RESULTS 40 operative specimens were taken and examined histopathologically and immunohistochemically for the role of epidermal growth factor in cholesteatoma in 2 groups of patients. One group consisted of 20 pediatric patients, their ages ranged from 8 to 18 years with an average of 13.63±3.53 years. The other group was the adult group and consisted of 20 patients with an age range between 21 up to 48 years and an average age of 30.63+9.08 years. In the pediatric group the males were 65%, while the females were 35%. On the other hand in the adult group, males were 40% and females were 60% Histopathological examination Microscopic examination of the collected specimens revealed strips of stratified squamous epithelium devoid of rete …show more content…
In the perimatrix: EGF positivity in the perimatrix of the pediatric cases was significantly higher than that found in the adult cases ( p< 0.001). EGF positivity in children ranged between 33.0 – 49.0 with a mean of 38.8±4.82. While in adults it ranged between 22.0 – 29.0 with a mean of 25.40±2.11 (Fig 3 A, B). ( (Table 1) Discussion Cholesteatoma is characterized by cellular hyperproliferation. The pathobiologic reason for the observed increase in proliferation of cholesteatoma is not completely understood. Acquired cholesteatoma is more aggressive in children. The reason for the difference in behavior is still unclear .Several studies have sought a physiopathological explanation for this finding .According to Quaranta, the explanation lies in the cholesteatoma perimatrix. Following up this hypothesis, he reported that the number of mononuclear cells infiltration (plasmocytes, lymphocytes, macrophages, granulocytes and giant cells) in the perimatrix to be greater in children than in adults with evidence of enzyme-collagenase activity .[13] Analysis of the expression of MIB1 (a monoclonal antibody marker of cell proliferation) in child and adult cholesteatoma and within the external auditory canal skin was performed ; the proliferation index was normal in the latter, elevated in the adults, and relatively higher in children .[14] We used
There are two extensive classes into which all malignancy types can be isolated: hematological, which are blood-borne diseases and strong tumors, which are the developments depicted previously. Every kind of disease has an extraordinary name, more often than not originating from the range of the body which is fundamentally influenced. For instance, delicate tissue tumors are dangerous developments which happen inside the profound muscle or interfacing tissues all through the body. Melanoma is a sort of skin growth, which influences cells containing skin pigments.
Gallbladder carcinoma (GBCs) is a highly lethal but relatively rare neoplasm of the digestive tract. Most of GBCs are adenocarcinoma (AC), and squamous carcinoma (SC) or adenosquamous carcinoma (ASC) is a rare histopathologic subtype, which accounts for an estimated 1.4 - 10.6% of all GBCs cases [1]. However, the clinicopathologic characteristic and biological feature in SC and ASC of the gallbladder have not yet been fully clarified, due to their lower disease incidence. The previous studies indicated that their tumorigenesis might be induced by the gallbladder mucosa squamous metaplasia, or the pluripotent basal cells from mucous membrane of gallbladder, which may be associated with chronic inflammation of gallstones [2-4]. In addition, other investigation found that SC/ASC of the gallbladder might be result in some carcinogens, including bile anthracene and methyl anthracene, from long-term bacteria or chemical reactions [5]. Moreover, the histologic morphology of SC/ASC is differed from AC, including grater proliferation capacity, high-grade malignancy, and the aggressive invasion of surrounding organs, and less metastasis in regional lymph node and distant organs [6]. Notably, there is no detectable symptom in the
The primary tumor begins in the skin, often from the melanocytes of a pre-existing mole. Once it becomes invasive, it may progress beyond the site of origin to the regional lymph nodes or travel to other organ systems in the body and become systemic in nature.
Many types of neoplasms have been associated with PS, including ovarian, testicular, meningeal, and parotid tumors. Some tumors are rare in the general population under 20 years of age, e.g., ovarian cystadenoma, and monomorphic adenoma of parotid gland. Sometimes multiple tumors have been recorded in same patient. Lipomas are common but other neoplasms occur with low frequency. Most neoplasms originate before 20 years
Results: In a sample of 28, 18 were males and 10 were females. Mean age was 46.7
A noncalcifying lesion that is isodense with brain, round with a smooth outline, and located in the superiolateral bony orbit is typically seen on CT (5). Postcontrast CT scans show no enhancement of cholesterol granulomas (6). On MRI, a cholesterol granuloma show bright signal intensity on both T1- and T2-weighted images without significant enhancement with gadolinium contrast.(7). Signal of high intensity on both T1- and T2- weighted images is seen because of the presence of hemoglobin breakdown product around the cholesterol crystals
The following five broad categories show the tissue classifications of cancer such as carcinoma, sarcoma, lymphoma, leukemia and Myeloma. Carcinoma is a cancer found in body tissue known as epithelial tissue that covers or lines surfaces of organs, glands, or body structures. Many secretory organs and glands affected by carcinoma cancer such as breast that produce milk. Carcinoma cancers are found to be in 80 - 90 % of patient considering all cancer cases. Sarcoma is another malignant tumor rising from connective tissues, such as cartilage, tendons, muscle, fat and bones. Osteosarcoma (7) (bone) and chondrosarcoma (8) (cartilage) are most important examples of sarcoma, these usually occur in young adults.
The asymptomatic nature of the lesion means that the presentation is late in most patients. Local recurrence is a problem with this tumor,
The first case was a three-year-old girl with a white mass and an almost normal hearing in the left ear. Preoperative CT showed a soft tissue shadow anterior medial to the handle. The cholesteatoma was removed after the amputation of the handle. Postoperative evaluation showed no signs suspicious of residual cholesteatoma but a mild hearing loss remained.
Joan Middleton was presented to the emergency department with acute cholecystitis. It is important to understand the patient’s condition to figure out the underlying cause of the situation. Acute cholecystitis is an inflammation of the gallbladder that involves swelling and irritation in the area due to a gallstone blocking the cystic duct (Schaider, Barkin and Barkin, 2015). A gallbladder is an organ that is located below the liver. Its primary function is to store bile, which the body uses to digest fat in the small intestines. When the bile becomes too concentrated, it begins to form insoluble minerals and salt and these deposits are called gallstones. Small gallstones do not cause any problems if they can be flushed down the bile duct and
Cholelithiasis also knows as gallstones occurs in the gallbladder, the function of the gallbladder is to store and concentrate bile. Cholelithiasis occurs when the balance that keeps cholesterol, calcium, bile salts solution is altered. The bile secreted by the liver is supersaturated with cholesterol therefore it come out as a solid. Immobility, pregnancy and inflammation or obstructive lesions of the biliary system decreases bile flow. The stones may stay in the gallbladder or move to the cystic duct or the common bile duct. The main clinical manifestations would be severe pain. The pain can be so severe that is can cause diaphoresis and tachycardia, when the pain slows down the patients may notice a residual tenderness in the right upper
In inflammatory skin diseases like psoriasis, allergic-contact dermatitis and atopic dermatitis, the cellular infiltrate is dominated by lymphocytes [119]. Interestingly, these inflammatory skin diseases also show an increased expression of CCL27 and CCR10 [119]. In a lymphocyte-driven in vivo mouse model induced by epicutaneous ovalbumin exposure, mice showed an up-regulation of CCL27 in inflamed skin [119]. When mice were treated with neutralizing antibodies against Ccl27, histological analysis indicated a suppression of inflammation-induced skin thickening, and a substantially decreased leukocyte recruitment into the skin [119]. In previous experiments, my group could show the progressive loss of CCL27 expression during cutaneous carcinogenesis (actinic keratosis, basal cell carcinoma, squamous cell carcinoma) by activation of the EGFR/Ras signaling pathway [69]. EGFR is the activator for Ras signaling, which is activated in a variety of tumors [69,
On microscopy, acroangiodermatitis is characterized by marked benign proliferation in the papillary and reticular dermis, of pre- existing blood vessels, which are round and regular. The vessels are lined by plump endothelial cells, which are Factor VIII- related antigen and CD34 positive. Kaposi sarcoma, on the other hand, is a malignant tumor characterized by neoplastic spindle cells forming irregular clefts, slit- like spaces and vascular channels,independent of pre- existing vessels, and arranged as lobulated masses deep within the dermis.The lining endothelial and perivascular spindle cells are CD34 positive and Factor VIII- related antigen negative. Endothelial cells in Kaposi sarcoma show atypia unlikeacroangiodermatitis where there is minimal or no atypia.1, 2,
Investigations carried out for diagnosis of Myoepithelioma are histological, immunohistochemical and radiological investigations. Histological features of Myoepithelioma in parotid gland are usually encapsulated. Therefore it is well circumscribed. As mentioned above Myoepithelial cells show four main cell morphologies. From those Spindle cell are the most common type where as clear cell type is the least common. Focal myxoid stroma is particularly abundant in Myoepithelioma. In immunhistochemistry Myoepithelioma cells usually positive for the markers like cytokerins, Vimentin, S-100, Calponin, Smooth muscle actin (SMA), Muscle specific actin (MSA), Smooth muscle myosin, P63 protein, Glial fibrillay acidic protein (GFAP). In radiographic investigation usually carry out CT. It shows enhancing mass lesions with smooth or lobulated margins; located chiefly in the superficial lobe and abutted on the capsule of the gland. They may contain enhancing nodules and nonenhancing areas of linear bands, slit like shaped or of cystic configuration (5)
adolescents with a mean age of 12 1/2, the analysis revealed that 26.6% of the