Adamantinoma of the Right Tibia Case Study

Adamantinoma of the Right Tibia Case Study INTRODUCTION: Adamantinoma is low grade malignant tumor of fibroblast origin. Also called as primary epidermoid carcinoma of bone, malignant angioblastoma or epithelial tumor of bone. It was first described by Fischer in 1913. 1 It represents less than 0.4% of all malignant bone tumors. 2 The exact origin of adamantinoma is unknown, the classic variant is composed of epithelial cells and osteofibrous components. It is more prevalent in men than in women, ratio being 5:4. The common age of presentation is in the second decade, though it can vary greatly between the second to fifth decades. 3 The common site of occurrence is the ramus of the mandible. The other uncommon locations include shaft of long bones (97%), mid-shaft of tibia (80%-85%). 4 Other rare locations includes the humerus, ulna, femur, fibula and radius but ribs, spine, metatarsal and carpal bones. 5 The characteristic features of adamantinoma is slow, gradual development with high chances of local recurrences and also metastases to lungs. 6 In this case study, we have presented a rare histological acanthomatous variant of adamantinoma of the right tibia with metastases to the right inguinal region. CASE REPORT: A 45 year old male patient presented with history of pain in right leg since 3-4 months, insidious onset, gradually progressive, aggravated on exercise, relieved on rest and medication. Later patient had no relief on medication. There was no history of trauma or fall preceeding to onset of symptoms. The patient also complained of swelling in the right groin since 1 month, without pain. On examination, the patient was stable. Local examination showed, a swelling of about 5X3cm in the upper end right leg, tender, well defined, hard in consistency, smooth surface, involving the right knee joint line. There was restriction of movement, but range of movements was present. Examination of right inguinal region revealed a 7X6cm firm, non-matted mass, immobile, non-tender, non-reducible, non -pulsatile mass. Local examination of penis, scrotum, anal canal, hernia orifices was normal. Baseline investigations were done, all the haematological parameters were normal, ultrasound abdomen and chest radiograph was normal. Plain radiograph of right tibia showed large central lytic lesion with sclerotic margins, involving the upper end and shaft of tibia without involvement of right knee joint. Supra-patellar amputation of right leg with right inguinal and right external iliac nodal dissection was done. Histopathological examination of the mass was done. The reported was suggestive of acanthomatous adamantionoma. The features are as described, central area of squamous cell nests which were well differentiated with keratinization surrounded by a rim of myxoid cells. Further immunohistochemistry(IHC) study was done to confirm the diagnosis. IHC was also consistent with the diagnosis and confirmed the diagnosis. Positivity was found for cytokeratin(CK), EMA, CK-19, CK-5, CK-6, P-63 , and Ki-67 and vimentin. Also metastases to right inguinal lymph node was confirmed. DISCUSSION: The first bone tumor with epithelial characteristic was reported by Maier in 1900, later in 1913 Fischer termed it as adamantinoma. It is more common in men than in women. The age of presentation varies between the second to fifth decade. The uncommon sites includes the shaft of long bones(97%), of which the mid-shaft of tibia being the most common site(80-85%). The symptoms at presentation include pain with localised swelling. Swelling is the most common symptom. Pain may be present due to history of repetitive trauma associated with adamantinoma. 7 Adamantinoma is low grade malignant tumor, and can metastasize to loco-regional nodal areas and to lungs at presentation. The patient in the case report was also a middle aged man in the fifth decade with pain and swelling in the right tibia since 3-4 months and swelling in the right groin.

Choose a topic from your personal knowledge and experience Essay

Choose a topic from your personal knowledge and experience - Essay Example The most important thing when learning English as a second language is to learn to be a good listener. Effective listening is very important since it helps you to understand some of the words and concepts that may appear challenging. I have realised that when you carefully listen to others, you may be in a position to quickly understand what they are trying to say. When you listen carefully, you are also able to ask questions to the speaker so that he or she may explain the points that you may require clarification. I have also observed that if you are a good listener, mutual understanding is likely to be created with the person you are communicating with. If there is mutual understanding between the two parties involved, it is quite easy to exchange information. From my own experience, I have observed my level of understanding of different terms has significantly improved following the adoption of this strategy. I can now easily understand the main subject of discussion without aski ng the speaker to repeat what he or she has said. The other important point I must emphasize in this particular case is that you should not shun the way of behaviour of the people in the host country if you are an international student. This can only create hostility and it is counterproductive. Therefore, I have noted that you must be as cooperative as much as possible in order to avoid conflicts of interest. If you treat other people as important, there are likely chances of learning quickly their culture as well as language. From my own perspective, I have rapidly developed cordial relationships with other students than I ever anticipated. When you are learning English as a second language, I have realised that learning by observing other people is very effective in as far as acquiring new knowledge is concerned. One important thing I

Sales and Operational Planning in Supply Chain Management Research Paper

Sales and Operational Planning in Supply Chain Management - Research Paper Example This is a scenario that may be inevitable for Stone Horse Supply Company. There is even the possibility of legal challenges as to which business ventured into a particular market first in order to provide a service. If the company expanded or grew its portfolio it could be taken as an entry into a field or market where they are not supposed to be in. Despite this, it is highly recommended that the company’s sales and operational planning transcends its boundaries. The only thing it has to do is to balance the fact that it is a commercial enterprise with the usual commercial pressures, and its current relationships are very crucial (Jacobs, 2011). As a result of this, there is a need to be continuously aware of points and blends of likely conflict. In short, Stone Horse Supply Company only has to know when and how it should expand and offer its services, products and skills. Sales and operational planning is composed of and stretch across many boundaries (Weele, 2010). In order to effectively manage it, managers, policy makers of Stone Horse Supply Company need to understand their different reaches and the organizational implications underlying these reaches or boundaries. The company needs to carry out a clear definition of its boundaries as an initial step in managing its sales and operational planning and identifying its spheres of concern, influence, control and constraints. A lot of boundaries exist and can be determined. Each and every boundary can be presented through many layers of analysis. Sales and operational planning that transcends the company’s boundaries is known to be very responsive to the demands of customers and also has the capacity and capability to quickly match and keep up with demand through mass customization or postponement (Crandall, 2010). As a result of this, it is very agile (especially at the downstream end) in terms of responding to customer demands. By building and managing a sales and

Using Biometrics for Security :: Technology Safety Essays

Using Biometrics for Security Today the protection of everything has become an important issue that affects everyone. Whether it’s protecting a cashier’s cash drawer or preventing a suicide bomber onto an aircraft. Either way there is going to be an increase and change in security. The advancement in the technology of computers has made it easier for people to get information. Today, a person can log onto the internet and view information on anything and everything. If an average person can do that then how secure is the internet? How much security should be placed on a computer or a website? For the average person, a password, personal identification number, or keys allow them to view information that only they can access. This form of security isn’t of high-quality because it can be forged. Over the years, many people have developed security systems that can actually authenticate a person. This report will be looking at these advancements as well as my thoughts of them. The improvement in security was developed on the bases of biometrics. Biometrics refers to the authentication techniques that rely on measurable characteristics that can be automatically checked. [1] Biometric techniques are divided into physiological and behavioral characteristics. Physiological characteristics include: the finger, palm, the face, and the retina and iris of the eye. Behavioral characteristics include: voiceprints, keystrokes and handwritten signatures. Fingerprints is the most commonly use of biometric today. It works great for the population between the ages of 18 and 40 because their prints are haven’t been effective by normal aging. In my view there are a few downfalls. The first on is due to aging. As we go through life our body changes. We lose fat on a fingers causing the image to become more difficult to read. The second one is due to the type of employment. A construction worker or a carpenter work with their hands all the time. Many of them get injuries on their hands causing a scar to alter the fingerprint. My final downfall is a bit distorted. A finger can be cut off. There are many people that will go to any means to get what they want. This includes cutting off a person finger and carrying it around till they get to what they need to access. Palm and hand scanner are less effective and more expensive then fingerprint scanners.

Assignment The Solution

In this function is the population at time O, P is the population after time t, and k is called the exponential growth rate. For this problem about the population of rats, represents the rats population at O, P is the rats population after time t 7 days and 14 for 2 weeks as seen in and and k is the rats exponential growth rate which is represented by the 13. 6% or the decimal O. 136. Using this equation we calculate that in 1 week the rats have grown from 100 rats to 259 rats and in 2 weeks the rats have grown from 100 rats to 671 rats. The sat part of this problem asks us to find the doubling time of the population of the rats.The algebraic solution for this is represented by solving for T. The equation for this is and now I will tell you what it substitutes. We substitute 200 for and the rest of the equation uses the natural logarithm to solve for doubling time of the rats population. Some of the topics in this course this problem relates to are natural logarithms, exponential fun ctions, and graphing. These functions are applicable to the business, science, psychology and sociology fields. The Intersect method for this problem is used in the technology field. The answer from this problem states the population of rats will double in 2 weeks.Method The method of problem solving that I use is, I find another problem like this one and match the numbers up to the equation of the other problem, solve this problem parallel to the other problem following the guided steps, essentially multi-tasking, solving two problems at the same time. I call this method â€Å"Killing two birds with one stone. † Once I have worked both problems to their simplified form, I input this information into a calculator to arrive at y answer. The variety Of ways to solve this problem is through the use Of a calculator and the growth / decay formula.My rationale for selecting the method adopted is because like to keep things simple. Pre;calculus is complicated as it is. It would be e asy for me to overprint solving problems if I did not keep it simple. Also tend to not fully grasp the concepts unless solve the problems slowly and double checking my work. Explanation The easiest way can explain solving this problem to someone would be to patiently go through the problem step-by-step with them pausing along the ay making sure they are grasping the concepts of solving the problem.I would start by reading the word problem thoroughly, taking note of the numbers in the word problem. I would then use the exponential growth rate formula matching the numbers up to the equation and begin to solve the problem using P. E. M. D. A. S. It is a staple to any math problem. Certain rules apply that cannot be ignored. Will conclude this problem with assisting them through the doubling formula of to find its solution.Conclusion The solution to the population of rat's problem clearly states that using the exponential growth function, the rat's population after one week is 259 rats and the population doubles after two weeks giving us 671 rats. If my calculations are correct the 5 for T in the solution represents a 5 year mark? This solution Was derived by dividing the natural logarithm of Len by the percentage of 0. 136 in decimal form. Given this information it is possible to state that the rats population will double in size from 671 in two weeks to another greater number in 5 years. I will firmly agree that this solution is correct.

The Atomic Bomb - 1580 Words

Now, let’s go back to the not forgotten â€Å"four letter word†. â€Å"Gold† was the word our predecessors chose. With everything that comes with it including a bonus; an extra letter that figuratively speaking changed the spelling of gold to â€Å"Money†. Its weight, its vigor, had a big influence, and yes, its domination found the acceptance by the most who dedicated their lives to it. For the choice that was made we were hijacked. We see it and we pay the bills of their residual effects through wars, the atomic bomb, violence, crime, corruption, climate, nature, food, health, multinationals, and above all, our state of mind, including the psyche. Following our precursor s mistakes, we have created a false reality. Speeding as we are doing, we have no†¦show more content†¦The temporary victory, as the adjective denotes, won t last. To the contrary, the eternal one that can be achieved in spirituality has no monetary value. It doesn t require anything more than focusing on it with trust, in humbleness, and being appreciative for what we have, whether it is good or bad. This life’s status is of minor importance to the eternal. If we trust and say thanks sincerely, in any form we like, when we feel like it, the course of life will change in our favor. The Great Spirit is not vain, doesn t require idolatry, but unconditional love for the whole and respect sustained by the belief in the Higher Realms. Such a felt belief, when it is present has to be ever-present. Above all, never doubt it. Furthermore, if doubt exists, it should be truly examined and compared, then let flow into humble acceptance. This way to believe will allow us to fly spiritually and see the magnificence that has always been present for us, as part of us. Let s get back to Earth and our mistakes. We inherited a form of violence known as war. â€Å"The boy woke up in the middle of a revealing dream, picked up his guitar and begun to sing ‘We have to stop these men with the narrow mind, so afraid of themselves are seeking and living endless fights. We have to remind them that war, it’s a mistake of the past, we know that is their moneymaking we don’t need it, we don’t want that on our expenses, it will last.’†¦Ã¢â‚¬  From: â€Å"A Mistake of the Past†  © 1979 War will

African American Stereotypes in the Film Industry - 982 Words

African-Americans have long endured demeaning and misrepresentative images within the film industry and American society as a whole. In the early 20th century, an abundance of films depicted an idealized vision of life in the south, in which blacks were happily subservient to their role as the property of their white masters. The roles of black characters were also portrayed by white actors in blackface. Blackface was a form of theatrical makeup used to represent an image of a black person and was employed as a means to portray negative images of African-Americans and to showcase them in an inferior light. Fortunately, the use of blackface dwindled as it was considered extremely offensive and derogatory, although the practice still remains in use today though very limited due to the rightful stigma surrounding it. However, the negative portrayals of African-Americans in film did not end there and continued for a long time after. African-Americans were still confined to roles which of ten portrayed blacks as incompetent, child-like, hyper-sexualized, and criminal. Even the more positive roles offered to African-Americans provided limited options and reinforced the belief that the proper social position for African-Americans was that of a servant who was devoted to his or her white masters and to upholding that particular social order. These roles were often as loyal servants, mammies, and butlers - some even found great success and prominence in these roles, most notablyShow MoreRelatedThe Stereotypes Of African Americans1347 Words   |  6 PagesAfrican Americans have been oppressed ever since slavery was abolished and it seems to be a never-ending cycle. White Americans oppressed the black population because they needed a way to remind everyone of their so-called supremacy. They did this through many different ways but the most common were by theatrical performances. 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