We intended to evaluate the Young's modulus of trabecular bone and apparent density from Computed Tomography(CT) and Spherical Indentation test and to quantify relation ship between them. The distal femurs(31 age, male, left and right) were prepared for exprimentatin and were embedded with repect to anatomical orientation. Then the specimens were scnned at 1 mm intervals on GE9800 CT scanner and the Hounsfield Units(HU, or CT number) were extracted from each CT image. After scanning, the bones were sectioned with diamond saw, producing 8 mm cubes of trabecular bone(72 eachs) from the metaphyseal region of both distal femur. The cubes were mechanically tested in inferior-superior(IS), anteriorposterior(AP), and medial-lateral(ML) direction with custom-made device, Spherical Indentatin Tester. After testing, the real apparent density of specimens were measured. The results of this study showed that the IS modulus was singificantly greater than both the AP and ML modulus and the AP modulus was also greater than ML modulus significantly(p<0.01). A linear relation ship between HU and real apparent density was found to be significant(R2=0.68) and significant power relationship between the apparent density and the tangent moduli(either by CT or physical measures) was also found.
Diamond ; Elastic Modulus* ; Femur ; Humans* ; Male ; Ships

We report a case of symmei.rical peripheral gangrene in a 22-day-old female associated with dissem-inated intravascular coagulation, which probably occured from septicmia of Enterobacter aerogenes. The skin lesions showed well-defined blackish gangrene surrounded by purpuric patches on the whole fingertips and toes except the loft thumb. Histopathologically, there were epidermal necrosis, diffuse extravasation of RBCs, mild petivascular inflammatory infiltrates and delated and RBC-filled vessels in the dermis. But, there was no definite evidence of vasculitis. In spit,e of aggressive antibictics therapy and other supportive measrres, she died at 39th day after birth.
Dermis ; Disseminated Intravascular Coagulation* ; Enterobacter aerogenes ; Female ; Gangrene* ; Humans ; Necrosis ; Parturition ; Skin ; Thumb ; Toes ; Vasculitis

No abstract available.
Adenocarcinoma*

Higt energy electron beam therapy is a method which is used for the treatment of superficial tumors (less than 5 cm deep) with a characteristically sharp drop-off in dose beyond the tumor. This method offers distinct advantages in dose uniformity and in minimizing the dose to deeper tissues. We report herein three cases of epithelial skin cancer treated with high energy electron beam. The first patient was a 79-year-old male who had primary basal cell carcinoma(BCC) on the right lateral canthus. The second patient was a 67-year-old male who had recurreiit BCC on the right cheek. Both of them received electron beam therapy on the lesion and there were no clinical relapse signs over 1 year. The third patient was a 46-year-old male who had squamous cells, carcinoma on the lower lip. He also received electron beam therapy on the lesion, but it recurred.
Aged ; Carcinoma, Basal Cell ; Carcinoma, Squamous Cell ; Cheek ; Humans ; Lip ; Male ; Middle Aged ; Recurrence ; Skin Neoplasms* ; Skin*

Thyroid dysfunction has heen reported as a side effect of alpha-interferon(IFN) therapy. The incidence of thyroid disorders was 1.2-12%' duripg 1FN therapy for chronic active hepatitis. We experienced a case of hypothyroidism developed after IFN therapy in a 48 year-old man with chronic hepatitis B. Baseline thyroid function before IFN therapy was normal and thyroid auioantibodies were also negative. High tiers ol' antimicrosomal antibody and anti-thyroglobulin antibody appeared and severe hypothyroidism followed at 6 months after starting the IFN therapy.
Hepatitis B, Chronic* ; Hepatitis, Chronic* ; Humans ; Hypothyroidism* ; Incidence ; Interferon-alpha* ; Middle Aged ; Thyroid Gland

No abstract available.

OBJECTIVE: The aim of this study was to evaluate the skeletal and dental changes after intraoral vertical ramus osteotomy (IVRO) with and without presurgical orthodontics by using cone-beam computed tomography (CBCT). METHODS: This retrospective cohort study included 24 patients (mean age, 22.1 years) with skeletal Class III malocclusion who underwent bimaxillary surgery with IVRO. The patients were divided into the preorthodontic orthognathic surgery (POGS) group (n = 12) and conventional surgery (CS) group (n = 12). CBCT images acquired preoperatively, 1 month after surgery, and 1 year after surgery were analyzed to compare the intergroup differences in postoperative three-dimensional movements of the maxillary and mandibular landmarks and the changes in lateral cephalometric variables. RESULTS: Baseline demographics (sex and age) were similar between the two groups (6 men and 6 women in each group). During the postsurgical period, the POGS group showed more significant upward movement of the mandible (p < 0.05) than did the CS group. Neither group showed significant transverse movement of any of the skeletal landmarks. Moreover, none of the dental and skeletal variables showed significant intergroup differences 1 year after surgery. CONCLUSIONS: Compared with CS, POGS with IVRO resulted in significantly different postsurgical skeletal movement in the mandible. Although both groups showed similar skeletal and dental outcomes at 1 year after surgery, upward movement of the mandible during the postsurgical period should be considered to ensure a more reliable outcome after POGS.
Cohort Studies ; Cone-Beam Computed Tomography* ; Demography ; Female ; Humans ; Male ; Malocclusion ; Mandible ; Orthodontics ; Orthognathic Surgery* ; Osteotomy ; Retrospective Studies

BACKGROUND/AIMS: The p53 mutations have been described as the most common genetic alteration during development and progression of malignancy in a wide range of human cancers. Mutant p53 proteins have a prolonged half-life accounting for increased levels of p53 protein frequently detected in tumors. This can induce the production of anti-p53 in the senzn of patients with HCC. We determined the relationship of serum anti-p53 with p53 expression in the liver tissue of chronic liver disease and the correlation of serum anti-p53 with serum alpha- fetoprotein(AFP) in patients with HCC. METHODS: In sera of same patients, we analysed the anti- p53 using ELISA system As controls we tested 50 healthy individuals and 20 patients with chronic hepatitis. Immaiohistochemical study for the presence of mutant p53 was performed on liver tissue from 50 patients with cirrhosis and 30 patients with HCC using monoclonal antibody clone DO-7 and LSAB kit by ABC method. RESULTS: Anti-p53 was positive in 9(30%) of 30 patients with HCC. Among nine patients with positive anti-p53, only two patients had detectable p53 expression in their tumor tissues. Anti-p53 was positive in 5(10%) of 50 patients with liver cirrhosis. The AFP was elevated in 21(70%) of 30 patients with HCC. Among the 9 AFP- negative HCC patients, 4(44.4%) were found to be positive for anti-p53. P53 expression was detectable in 9(30%) of 30 HCCs and 1(3.3%) of RO surrounding non-tumorous cirrhotic tissues. CONCLUSION: Mese findings suggest that anti-p53 was not correlated with the status of p53 expression in liver tissue and serological testing for anti-p53 antibody may be complementary to serum AFP for diagnosing of HCC with normal serum AFP.
Carcinoma, Hepatocellular ; Chronic Disease* ; Clone Cells ; Enzyme-Linked Immunosorbent Assay ; Fibrosis ; Half-Life ; Hepatitis, Chronic ; Humans ; Liver Cirrhosis ; Liver Diseases ; Liver* ; Serologic Tests

Dieulafoy ulcer is an unusual cause of massive, recurrent and frequently fatal gastrointestinal hemorrhage that results from erosion of abnormally large submucosal artery. Although the lesion has been found throughout the gastrointestinal tract, it most commonly occurs in the proximal stomach. Diagnosis depends on the observation of protruding and eroded artery with pulsatile bleeding or adherent thrombus by endoscopy. Even during active bleeding, the endoseopic examination can be negative if intraluminal blood or clots obscure the source of bleeding. If the bleeding has stopped, the small mucosal lesion can be easily overlooked. Unlike peptic ulceration, there is no excavation of the mucosa. A 76-year-old man presented with massive hematemesis and melena. The patient had no previous history of peptic ulcer disease. He did not drink alcohol and use aspirin or NSAIDs. Physical examination revealed a pale, severely diaphoretic male with hypotension and melenic stools. He was found to have hemoglobin 4.0 g/dL and hematocrit 12.7%. We performed emergency endoscopy which showed a pulsatile and bleeding exposed artery without evidence of surrounding ulcerative lesion on the posterior wall of upper body of stomach. Endoscopic ligation using O ring of Stiegman-Goff endoscopic ligator kit was done successfully and the bleeding stopped immediately after ligation. Ten days after treatment, endoscopy showed artificial ulcerative lesion on previous ligated site and no evidence of bleeding. Another endoscopy four days later revealed healing ulcerative lesion. After improvement, the patient was discharged and rebleeding has not occurred to date.
Aged ; Anti-Inflammatory Agents, Non-Steroidal ; Arteries ; Aspirin ; Cytochrome P-450 CYP1A1 ; Diagnosis ; Emergencies ; Endoscopy ; Gastrointestinal Hemorrhage ; Gastrointestinal Tract ; Hematemesis ; Hematocrit ; Hemorrhage ; Humans ; Hypotension ; Ligation* ; Male ; Melena ; Mucous Membrane ; Peptic Ulcer ; Physical Examination ; Stomach ; Thrombosis ; Ulcer*

The main objective of palliative treatment of malignant esophageal stenosis is rapid restoration of passage of fluid and solids. Endoscopic intubation with plastic endoprosthesis may lead to prompt relief of dysphagia and is a effective procedure for the palliative treatment of malignant esophageal stenosis. However, the insertion procedure, which necessitates prior dilatation, is traumatic and associated with considerable risk for perforation and bleeding. Tumor overgrowth, stent migration and stent blockage are frequent complications. Recently, self expanding metal stents woven in the form of tubular mesh made from surgical grade stainless steel alloy filaments(Wallstent), have been developed to offer possible advatage over conventional plastic tubes. The small diameter of introducer system carrying the compressed stent(18Fr) allows a relatively easy insertion procedure that dose not require prior dilatation. This stent is pliable. self-expanding and flexible in the longitudinal axis. We experienced a case of a 74-year-old male with malignant esophageal stenosis in whom self-expanding Wallstent was implanted with successful oral nutrition and much improvement of dysphagia.
Aged ; Alloys ; Axis, Cervical Vertebra ; Deglutition Disorders ; Dilatation ; Esophageal Stenosis* ; Hemorrhage ; Humans ; Intubation ; Male ; Palliative Care* ; Plastics ; Stainless Steel ; Stents