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Search Results: 1 - 10 of 396 matches for " Fouad Zouaidia "
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A gallbladder tumor revealing metastatic clear cell renal carcinoma: report of case and review of literature
Merieme Ghaouti, Kaoutar Znati, Ahmed Jahid, Fouad Zouaidia, Zakiya Bernoussi, Youssef El Fakir, Najat Mahassini
Diagnostic Pathology , 2013, DOI: 10.1186/1746-1596-8-4
Abstract: The virtual slides’ for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/8956897238238989 webciteMetastatic tumors to the gallbladder are uncommon. The most common metastatic tumors to the gallbladder are metastatic melanomas and metastatic carcinomas from stomach, pancreas, ovary, bile ducts, colon and breast [1]. Metastatic renal cell carcinoma in the gallbladder is extremely rare, with reported frequencies of less than 0.6% in large autopsy reviews [2]. Renal cell carcinoma is a rare tumor accounting for 3% of all malignancies in adults and 85% of primary renal tumors. However, this tumor has a great propensity for metastasizing synchronously or metachronously to various anatomic sites [3]. We report a case of intraluminal polypoid metastasis of clear cell renal cell carcinoma in gallbladder mimicking gallbladder polyp and revealing the renal carcinoma and reviewed the reported 40 cases. The clinico-pathologic features and differential diagnosis are discussed.A 55-year-old woman presented with severe right hypochondrium pain, with weight loss and alteration of her general condition, lasting for 6 months. She showed no urological signs, especially no hematuria, no pain, and no flank mass. She had no past history in particular. Neither physical examination nor laboratory examination revealed any significant findings. Abdominal ultrasonography showed a 2.6 cm diameter intraluminal polypoid hyperechoic mass in the gallbladder. Color Doppler ultrasonography examination demonstrated vessels in the mid-portion of the mass. Computed tomography scan confirmed the presence of a gallbladder tumor that appeared as an enhancing pedunculated tumor within the gallbladder, without thickening of the gallbladder wall. The tumor seemed to be attached to the edge of the liver with no macroscopic extension to the liver parenchyma (Figure 1). Furthermore, TDM scan showed a cortical fleshy nodule of the right kidney, measuring 2.2 cm, with no involvement of
Calcified multilocular thymic cyst associated with thymoma: a case report
Hafsa Elouazzani, Fouad Zouaidia, Ahmed Jahid, Laila Laraqui, Zakiya Bernoussi, Najat Mahassini
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-225
Abstract: A 50-year-old Berber woman from Morocco was admitted with a chronic cough of more than 10 years duration. Her medical history and physical examination were normal. Anterior chest radiography demonstrated a calcified opacity in her right anterior mediastinum. A chest-computed tomogram revealed a round cystic tumor, with significant calcification in her right anterior mediastinum. A surgical exploration was performed. The tumor seemed to be a well-encapsulated and totally calcified lesion, arising from the right lobe of her thymus. It was removed by partial resection of her thymus. Through histology, the calcified tumor exhibited some areas of multilocular fibrous-wall cysts. These cysts were partially lined by small cuboidal cells with severe chronic inflammation and an AB thymoma that arose from the wall of the cyst.Greater attention should be given to multilocular thymic cysts, to exclude the possibility of neoplasm, especially when the cyst wall is thickened.Multilocular thymic cysts are uncommon lesions of the anterior mediastinum. On a regular histopathology examination, they show significant inflammation and fibrosis that can be associated with thymic neoplasm such as thymoma or thymic carcinoma. It is worth noting that an association between thymoma and multilocular thymic cysts has hardly ever been observed. However, the possibility of other cystic thymic lesions, essentially cystic degeneration of thymoma, must always be considered [1].We report an unusual AB thymoma case of a 50-year-old woman in the wall of a calcified multilocular thymic cyst. Our study suggests that difficulties related to the diagnosis have been noted, and we advise that special attention be given to every anterior mediastinal cystic lesion.A 50-year-old Moroccan Berber woman was admitted with a chronic cough that has been going on for more than 10 years, without history of smoking or neoplasm. On admission, her physical examination and routine biochemical tests were within normal limit
Spontaneous rupture of a recurrent hepatic cystadenoma
Hakim Elfadili, Anass Majbar, Fouad Zouaidia, Naoufal Elamrani, Farid Sabbah, Mohamed Raiss, Najat Mahassini, Abdelmalek Hrora, Mohamed Ahallat
World Journal of Hepatology , 2010,
Abstract: Biliary cystadenoma is a rare cystic tumor of the middle aged woman that usually arises in the liver or occasionally in the extrahepatic bile ducts. It has a strong potential for recurrence and for malignant transformation. The lack of specific clinical and biological features hinders diagnosis before surgery. The spontaneous rupture of a hepatobiliary cystadnoma is a very rare and potentially life-threatening complication, with only two reported cases in the English literature. We report a case with spontaneous rupture of a recurrent hepatobiliary cystadenoma in a 32 year-old woman.
A Novel Immunological Technique for Detection of Gramicidin (S) Producing Bacteria  [PDF]
Fouad Houssein Kamel
Green and Sustainable Chemistry (GSC) , 2012, DOI: 10.4236/gsc.2012.22009
Abstract: A serological kit was prepared for the first time to detect bacteria that produce Gramicidin (S). Since, an immunocomplex of antibiotic Gramicidin (S) was prepared followed by immunonization of laboratory animales to obtain specific antibodies in their serum. Serial dilutions of the prepared antibodies were tested directly against samples of bacteria and compared with control samples, which include bacteria that produce Gramicidin (S) (as a positive control) and the bacteria that does not produce Gramicidin (S) (as a negative control) depending slide method after the incubation of bacteria in a suitable media for 3 - 4 hours at 37°C. The prepared kites were evaluated in reference Laboratories and they proved to be highly sensitive (100%), specific (100%), more economic and reliable procedure, in addition to its stability for more than one year. It was the first time to prepare a kit for detection of bacteria which produce Gramicidin (S) directly within few minutes.
Using Genetic Algorithm for Identification of Diabetic Retinal Exudates in Digital Color Images  [PDF]
Romany Fouad Mansour
Journal of Intelligent Learning Systems and Applications (JILSA) , 2012, DOI: 10.4236/jilsa.2012.43019
Abstract: Blood vessels in ophthalmoscope images play an important role in diagnosis of some serious pathology on retinal images. Hence, accurate extraction of vessels is becoming a main topic of this research area. In this paper, a new hybrid approach called the (Genetic algorithm and vertex chain code) for blood vessel detection. And this method uses geometrical parameters of retinal vascular tree for diagnosing of hypertension and identified retinal exudates automatically from color retinal images. The skeletons of the segmented trees are produced by thinning. Three types of landmarks in the skeleton must be detected: terminal points, bifurcation and crossing points, these points are labeled and stored as a chain code. Results of the proposed system can achieve a diagnostic accuracy with 96.0% sensitivity and 98.4% specificity for the identification of images containing any evidence of retinopathy.
Impact of the Human Activities on the Local Climate and Environment of the Suez City in Egypt  [PDF]
Mona Fouad Kaiser
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.57063

Surface temperature and vegetation are the major land cover changes that significantly affect on the thermal environment. In the present study, remote sensing techniques were applied to identify the relationship between anthropogenic activities and the thermal environment in the North Gulf of Suez area. Results have indicated that the urbanization and agricultural expansion have been increased during the last 25 years. Although urban areas increased from 49 km2 in 1987 to 57 km2 in 2012, the urban heat island-range declined from very high and high, to moderate and low. An expansion in cultivated areas from 3 km2 in 1987 to 26 km2 in 2012 was responsible for the decline. The results of this study provided valuable information for understanding the local thermal changes that associate rapid urbanization and expansion of cultivated areas. Consequently, this work recommends that proper planning and management regimes for land use and cover changes associated with rapid urbanization will result in positive impacts on the local climate and environment.

Asymmetry of Sunspot Distribution in KAU Solar Observations during 22 and 23 Solar Cycles  [PDF]
Hassan Mohammad Basurah, Amerah Fouad Dhignah, Fouad Yousef Kamal
International Journal of Astronomy and Astrophysics (IJAA) , 2013, DOI: 10.4236/ijaa.2013.34055

The King Abdul Aziz University (KAU) solar observations of Sunspot on daily passes from 1981 to 2009 are used to investigate the North-South asymmetry variation of the sunspot numbers and its area. We found that the asymmetry dominated to be southern during the last two solar cycles, which evidently exists following a long-term characteristic time scale. Our results were in compliance with the global asymmetry.

A Hierarchical Methodology for Performance Evaluation Based on Data Envelopment Analysis: The Case of Companies’ Competitiveness in an Economy  [PDF]
Mohamed Dia, Fouad Ben Abdelaziz
American Journal of Operations Research (AJOR) , 2011, DOI: 10.4236/ajor.2011.13015
Abstract: In this research, we present a hierarchical Data Envelopment Analysis (DEA) methodology for competitiveness analysis. This methodology takes into account the heterogeneity of the decision making units (DMUs) as well as the diversity of the comparison criteria. We propose to homogenize the DMUs by grouping them hierarchically, which permits a better identification and definition of the criteria in each specific grouping. The methodology proceeds first by the determination of the performances or relative efficiencies, which are in turn aggregated into competitiveness indices in each grouping by the superiority index of [1]; then, the overall competitiveness indices are determined additively along the hierarchical levels. We illustrate the methodology by a competitiveness analysis of several companies belonging to different sectors of activity in an economy, where are suggested ways of improvement for the non-competitive companies within their sectors and within the economy.
Stability of a Delayed SIQRS Model with Temporary Immunity  [PDF]
Laid Chahrazed, Rahmani Fouad Lazhar
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.32034

This paper addresses a time-delayed SIQRS model with a linear incidence rate. Immunity gained by experiencing the disease is temporary; whenever infected, the disease individuals will return to the susceptible class after a fixed period of time. First, the local and global stabilities of the infection-free equilibrium are analyzed, respectively. Second, the endemic equilibrium is formulated in terms of the incidence rate, and locally asymptotic stability. Finally we use the adomian decomposition method is applied to the system epidemiologic. This method yields an analytical solution in terms of convergent infinite power series.

Creep-Recovery and Relaxation Behavior of High Density Polyethylene/Hydroxyapatite Nano Particles for Bone Substitutes: Effects of Gamma Radiation  [PDF]
H. Fouad, Othman Y. Alothman
Journal of Biosciences and Medicines (JBM) , 2014, DOI: 10.4236/jbm.2014.22010

The following article has been retracted due to the fact that it cannot be accepted by the author as a journal publication. The Editorial Board takes a very strong respect to the author’s situation on this matter. This paper published in Journal of Biosciences and Medicines Vol.2 No.2, April 2014, has been removed from this site.

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