No abstract available.
Coronary Artery Disease* ; Coronary Vessels* ; Dobutamine* ; Echocardiography, Stress* ; Humans ; Myocardium* ; Tomography, Emission-Computed, Single-Photon*

BACKGROUND: To compare the diagnostic usefulness of dobutamine stress echocardiography(DSE) and 99mTc-methoxyisobutyl isonitrile SPECT (MIBI SPECT), two studies were performed simultaneously. METHOD: Fifty-six consecutive patients undergoing coronary angiogram and MIBI SPECT for clinical indications without clincal evidence of myocardial infarction were studied prospectively. During the DSE, MIBI was injected at peak stress, and post-stress images of MIBI SPECT were required on hour later. Both echocardiographic and MIBI SPECT images were visually analysed in a blind fashion. RESULTS: On the basis of coronary angiographic findings, the sensitivites of the DSE and MIBI SPECT (n=36) were 89% and 86%, respectively. The specificities of those (n=20) were 90% and 85%, respectively. Among 33 patients without resting perfusion defect on MIBI SPECT, resting regional wall motion abnormalities on DSE were found in only one patient, whereas, resting perfusion defect on MIBI SPECT were found in 9 patients among 41 patients without resting regional wall motion abnormalities on DSE. Among 17 patients who had resting perfusion defects with partial reversibility on MIBI SPECT, resting wall motion abnormalities were present in 11 patients and five of them showed improvement in the regional wall motion during low dose dobutamine infusion. CONCLUSION: Both dobutamine stress echocardiography and MIBI SPECT are useful methods in the detection of the coronary artery disease, however, MIBI SPECT seems to overestimate the regional ischemic myocardium with contractile reserve that can hardly be evaluated with MIBI SPECT.
Coronary Artery Disease* ; Coronary Vessels* ; Dobutamine* ; Echocardiography ; Echocardiography, Stress* ; Humans ; Myocardial Infarction ; Myocardium* ; Perfusion ; Prospective Studies ; Tomography, Emission-Computed, Single-Photon*

No abstract available.
Intussusception* ; Ultrasonography*

No abstract available.
Arteries* ; Humans ; Intracranial Aneurysm* ; Single Parent*

No abstract available.
Gliosarcoma*

Pseudohypoaldosteronism type 1 is a genetic renal tubular disease of salt wasting, presenting in young infants. Tubular unresponsiveness to elevated endogenous and exogenous aldosterone is the suggested pathogenetic mechanism. Oral sodium chloride supplementation relieve the clinical symptoms and electrolyte distrubances. We experienced 2 cases of PHA type 1 in 38-day and 45-day old male infants who were presented with failure to thrive, vomiting and/or dehydration. Laboratory data showed hyponatremia, hyperkalemia, hypochloremia and metabolic acidosis. Renal and adrenal functions were normal. Plasma renin activity and plasma aldosterone concentration were markedly elevated. Under the diagnosis of pseudohypoaldosteronism type 1, oral supplementation of NaCl and/or kayexalate improved the clinical states of the patients.
Acidosis ; Aldosterone ; Dehydration ; Diagnosis ; Failure to Thrive ; Humans ; Hyperkalemia ; Hyponatremia ; Infant ; Male ; Plasma ; Pseudohypoaldosteronism* ; Renin ; Sodium Chloride ; Vomiting

We describe a case of fine needle aspiration cytology of metastatic nasopharyngeal carcinoma in the lymph node of the neck presenting a predominantly spindle cell pattern. A 36 year-old male patient complained of dysesthesia on the right face and a palpable neck mass. Fine needle aspiration was done on the neck mass. Tumor cells were present in syncytial groups or singly with mainly spindle shaped nuclei, vesicular chromatin, thin and regular nuclear membrane, occasional prominent nucleoli and a few foci of cellular cohesiveness. The cytoplasm was scant and pale with ill-defined borders. Mature lymphocytes were present in the background of aspirates and within the tumor cell clusters. Histologically, the tumor of nasopharynx showed several areas of spindle cell pattern. Because the tumor cells showed a predominantly spindle shape with vesicular nuclear chromatin, the differential diagnosis of spindle cell sarcoma or granuloma of epithelioid cells were considered, but the characteristic morphology of the nuclei with vesicular chromatin and prominent nucleoli, and cellular cohesiveness were important in making the diagnosis of nasopharyngeal carcinoma. The possibility of metastatic carcinoma should always be considered in fine needle aspiration cytology of the lymph node in the neck because the incidence of metastatic carcinoma, particularly of the nasopharyngeal carcinoma in the lymph nodes of the neck is relatively high.
Child ; Male ; Female ; Humans ; Diagnosis, Differential ; Incidence ; Neoplasm Metastasis

We present a family of FSP with review of literatures. Seeligmuller (1876) and Strumpell (1880) were the first to describe familial case of spastic paraplegia characterized by progressive weakness and spasticity of the lower limbs with little or no involvement of the upper extremities. This syndrome is heterogenous in inheritance, age of onset, severity and associated signs. A pure type without complications has been named "Strumpell's FSP". We have recently experienced a case of 17 years old male who had bilateral weakness and stiffness of lower extremities, and gait disturbance with family history. Differential diagnosis, particularly with familial amyotrophic lateral sclerosis, is discussed.
Adolescent ; Age of Onset ; Amyotrophic Lateral Sclerosis ; Diagnosis, Differential ; Gait ; Humans ; Lower Extremity ; Male ; Muscle Spasticity* ; Paraplegia* ; Upper Extremity ; Wills

Primary malignancy of the thymus gland in myasthenia gravis remains rare, especially metastasis of the malignancy to a distant organ. We have presented a case of myasthenia gravis with invasive thymoma and its meatastasis to the diaphragm. The literature concerned with this aspect is reviewed.
Diaphragm ; Humans ; Myasthenia Gravis ; Neoplasm Metastasis* ; Thymoma* ; Thymus Gland

A finite element analysis has been utilized to analyze stress and strain fields and design a new configuration in orthopedics and implant dentistry. Load transfer and stress analysis at implant bone interface are important factors from treatment planning to long term success. Bone configuration and quality are different according to anatomy of expecting implantation site. The purpose of this study was to compare the stress distribution in maxilla and mandible according to implant length and bone engagement types. A three dimensional axi-symmetric implant model(Nobel Biocare, Gothenburg, Sweden) with surrounding cortical and cancellous bone were designed to analyzed the effects of bone engagement and implant length on stress distribution ANSYS 5.5 finite element program was utilized as an interpreting tool. Three cases of unicortical anchorage model with 7, 10, 13mm length and four cases of bicortical anchorage model with 5, 7, 10 and 13mm lenght were compared both maxillary and mandibular single implant situatiion. Within the limits of study, following conclusions were drawn. 1. There is difference in stress distribution according to cortical and cancellous bone thickness and shape. 2. Maximum stress was shown at the top of cortical bone area regardless of bone engagement types. 3. Bicortical engagement showed less stress accumulation when compared to unicortical case overall. 4. Longer the implant fixture length, less the stress on cortical bone area, however there is no difference in mandibular bicortical engagement case.
Dentistry ; Finite Element Analysis* ; Mandible ; Maxilla ; Orthopedics