Purpura* ; Skin ; Valsalva Maneuver ; Vomiting

Purpura is discoloration of the skin and mucous membranes due to extravasation of red blood cells and may be due to a variety of factors, but it is sometimes difficult to identify the exact cause. Some forms of purpura can frighten the patient and puzzle the physician. Mask phenomenon is an unusual purpura of the relatively loose tissues of the face and neck occuring after prolonged coughing, vigorous vomiting, valsalva's maneuver, parturition, or any other exertion that raises intrathoracic or abdominal pressure. This occurs with acute onset and fades within twenty-four to seventy-two hours spontaneously. A work-up for a coagulation or platelet defect is usually not required. We herein describe five cases of mask phenomenon(unusual facial purpura).
Blood Platelets ; Cough ; Erythrocytes ; Humans ; Masks* ; Mucous Membrane ; Neck ; Parturition ; Purpura* ; Skin ; Valsalva Maneuver ; Vomiting

The most common cause of chronic cutaneous sinus tract in the face and neck is chronically draining dental infection. The diagnosis is easily confirmed by dental examination and dental roentgenogram of the involved area, but this disease is frequently misdiagnosed and incorrectly treated in dermatologic department. We report four cases of cutaneous sinus tract of dental origin. First patient had a painful nodule with chronically draining pus and a dimple on the left cheek. Second patient had a dimple with draining bloody fluid on the right chin. Third patient had a pea-sized papule with draining serous fluid on the left chin. Fourth patient had a fluctuant erythematous plaque with draining pus and a dimple on the left buccal area. In all four patients radiologic examination of the maxillary and mandibular regions demonstrated radioluency at the apex of tooth consistent with periapical abscess.
Cheek ; Chin ; Diagnosis ; Humans ; Neck ; Periapical Abscess ; Suppuration ; Tooth

No abstract available.
Child* ; Gastritis* ; Humans

The glandular odontogenic cyst is a rare lesion described in 1987. It generally occurs at anterior region of mandible in adults over the age of 40 and has a slight tendency to recur. Histopathologically, a cystic cavity lined by a nonkeratinized, stratified squamous, or cuboidal epithelium varying in thickness is found including a superficial layer with glandular or pseudoglandular structures. A 21-year-old male visited Dankook University Dental Hospital with a chief complaint of swelling of the left posterior mandible. Radiographically, a huge multilocular radiolucent lesion involving impacted 3rd molar at the posterior mandible was observed. Buccolingual cortical expansion with partial perforation of buccal cortical bone was also shown. Histopathologically, this lesion was lined by stratified squamous epithelium with glandular structures in areas of plaque-like thickening. The final diagnosis was made as a glandular odontogenic cyst.
Adult ; Diagnosis ; Epithelium ; Humans ; Male ; Mandible* ; Molar ; Odontogenic Cysts* ; Radiography, Panoramic ; Tomography, X-Ray Computed ; Young Adult

PURPOSE: This study was designed to compare the effective doses from low-dose and standard-dose multi-detector CT (MDCT) scanning protocols and evaluate the image quality and the spatial resolution of the low-dose MDCT protocols for clinical use. MATERIALS AND METHODS: 6-channel MDCT scanner (Siemens Medical System, Forschheim, Germany), was used for this study. Protocol of the standard-dose MDCT for the orthodontic analysis was 130 kV, 35 mAs, 1.25 mm slice width, 0.8 pitch. Those of the low-dose MDCT for orthodontic analysis and orthodontic surgery were 110 kV, 30 mAs, 1.25 mm slice width, 0.85 pitch and 110 kV, 45 mAs, 2.5 mm slice width, 0.85 pitch. Thermoluminescent dosimeters (TLDs) were placed at 31 sites throughout the levels of adult female ART head and neck phantom. Effective doses were calculated according to ICRP 1990 and 2007 recommendations. A formalin-fixed cadaver and AAPM CT performance phantom were scanned for the evaluation of subjective image quality and spatial resolution. RESULTS: Effective doses in microSv (E(2007)) were 699.1, 429.4 and 603.1 for standard-dose CT of orthodontic treatment, low-dose CT of orthodontic analysis, and low-dose CT of orthodontic surgery, respectively. The image quality from the low-dose protocol were not worse than those from the standard-dose protocol. The spatial resolutions of both standard-dose and low-dose CT images were acceptable. CONCLUSION: From the above results, it can be concluded that the low-dose MDCT protocol is preferable in obtaining CT images for orthodontic analysis and orthodontic surgery.
Adult ; Cadaver ; Female ; Head ; Humans ; Neck ; Orthodontics ; Phantoms, Imaging

This study examined effect of preceptorship on clinical education of senior nursing students of Y. University in Seoul. Quasi-experimental study design was used. Sixty students of pre-test and 80 of post-test participated in this study. Competency scores of the students before the clinical education(pre-competency scores) were compared with the competency scores after the clinical education(post-competency scores), and teacher evaluation scores between preceptors and clinical the data from students with preceptors(experimental group, N=22) and with clinical instructors(comparative group, N=58) were also examined. Study results indicated that the total post-competency scores were higher compared to the total pre-competency scores, and the difference was statistically significant. Among 7 sub-domains, differences were all statistically significant in 6 sub-domains except "self-esteem" domain. Competency scores of the students who had clinical education with had clinical education from clinical instructors. But the difference between those scores was not statistically significant. However, students gave higher evaluation scores to preceptors than clinical instructors. This study concluded that preceptorship did not influence much on clinical education at this time yet. However it is expected that when preceptors adjust their new roles and function them in expert education. This study recommended that for the preceptors to increase their motivation to teach students and to accept their roles, systemic rewards are needed.
Education* ; Humans ; Motivation ; Nursing* ; Preceptorship* ; Reward ; Seoul ; Students, Nursing*

PURPOSE: To determine if ultrasonography is a reliable technique to assess masseter muscle sites within intra- and interobserver and the scanning level and/or the muscle condition affect local cross-sectional dismension (LCSD) measurements of masseter muscle. MATERIALS AND METHODS: 10 subjects without sign and symptom of temporomandibular disorders and missing posterior teeth were examined by ultrasonography. Bilateral ultrasonographic examinations were performed with a linear (B-scan) 7.5 MHz small-part transducer to register LCSDs of the masseter muscle on three different levels. Scans were made on relaxed and clenching condition. Three oral and maxillofacial radiologists measured at two sessions with a time interval of at least 5 minutes. RESULTS: Variables such as 'condition' and 'level' had a significant effect on muscle measurements (p< 0.05). There was no significant difference between 'sessions' (p> 0.05) and 'observers' (p> 0.05). LCSDs on lower scan level were significantly thinner than those on upper and middle level. Those on clenching condition were significantly thicker than those on relaxed condition (p< 0.05). The scanning level with the highest reproducibility was middle with clenching condition (ICC = 0.90, MSE = 0.55%). CONCLUSION: The data suggested that ultrasonography was a reliable method for measuring LSCD of masseter muscle in intra- and interobserver and middle scan level showed the most reliable data.
Masseter Muscle* ; Temporomandibular Joint Disorders ; Tooth ; Transducers ; Ultrasonography