No abstract available.

Acute bilateral renal cortical necrosis (BRCN) is a rare cause of renal failure. It has been reported that contrast-enhanced computed tomography provides characteristic findings of BRCN which correlates well with the histopathology making it an important non-invasive diagnostic modality during early phase of BRCN, improving survival rate and prognosis with early diagnosis and treatment. This report presents a case of 73-year old woman with BRCN due to hemolytic uremic syndrome. The patient recovered from anuria and showed complete recovery to normal renal function of her age and serum creatinine level after early initiation of hemodialysis. Furthermore, a normal radiologic finding of kidney was obtained after 52 days from onset of the disease by contrast-enhanced computed tomography. At present, she is preserved within the normal range renal function without renal replacement therapy.
Anuria ; Creatinine ; Early Diagnosis ; Female ; Hemolytic-Uremic Syndrome ; Humans ; Kidney ; Kidney Cortex Necrosis ; Prognosis ; Reference Values ; Renal Dialysis ; Renal Insufficiency ; Survival Rate

The authors had studied the microsurgical anatomy of the choroidal fissure and the operative approaches directed through the fissure. In this study, eight formalin-fixed cadaveric hemisheres were examined. In four hemispheres, the intracranial vessels were perfused with colored silicone latex. The choroidal fissure is divided into three portion : (a) body portion, (b) atrial portion, and (c) temporal portion. Dissection through the body portion of the choroidal fissure exposes the velum interpositum, internal cerebral vein, and third ventricle. The quadrigeminal cistern, pineal region, and posterior part of the ambient cistern can be exposed through the atrial portion of the choroidal fissure. Opening through the temporal portion of the choroidal fissure exposes the structures in the ambient cistern, which include the basal vein, posterior cerebral artery, anterior and lateral posterior choroidal arteries, and hippocampal formation. This study provides valuable knowledges of microsurgical approaches to the third ventricle and basal cistern by demonstrating the neural nd vascular relaionship around the choroidal fissure.
Arteries ; Cadaver ; Cerebral Veins ; Choroid* ; Hippocampus ; Latex ; Posterior Cerebral Artery ; Silicones ; Third Ventricle

No abstract available.
Adenoids* ; Carcinoma, Adenoid Cystic* ; Lacrimal Apparatus*

Various vascularized flaps have been used for oral reconstruction after ablative cancer surgery. Among these, the radial forearm flap, rectus abdominis flap and anterolateral thigh perforator flap are the most popular options. In cases of tongue and mouth floor reconstruction, radial forearm fasciocutaneous flap has been the empirical choice for many years. However, it often carries cosmetic and functional problems on the donor site and limitations in flap size and volume. Considering these drawbacks, the anterolateral thigh perforator flap could be a good alternative. Generally, anterolateral thigh perforator flap has been used for tongue reconstruction due to the favorable flap thickness compared to the radial forearm flap. Furthermore, if a thin flap should be required solely for lining purpose, the flap thickness can be controlled through thinning procedures without circulatory compromise. For large composite tissue defects after cancer ablation surgery, the flap can be designed in a 3-dimensional plane and used for volumetric reconstruction as well as for adequate lining. Between September 2002 and September 2003, the authors used 15 anterolateral thigh perforator flaps for reconstruction of oropharyngeal defects after cancer ablation surgery in 15 patieints and analyzed the clinical data acquired retrospectively. Based on the results, we propose the indications and drawbacks of the anterolateral thigh flap in oropharyngeal reconstruction.
Forearm ; Humans ; Mouth Floor ; Mouth* ; Perforator Flap* ; Rectus Abdominis ; Retrospective Studies ; Thigh* ; Tissue Donors ; Tongue

Synovial sarcomas are rarely occurring, highly malignant tumors of mesenchymal origin. Most cases are confined to the extremities. Fewer than 100 cases of synovial sarcoma have been reported in the head and neck area. We experienced a 24-year-old male patient who first complained of globus sensation. Initial suspension laryngoscopic biopsy specimen of the primary lesion was consistent with hypopharyngeal synovial sarcoma. Surgical excision through lateral pharyngotomy approach and postoperative radiotherapy were performed. We report this rare case with a literature review.
Biopsy ; Extremities ; Head ; Humans ; Hypopharynx* ; Male ; Neck ; Radiotherapy ; Sarcoma, Synovial* ; Sensation ; Young Adult

In rare occasions in which aneurysmal neck clipping is nearly impossible, coating is employed. During the period from 1985 to 1992, 312 patients with aneurysm underwent surgery;aneurysmal neck clipping were performed in 284 cases while coating only in 28. The reasons that coating was required were;wide and broad neck in 13, perforators arising from the neck in 4, neck tearing during dissection in 3, very friable neck in 2, severe adhesion with surrounding structures in 3, and small aneurysm without enough room for clipping in 3. In twenty-three cases, cotton wisp and bioglue were used as coating materials. In another five cases, the aneurysmal wall was reinforced using Surgical or Gelfoam. Patients were followed for 24 months on average of all the patients. Four had last contack. Six died(4 due to rebleeding and 2 due to pneumonia). Fourteen were good and 4 were moderately disabled. There were no rebleeding incidences during first three months' follow-up after coating. We thus concluded that coating an aneurysm offers some protection from rebleeding, particularly when the rebleeding risk period is over.
Aneurysm ; Follow-Up Studies ; Gelatin Sponge, Absorbable ; Humans ; Incidence ; Intracranial Aneurysm* ; Neck

The author reviewed 294 cases of surgically treated cerebral aneurysms during the period from January, 1987 to December, 1992. The results were as follow: The sex ratio between male and female was 1:1.53 and the mean age was 51.3 years. 2) At admission, 220 patients were in relatively good neurologic condition and functional recovery was obtained in 229 patients(78%). 3) The most common site was anterior communicating artery and the number of posterior circulation aneurysms was 12(4%). 4) The incidence of multiple aneurysms was 4% and clinical vasospasm was observed in 19% of the patients. 5) Operative mortality was 8.8% and the prognostic factors were related with age, sex, history of hypertension, amount of SAH, size and site of aneurysm, preoperative neurologic state, clinical vasospasm, and timing of operation.
Aneurysm ; Arteries ; Female ; Humans ; Hypertension ; Incidence ; Intracranial Aneurysm* ; Male ; Mortality ; Sex Ratio

The diffuse form of supravalvar aortic stenosis represents a surgical challenge when the ascending aorta, aortic arch, proximal descending thoracic aorta and arch arteries are involved. It can be treated by a variety of surgical approaches. We report a case of severe diffuse supravalvar aortic stenosis combined with an aortic valve anomaly and occlusion of the right coronary artery ostium in a 14-year-old boy with Williams syndrome. We enlarged the aortic root (Nick's procedure), ascending aorta, aortic arch, proximal descending thoracic aorta, and innominate artery with patches and replaced aortic valve with 19 mm St. Jude valve. Deep hypothermic circulatory arrest and retrograde cerebral perfusion were used during repair of the arch and arch artery.
Adolescent ; Aorta ; Aorta, Thoracic ; Aortic Stenosis, Supravalvular* ; Aortic Valve* ; Arteries ; Brachiocephalic Trunk ; Circulatory Arrest, Deep Hypothermia Induced ; Coronary Vessels ; Humans ; Male ; Perfusion ; Williams Syndrome

OBJECTIVE: The heartbeat classification of the electrocardiogram is important in cardiac disease diagnosis. For detecting QRS complex, conventional detection algorithmhave been designed to detect P, QRS, Twave, first. However, the detection of the P and T wave is difficult because their amplitudes are relatively low, and occasionally they are included in noise. Furthermore the conventionalmulticlass classificationmethodmay have skewed results to themajority class, because of unbalanced data distribution. METHODS: The Hermite model of the higher order statistics is good characterization methods for recognizing morphological QRS complex. We applied three morphological feature extraction methods for detecting QRS complex: higher-order statistics, Hermite basis functions andHermitemodel of the higher order statistics.Hierarchical scheme tackle the unbalanced data distribution problem. We also employed a hierarchical classification method using support vector machines. RESULTS:We compared classification methods with feature extraction methods. As a result, our mean values of sensitivity for hierarchical classification method (75.47%, 76.16% and 81.21%) give better performance than the conventionalmulticlass classificationmethod (46.16%). In addition, theHermitemodel of the higher order statistics gave the best results compared to the higher order statistics and the Hermite basis functions in the hierarchical classification method. CONCLUSION: This research suggests that the Hermite model of the higher order statistics is feasible for heartbeat feature extraction. The hierarchical classification is also feasible for heartbeat classification tasks that have the unbalanced data distribution.
Classification* ; Diagnosis ; Electrocardiography* ; Heart Diseases ; Noise ; Support Vector Machine