Ophthalmological Microscopes
Welcome to Ophthalmological Microscopes.Fire Ant Information and Treating Fire Ant Bites
Fire Ant Information and Treating Fire Ant Bites
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Other Articles:
| • | Dangerous Skin Cancer |
| The German Cancer Society has worked out new guidelines for the diagnosis and treatment of malignant melanoma a disease with unfavorable prognosis. Malignant melanoma is responsible for 90% of deaths from skin cancer. The incidence has increased 5-fold within the last 30 years and UV radiation is thought to be an important cause. Caucasian populations are most affected. | |
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| • | Photodynamic Therapy for 101 Early Cancers of the Upper Aerodigestive Tract, the Esophagus, and the Bronchi: A Single-Institution Experience |
| Cancer, when detected at an early stage, has a very good probability of being eradicated by surgery or radiotherapy. However, less aggressive treatments also tend to provide high rates of cure without the side effects of radical therapy. We report on the results of our clinical experience with photodynamic therapy (PDT) for the treatment of early carcinomas in the upper aerodigestive tract, the esophagus, and the tracheobronchial tree. Sixty-four patients with 101 squamous cell carcinomas were treated with three different photosensitizers: hematoporphyrin derivative (HPD), Photofrin II, and tetra (m-hydroxyphenyl)chlorin (mTHPC). Seventy-seven (76%) tumors showed a complete rsponse with no recurrence after a mean follow-up period of 27 months. There was no significant difference in terms of cure rates among the three dyes. However, mTHPC has a stronger phototoxicity and induces a shorter skin photosensitization than either of the other photosensitizers. There were eight major complications: three esophagotracheal fistulae after illumination with red light in the esophagus, two esophageal stenoses following 360° circumferential irradiation, and three bronchial stenoses. Illumination with the less penetrating green light and the use of a 180° or 240° windowed cylindrical light distributor render the risk of complications in the esophagus essentially impossible, without reducing the efficacy of the treatment. Therefore, PDT may be considered as a safe and effective treatment for early carcinomas of the upper aerodigestive tract, the esophagus, and the tracheobronchial tree. | |
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| • | MegaTex Fabric for Cleaning Textured Surfaces |
| Micronova Manufacturing introduces MegaTex, a nonwoven polyamide fabric with a textured thermo-bonded surface. Now incorporated into several of Micronova’s popular mop designs, this fabric is ideal for cleaning heavy soils, structured floors and other rough surfaces in a cleanroom or controlled environment. Sealed bonding points give the non-woven structure increased stability against fibers lifting when mopping or wiping rough or textured surfaces. MegaTex material is available in various sizes as a wipe or sponge and as an optional cover for Micronova’s curtain cleaner, isolator tool, Pa... | |
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| • | HR Best Practices in Latin America Focus of New Book by Prof. Marta Elvira |
 Prof. Marta Elvira of IESE's Department of Managing People in Organizations has co-edited a new book with Anabella Davila, titled "Best Human Resource Practices in Latin America". |
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| • | [Anatomy and Pathology] The Development of the Refractive Status and Ocular Growth in C57BL/6 Mice |
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Optical coherence tomography with a stepper motor appears useful in the measurement of eye growth in the C57BL/6 mouse model, which showed the axial length and corneal curvature were the major factors for the rapidly increased hyperopic in mouse eyes. |
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| • | [Hip] Subsidence of the stem after impaction bone grafting for revision hip replacement using irradiated bone |
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Loss of bone stock is a major problem in revision surgery of the hip. Impaction bone grafting of the femur is frequently used when dealing with deficient bone stock. In this retrospective study a consecutive series of 68 patients (69 hips) who had revision of a hip replacement with femoral impaction grafting were reviewed. Irradiated bone allograft was used in all hips. Radiological measurement of subsidence of the stem, incorporation of the graft and remodelling was carried out and showed incorporation of the graft in 26 of 69 hips (38%). However, there was no evidence of trabecular remodelling. Moderate subsidence of 5 mm to 10 mm occurred in ten hips (14.5%), and massive subsidence of > 10 mm in five (7.2%). The results of this study are less favourable than those of others describing studies of revision of the femoral stem using impaction bone grafting. The absence of the characteristic changes of graft remodelling noted in other series raises the question as to whether irradiated bone graft may be a significant factor influencing the post-operative outcome. |
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By editors@medicalnewstoday.com (MNT Editors) - IESE Business School - University of Navarra - version: v1.5 build A