No abstract available.
Humans ; Stomach Neoplasms* ; Stomach* ; T-Lymphocytes*

A case of a 58-year-old man with malignant fibrous histiocytoma (MFH) of the right ventricle is reported light and electron microscopically. This is the first case of MFH of the heart in the Korean literature. A tendency for malignant fibrous histiocytoma of the heart to occur in the left atrium of young women is suggested; this sarcoma's usual location is in the soft tissue of elderly men. The tumor consisted of spindle cells arranged in a focal storiform patterns, clusters or sheets of histocyte-like cells, benign and malignant giant cells, inflammatory cells, scattered mitotic figures and anaplasia of stromal cells. In ultrastructure the constituent of cells of the tumor are primitive mesenchymal cells, histiocytoid cells and fibroblast like cells including giant cells.
Female ; Male ; Humans

No abstract available.
Chorion* ; Chorionic Villi Sampling* ; Chorionic Villi* ; Female ; Fetus* ; Pregnancy ; Prenatal Diagnosis* ; Trisomy*

PURPOSE: We performed dynamic MR imaging using GdDTPA to find characteristic enhancement pattern of hepatic hemangioma distinguishing from hepatocellular carcinoma. METHODS AND MATERIALS: 28 hepatic hemangiomas and 10 hepatocellular carcinomas were evaluated. Serial dynamic scans after Gd-DTPA(0.1mmol/kg) intravenous injection were obtained by using 0.5T machine and analyzed contrast-to-noise ratio(CNR) of the lesion and enhancement pattern on each scan. RESULTS: Hepatic hemangiomas had positive CNR from 1-2 minute images, and revealed typical "fill-in phenomenon" on early phase with prolonged enhancement in 26 cases(92.8%), and early homogeneous enhancement with isointensity on delayed phase in 2 cases(7.2%) of small hemangiome~ Hepatocellular carcinomas revealed inhomogeneous enhancement with hypointensity on delayed phase in 10 cases(100%) and 3 cases (30%) of capsular enhancement. CONCLUSION: Hepatic hemangioma can be easily distinguished from hepatocellular carcinoma by using Gd DTPA enhanced dynamic MR imaging according to its typical enhancement pattern of "fill-in phenomenon" and prolonged enhancement.
Carcinoma, Hepatocellular ; Diagnosis, Differential* ; Gadolinium DTPA ; Hemangioma* ; Injections, Intravenous ; Magnetic Resonance Imaging*

Taurodontism is an anomaly characterized by a long and broad pulpal cavity and consumed apical location of the furcation area. This study aimed to determine the prevalence of taurodontism in deciduous molars based on digital panoramic radiographs of children. The study was performed on a sample of panoramic radiographs taken from 2,473 Korean children who visited the department of pediatric dentistry, Yonsei University Dental Hospital between Nov. 2005 and Mar. 2018. Taurodontism was mainly categorized by Daito’s method. Using panoramic radiographs, taurodontism was also categorized into mesotaurodontism, hypotaurodontism, and hypertaurodontism. Mesotaurodontism was the most prevalent type. A total of 2,473 panoramic radiographs were evaluated. The prevalence of taurodontism was 5.7% in general, 51.5% in the left quadrant, 48.5% in the right quadrant, 6.3% in the maxilla, and 93.7% in the mandible. The distribution of taurodontism stratified by gender showed a higher prevalence in males. This is a comprehensive study on the prevalence of taurodontism in children using the largest sample size to date.

OBJECTIVES: Apathy Evaluation Scale (AES) is one of the most frequently used scales to evaluate apathy. The purpose of this study was to evaluate the reliability and validity of the Korean version of the AES (K-AES) and to apply the K-AES in examining the characteristics of apathy in the Korean patients with schizophrenia. METHODS: 129 healthy people and 29 patients with schizophrenia have been evaluated using the K-AES, Physical Anhedonia Scale (PAS), Social Anhedonia Scale (SAS), and the Beck's Depression Inventory (BDI). Split-half reliability and internal consistency were evaluated and factor analysis and correlation analysis was conducted. Between-group comparison was conducted using independent sample t-tests. RESULTS: K-AES showed good reliability and validity. Factor analysis confirmed 3 factors, which represented interest and drive, initiative, self-awareness and self-assessment. Patients with schizophrenia showed significantly higher K-AES and BDI scores than the healthy group. K-AES scores in patients with schizophrenia were significantly correlated with the PAS score, but did not correlate with SAS and BDI scores. CONCLUSION: This study demonstrates the reliability and validity of the K-AES. Our findings also suggest that the K-AES may be a reliable instrument in assessing apathy as a negative symptom in patients with schizophrenia.
Anhedonia ; Apathy* ; Depression ; Factor Analysis, Statistical ; Humans ; Reproducibility of Results* ; Schizophrenia* ; Self-Assessment ; Weights and Measures

BACKGROUND: Surgical intervention is known as the principle management for hemoptysis of significant amount But surgical procedure is applicable 13 only small number of patients because of increased mortality in emergency surgery and various functional and structural problems after lung resection. Bronchial artery embolization(BAE) has been used as an alternative interventional technique for immediate control of patients with increased risk for surgery due 19 recurrent or massive hemoptysis. BAE also has limitations such as recurrent bleeding after procedure and its role for the application to small amount of hemoptysis is still not established. METHOD: To evaluate immediate and long term effectiveness of BAE, we analysed 65 patients with hemoptysis according to therapeutic modalities they received ; BAE versus conservative management. RESULTS: The success rate for immediate control of hemoptysis was significantly higher in BAE group with 43 cases(100%) among 43 cases compared with 17 cases(77%) among 22 cases in conservative group (p<0.001). The disease control duration was 19.5α8.06 months in BAE group and 18.8α6.06 months in conservative group(p>0.05). The therapeutic response in BAE group was 82%(36/43 cases) and 95%(21/22 cases) in conservative group(p>0.05). According to the amount of hemoptysis, the therapeutic response were seen in 91%(29/32 cases) in less than 100ml and 85%(28/33 cases) in 100~400ml (p>0.05). According to the manifestation of hemoptysis, the therapeutic response in groups of recurrent and nonrecurent were 87%(20/23 cases) and 88%(37/42 cases)(p>0.05). CONCLUSION: The difference of therapeutic response between BAE and conservative group in patients with small amounts of hemoptysis was not found except for immediate control of hemoptysis.
Bronchial Arteries* ; Emergencies ; Hemoptysis* ; Hemorrhage ; Humans ; Lung ; Mortality

Sorafenib is an inhibitor of receptor tyrosine kinases and the rat sarcoma/mitogen-activated protein kinase (RAS/MAPK) pathway that is approved for the treatment of patients with metastatic hepatocellular carcinoma (HCC) and renal cell carcinoma. Sorafenib is known to have various cutaneous adverse effects, including hand-foot reaction, facial and scalp eruption, xerosis, and alopecia1.A 56-year-old man presented with non-painful, nonpruritic psoriasiform lesions that has been present for approximately 1 month (Fig. 1A∼E). Six months prior to presentation, he had been prescribed sorafenib at a daily dosage of 600∼800 mg after diagnosis of HCC with distant metastasis to the lung. A punch biopsy showed psoriasiform dermatitis (Fig. 1F, G). The skin lesions improved gradually after discontinuing sorafenib. However, at 1 month after discontinuation of sorafenib, considering the dose-dependent adverse effect of the medication, the patient resumed sorafenib at 400 mg daily after an oncology consultation. The lesions recurred beginning at 1 week after restarting sorafenib. A clinical diagnosis of sorafenib-associated psoriasiform drug eruption was made. The sorafenib treatment was maintained at 400 mg daily in conjunction with concurrent phototherapy and topical and intralesional corticosteroids for thick erythematous plaques, and intermittent systemic corticosteroid treatment when the cutaneous eruptions flared up.After approximately 2 years of sorafenib treatment, the patient presented with new crusting lesions without any other systemic adverse reactions. Multiple papules and plaques with central hyperkeratotic and crusted papules were present (Fig. 2A∼D). Punch biopsy showed a ‘perforating phenomenon’ (PP) (Fig. 2E∼G). The brownish hyperkeratotic crusts occurred consistently in prolonged psoriasiform plaques and resolved over time (Fig. 2A∼D). The psoriasiform eruptions and delayed-onset PP persisted with continuing sorafenib use (Fig. 2H). Along with a dose-decrease of sorafenib at 400mg daily, he was treated with systemic and topical corticosteroids, intralesional triamcinolone injection and narrowband ultraviolet B therapy. However, the patient showed recurrent cutaneous lesions aggravation upon tapering the dosage of corticosteroid.The psoriasiform lesions improved and then worsened with sorafenib dose change, and the PP featured hyperkeratotic crusts within multiple, long-lasting psoriasiform plaques. This phenomenon might have occurred to eliminate connective tissue or inflammatory material2 and differs from the appearance of transepidermal elimination in previously reported sorafenib-associated acquired perforating dermatosis cases3,4. Transepidermal elimination is a similar process to wound healing2, and considering that our patient had no history of diabetes, renal insufficiency, and trauma, our case might have exhibited the perforating and resolving phenomenon in response to the abnormal psoriasiform drug eruption.The RAS/MAPK cascade that is inhibited by sorafenib could be activated paradoxically; due to its role in antiangiogenesis, this activation results in epidermal disruption. The reduction and suppression of the hepatocyte growth factor-enhanced expression of matrix metalloproteinase induced by sorefenib could influence homeostasis of dermal elastic fibres, resulting in their disruption5. A few cases of psoriasiform drug eruption and PP after administration of sorafenib and other various tyrosine kinase inhibitors have been reported.The PP could represent a manifestation of the resolution of inflammation whereby the psoriasiform hyperplasia and the proliferated dermal tissue might be eliminated via a trans-epidermal route.

OBJECTIVES: The purpose of this study was to compare the microshear bond strength (microSBS) and bonding interfaces of two-step total-etching and self-etching adhesive systems to three etch types of dentin either the acid etched, laser etched or laser and acid etched. MATERIALS AND METHODS: The occlusal dentinal surfaces of thirty human molars were used. They were divided into six groups: group 1, 37% H3PO4 + Single Bond 2 (3M ESPE); group 2, Er:YAG laser (KEY Laser 3, KaVo) + Single Bond 2; group 3, Er:YAG laser + 37% H3PO4 + Single Bond 2; group 4, Clearfil SE Primer + Bond (Kuraray); group 5, Er:YAG laser + Clearfil SE Bond; group 6, Er:YAG laser + Clearfil SE Primer + Bond. The samples were subjected to microSBS testing 24 hr after bonding. Also scanning microscopic evaluations were made on the resin-dentin interfaces of six specimens. RESULTS: The microSBS of group 2 was significantly lower than that of groups 1 and 3 in Single Bond 2 (p < 0.05). There were significant differences among the uSBS of groups 4, 5, and 6 in Clearfil SE Bond (p < 0.05). Very short and slender resin tags were observed in groups 2 and 5. Long and slender resin tags and lateral branches of tags were observed in groups 3 and 6. CONCLUSIONS: Treatment of dentin surface using phosphoric acid or self-etching primer improved the adhesion of Er:YAG lased dentin.
Adhesives ; Bisphenol A-Glycidyl Methacrylate ; Dentin ; Humans ; Molar ; Phosphoric Acids ; Resin Cements

While the frequency of primary carcinoma of the lung has recently increased in adults, it is rare in the pediatric age group. The various adult types of bronchogenic carcinoma such as squamous cell, small cell, large cell, and adenocarcinoma, are extremely rare in children. Twenty to 30 cases of primary bronchogenic carcinoma of the lung in children under 15 years of age have been reported in the English-language literature. We have experienced a small cell bronchogenic carcinoma detected by fiberoptic bronchoscopy with bronchial biopsy in a 14-year-old boy with chief complaint of hemoptysis, lung mass and persistent pneumonitis. To the best of our knowledge, this is the first reported case of primary small cell bronchogenic carcinoma in childhood under 15 years of age. We report this case with a brief review of related literatures.
Adenocarcinoma ; Adolescent ; Adult ; Biopsy ; Bronchoscopy* ; Carcinoma, Bronchogenic* ; Child* ; Hemoptysis ; Humans ; Lung ; Male ; Pneumonia