No abstract available.
Thyroid Function Tests* ; Thyroid Gland*

No abstract available.
Diagnosis* ; Thorax*

No abstract available.
Immunoenzyme Techniques* ; Mycobacterium tuberculosis* ; Mycobacterium*

PURPOSE: We evaluated internal and marginal features of solitary pulmonary nodules on CT to differentiate between benign and malignant pulmonary nodules. Materials and Uethods:CT findings of 43 cases with solitary pulmonary nodule were reviewed, restrospectively. Independent T-test between benign and malignant nodules was used. RESULTS: Twenty-one cases were proved as benign nodules and 22 cases as malignant. CT air bronchogram was observed more frequently in the malignant lesions(36.4%) than in the benign ones (p=0.01). ,Air bubble shadow was observed in 5 cases of benign nodule, whereas none of the malignant lesions revealed it. Internal homogeneity or central low density was not different between the two groups. Cavitation was observed in 3 cases of tuberculoma and in 1 case of adenocarcinoma. Calcification was observed in 7 cases of benign and in 2 cases of malignant lesions. Differences in these two features were not statistically significant Mean size of malignant nodules was 3.23cm, and was larger than 2.16cm of benign nodules (p=0.002). Margin of benign nodules was more smooth (42.9%) than that of malignant nodules (p=0.01), and malignant nodules showed more Iobulated contour (90.9%) than benign nodules (42.9%) (p=0.00). The incidence of spiculation was not significantly different (benign 85.7% vs malignant 86.4%). Statistically, pleural tail and satellite lesions were not significantly different between two groups. CONCLUSION: Lobulated margin and CT air bronchogram are the most suggestive findings of malignant pulmonary noule on chest CT.
Adenocarcinoma ; Incidence ; Solitary Pulmonary Nodule* ; Tomography, X-Ray Computed ; Tuberculoma

Regulation of respiration differs significantly between wakefulness and sleep. Respiration during wakefulness is influenced by not only automatic control but also voluntary and behavioral control. Sleep is associated with definite changes in respiratory function. With the onset of sleep, voluntary control of ventilation that overrides automatic control during wakefulness becomes terminated. Also ventilatory response to various stimuli including hypoxemia and hypercapnia is decreased. With these reasons respiration during sleep becomes fragile and unstable so that marked hypoxemia can be happened in patients with lung disease especially during REM sleep. Obstructive sleep apnea may also be developed if upper airway resistance is increased in addition to these blunted ventilatory responses.
Airway Resistance ; Anoxia ; Humans ; Hypercapnia ; Lung Diseases ; Respiration ; Sleep Apnea, Obstructive ; Sleep, REM ; Ventilation ; Wakefulness

No Abstract Available.
Fatigue* ; Humans ; Male*

BACKGROUND: Cell-cell adhesion in tissue is mainly regulated by hornotypic interaction of cadherin molecules, which are anchored to the cytoskeleton via cytoplasmic proteins, including a-and / 3-catenin. Loss of E-cadherin and catenin have been attributed a pathogenetic role in tumor invasion. METHODS: We examined the expression of E-cadherin and a-catenin in human thyroid carcinoma by immunohistochemistry. RESULTS: Normal tissue strongly expressed E-cadherin and a-catenin. However, E-cadherin and a-catenin expression were frequently reduced in thyroid carcinoma (E-cadherin: 62.5%, a-catenin: 81.3%). But the expression of E-cadherin and a-catenin in tumors with metastatic spreading were not different with tumors without metastasis. CONCLUSION: These results suggest that reduced E-eadherin and a-catenin expression may be a sensitive marker for disturbance in the adhesive function of the junctional complex, but further evaluation with more cases is needed for confirmation of the result of the same degree of expression in tumors with metastasis.
Adhesives ; Cadherins* ; Cytoplasm ; Cytoskeleton ; Humans ; Immunohistochemistry ; Neoplasm Metastasis ; Thyroid Gland* ; Thyroid Neoplasms*

PURPOSE: We studied CT findings of bronchioloalveolar carcinoma that manifestated varied clinical and radiologic characteristics. MATERIALS & METHODS: We studied presenting radiographic patterns and their characteristics and secondary findings of histologically proven 30 cases of bronchioloalveolar carcinomas on chest CT scan. RESULTS: Bronchioloalveolar carcinoma appeared radiologically as a solitary nodule(19 cases), consolidation (7 cases), and multinodules(4 cases). A solitary nodular type shows irregular or spiculated borders, peripheral or subpleural location, heterogenous density, pleural tags, pseudocavitation, and sometimes rim-enhancement of mass. A consolidation type shows air-brochogram, pseudocavitation and CT anglogram within homogenous low attenuated consolidated lung. Hilar and mediastinal lymphadenopathy as secondary findings of bronchioloalveolar carcioma appeared frequently(43.3%). Even in a solitary nodular form, hilar & mediastinal lymphadenopathy was noted in 36.8% and follow-up study in 6 cases showed lung-to-lung metastasis with 14.7 months in mean metastasis duration. CONCLUSION: It is difficulty in diagnosis of bronchioloalveolar carcioma with clinical or plain radiographic features alone because of theis variability. We found that CT scan can help the diagnosis of this tumor. We also found out that a solitary form of bronchioloalveolar carcioma as well as diffuse form does not have a good prognosis.
Adenocarcinoma, Bronchiolo-Alveolar* ; Diagnosis ; Follow-Up Studies ; Lung ; Lymphatic Diseases ; Neoplasm Metastasis ; Prognosis ; Tomography, X-Ray Computed

BACKGROUND: We have previously demonstrated the isoflurane and halothane may be detrimental to in vitro fertilization of mouse oocytes in high concentrations. The aim of this study is to compare the toxic effects of volatile anesthetics on mouse embryos using in vitro growth model of two cell mouse embryos. METHODS: Mouse two-cell embryos exposed to three volatile anesthetics, enflurane(0.5 mM; 1.5 mM), isoflurane(0.26 mM; 0.78 mM) and halothane(0.24 mM; 0.72 mM). Mouse two-cell embryos unexposed to any drugs were included as controls. RESULTS: The percentages of two-cell mouse embryos developed over morula stages on the third day after exposure of high concentrations of isoflurane and halothane decreased significantly compared with controls. The rates of embryos arrested at 2-8 cell stage in these groups were significantly higher than that of controls. There were no significant differences in these rates between enflurane group, isofiurane and halothane group of lower concentrations and controls. The hatching and/or hatched blastocysts development were significantly lower in isoflurane and halothane group than in controls. No significant differences in the hatching rate of blastocyst developed were observed among groups. CONCLUSIONS: Our data show that isoflurane and halothane in high concentrations have harm effects of the in vitro growth of two cell mouse embryos.
Anesthesia* ; Anesthetics ; Animals ; Blastocyst ; Embryonic Development ; Embryonic Structures ; Enflurane ; Female ; Fertilization in Vitro ; Halothane ; Isoflurane ; Mice ; Morula ; Oocytes ; Pregnancy

BACKGROUND: We have previously demonstrated the isoflurane and halothane may be detrimental to in vitro fertilization of mouse oocytes in high concentrations. The aim of this study is to compare the toxic effects of volatile anesthetics on mouse embryos using in vitro growth model of two cell mouse embryos. METHODS: Mouse two-cell embryos exposed to three volatile anesthetics, enflurane(0.5 mM; 1.5 mM), isoflurane(0.26 mM; 0.78 mM) and halothane(0.24 mM; 0.72 mM). Mouse two-cell embryos unexposed to any drugs were included as controls. RESULTS: The percentages of two-cell mouse embryos developed over morula stages on the third day after exposure of high concentrations of isoflurane and halothane decreased significantly compared with controls. The rates of embryos arrested at 2-8 cell stage in these groups were significantly higher than that of controls. There were no significant differences in these rates between enflurane group, isofiurane and halothane group of lower concentrations and controls. The hatching and/or hatched blastocysts development were significantly lower in isoflurane and halothane group than in controls. No significant differences in the hatching rate of blastocyst developed were observed among groups. CONCLUSIONS: Our data show that isoflurane and halothane in high concentrations have harm effects of the in vitro growth of two cell mouse embryos.
Anesthesia* ; Anesthetics ; Animals ; Blastocyst ; Embryonic Development ; Embryonic Structures ; Enflurane ; Female ; Fertilization in Vitro ; Halothane ; Isoflurane ; Mice ; Morula ; Oocytes ; Pregnancy