Jo, Dae-Chuol;Hwang, Jeong-Hyun;Sung, Joo-Kyung;Hwang, Sung-Kyu;Hamm, In-Suk;Park, Yeun-Mook;Byun, Seung-Yul;Kim, Seung-Lae
Journal of Korean Neurosurgical Society
/
v.30
no.12
/
pp.1399-1405
/
2001
Objectives : Gliomatosis cerebri is an uncommon primary brain tumor characterized by diffuse neoplastic proliferation of glial cells, with the preservation of the underlying cytoarchitecture. The aim of this study is to evaluate clinical features, outcome of surgical treatment and adjuvant therapy of gliomatosis cerebri. Methods : Between Jan. 1990 and Dec. 2000, 12 patients were diagnosed with gliomatosis cerebri based on characteristic radiological and histological findings. The patients' age ranged from 18 to 77(mean 44) years and the male to female ratio was 7 : 5. Nine patients underwent decompressive surgery and three, biopsy only. Postoperative radiation therapy was given in all cases except three. In addition to radiation therapy, four patients received chemotherapy. The mean duration of follow-up period was 18.8 months. Results : The most common presenting symptom were seizure and motor weakness. The mean duration of symptom was 5.9 months. There was 5 bilateral lesions and tumor involved corpus callosum in 5, basal ganglia-thalamus in 4, and brain stem in 2. There was no operative mortality but four patients died during the follow-up. The mean survival period for 11 patients was 20.5 months from the time of diagnosis. In univariate analysis, the lesion involving corpus callosum, basal ganglia-thalamus and brain stem correlated significantly with the short length of survival(p<0.05). Also, postoperative radiation as a adjuvant therapy prolonged the patient's survival(p<0.05). Conclusions : In the management of gliomatosis cerebri patients, early detection by MR imaging, active management of increased intracranial pressure, decompressive surgical removal and postoperative adjuvant therapy such as radiation is thought to be a good treatment modality.
This study was carried out to investigate the effects of diethyl maleate(DEM) on the carcinogenesis of forestomach and pyloric glandular stomach in rats caused by N-methyl-N'-nitro-N-nitrosoguanidine(MNNG). A total of 60 male 6-week-old Wistar rats were given twice intragastric injection of MMNG(200mg/kg BW), then were given diets containing 5% NaCl for 3 weeks until 4th week of the experiment. And then the animals of groups of 1 and 2 were placed on diets containing 0.2% DEM for 16 weeks until the end of 20 weeks of the experiment. On the other hand, the animals of groups of 3 and 4 were placed on basal diets for the same periods. The tissues of forestomach and liver of each group were frozen in liquid nitrogen and the activities of quinone reductase(QR) were determined by measurement of the dicoumarol-sensitive reduction of dichloro-indophenol by NADPH at 600nm. All rats were sacrificed at the end of 20 weeks of the experiment. Every animal was fasted for 24 hrs prior to sacrifice. The forestomach was fixed in 10% neutral phosphate buffered formalin for histology and the pyloric gland was fixed in sublimated formalin for immunohistochemistry of pepsinogen 1 altered pyloric gland(PAPG). The final body weight of the group given MNNG and treated with 5% NaCI and DEM was significantly decreased compared with that of the group 4(p<0.05). Food and water consumption rates were not significantly changed. The preneoplastic and neoplastic lesions of the forestomach given MNNG and treated with 5% NaCI and DEM were significantly increased compared to those of the group 4(p<0.0l). The incidence of PAPG in the groups treated with 0.2% DEM was significantly increased compared with that of the group 4(group 1:p<0.01, group 2:p<0.05). The activities of QR of forestomach in the groups treated with 0.2% DEM were significanitly increased compared with those of the group 4(p<0.001), but those of liver were not significant. These results indicate that DEM exert the enhancing effect of forestomach and glandular stomach carcinogenesis in rats pretreated with MNNG and NaCl.
Kim, Kee-Soon;Kim, Kyung-Wook;Lee, Jae-Hoon;Kim, Chang-Jin
Journal of the Korean Association of Oral and Maxillofacial Surgeons
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v.26
no.4
/
pp.355-362
/
2000
Neoplastic growth is characterized by alterations of oncogenes and antioncogenes. The interaction between activated oncogenes and functional deletion of antioncogene appears to be the driving force directing normal cells to uncontrolled growth resulting in tumor. In addition to those genes mentioned, other genes controlling the entry of cells into the cell cycle have recently been implicated in cancer development. The overexpression of the cyclin D1 gene, which has been mapped to 11q13, either by gene rearrangement or amplification has been noted in various malignant tumors. The product of the cyclin D1 gene forms a complex with cyclin-dependent protein kinases(CDK4) that governs a key transition in the cell cycle. The relationships between the overexpression of cyclin D1 assessed by immunihistochemistry and the amplification of the cyclin D1 gene by differential polymerase chain reaction(DPCR) using primers for dopamin D2 receptor gene in 13 cases of squamous cell carcinomas of the oral cavity have been studied. The semiquantitative assay of cyclin D1 amplification has been made by cyclin D1/dopamin D2 receptor(CD/DR) ratio. The results were as follows; 1. In the normal tissue and the tumor, the CD/DR ratios were 0.82 and 1.36 respectively. This implicates 1.65-fold amplification of cyclin D1 gene in tumor compared to that in normal tissue. 2. The tumor tissue which showed overexpression of cyclin D1 by immunohistochemistry revealed 2-fold amplification of cyclin D1 compared to the normal tissue. 3. The tumor tissue which showed mild expression of cyclin D1 by immunihistochemistry revealed 1.7-fold amplification of cyclin D compared to the normal tissue. 4. The cyclin D1 was overexpressed in the tumor tissue at the rate of 38%. Above results suggest that cyclin D1 has close correlation with the development of carcinoma in the oral cavity. But further studies were needed to elucidate the carcinogeneic mechanisms by comparative studies among cyclin D1, pRb and p53.
Kim, Ha-Na;Kim, Jae-Gon;Baik, Byeong-Ju;Han, Ji-Hye;Yang, Yeon-Mi
Journal of the korean academy of Pediatric Dentistry
/
v.34
no.4
/
pp.679-684
/
2007
Odontoma is the most common benign odontogenic tumors, and have been defined as mixed odontogenic tumor composed of epithelial and mesenchymal cells. Odontoma is believed to be hamartomatous rather than neoplastic in nature. The classification by WHO divides odontoma into 2 groups such as complex odontoma and compound odontoma. Compound odontoma comprises dental tissues, resembling the morphology of a tooth and has predilection for the anterior maxilla. In contrast, complex odontoma has unorganized mass, not resembling the normal tooth and has predilection for the posterior mandible. Odontoma is almost asymptomatic, so it is usually found on routine radiographic examination. Common presenting symptom is impacted or unerupted permanent teeth and retained primary teeth, but coexistent odontoma and congenital missing of permanent teeth is a very rare condition. The recommended treatment for an odontoma is conservative surgical excision, with care taken to remove the surrounding soft tissue. This report presents 2 patients with compound odontoma of the mandible who have congenital missing of the permanent teeth.
Park Won Sang;Kim Young Sil;Yoo Nam Jin;Park Cho Hyun;Yoo Jin Young;Lee Youn Soo;Lee Jung Young
Journal of Gastric Cancer
/
v.1
no.1
/
pp.4-9
/
2001
Purpose: The trefoil factor family 1 (TFF1) has a protective effect against gastric mucosal damage induced by nonsteroidal anti-inflammatory drugs or ethanol. In addition, a TFF1 knockout mouse model has exhibited circumferential adenomas with high-grade dysplasia, of which $30\%$ progressed into frankly invasive carcinomas. We tried to determine whether the expression pattern of the TFF1 could be involved in the development of sporadic gastric carcinomas. Materials and Methods: We examined TFF1 expression in a series of 43 sporadic gastric carcinomas and 18 gastric adenomas by immunohistochemistry. Results: Strong positive TFF1 staining was identified primarily in the normal gastric mucosa, mainly in the cytoplasm of the superficial and foveolar epithelium. We found TFF1 expression in $55.8\%$ (24 out of 43) of the gastric carcinomas and in $16.7\%$ (3 out of 18) of the gastric adenomas. Statistically, TFF1 immunoreactivity was significantly higher in diffuse-type ($82.4\%$) than in intestinal-type ($38.5\%$) carcinomas(p=0.0058, Fisher's exact test). Conclusion: Our findings provide sufficient evidence that the expression of TFF1 in gastric cancer may simply disclose gastric-type differentiation of neoplastic cells and provide further support for the existence of at least two pathways of malignant transformation of the gastric mucosa: one via intestinal metaplasia and adenomatous dysplasia, leading to glandular carcinomas with intestinal-type differentiation, and the other via hyperplastic changes or de novo changes, leading to diffuse carcinomas and to a subset of glandular carcinomas displaying gastric-type differentiation.
The nephrotic syndrome that occurs in the absence of renal vein thrombosis, amyloidosis, neoplastic infiltration of the kidneys is an unusual but a well recognized paraneoplastic syndrome. The most frequently reported neoplasms associated with nephrotic syndrome are Hodgkin's disease and various carcinomas. The most common renal lesions are membranous glomerulonephritis(MGN) associated with carcinomas and minimal change lesions associated with Hodgkin's disease. Approximately 40% to 45% of patients clinically manifest the MGN symptoms prior to the diagnosis of the tumor, 40% simultaneously with the tumor and the remaining 15% to 20% following the tumor. Therefore, evaluating the underlying malignancy in patients with MGN is important. Here we report a patient with squamous cell lung cancer, which was detected 12 months after a MGN had been diagnosed, with a review of the relevant literature.
Clinical and cytomorphological studies were carried out in 32 leukotic cattle from Tokachi and Kushiro districts in Hokkaido during the 12 year period from 1969 to 1980. The leukotic cattle were examined :and divided into four types(15 cases of the adult, 11 cases of the thymic, 4 casas of the calf and 2 cases of the skin types). The results obtained were as follows : 1. As for the frequency of the main clinical signs in each type, In the adult type, the main clinical signs (of decreasing order) are as follows: swelling of the superficial lymph nodes>depression and loss of weight>tachycardia>anorekia, anemia of the visible mucous membrane and tachypnea. Those of the thymic type were swelling of the thymus>swelling of the medial iliac lymph nodes> swelling of the superficial lymph nodes>tachypnea. Those of the calf type were swelling of the auperficial lymph nodes>depression and emaciation>tachypnea>anorexia, tachycardia, anemia of the visible mucous membrane and recumbency. Those of the skin type were generalized urticaria-like lesions in skin and swelling of superficial lymph nodes>and depression and loss of weight in the decreasing order of frequency. In addition, large tumor mass in the pelvic cavity and swelling of the medial iliac lymph nodes were detected through rectal palpation in 33.3% and 100% in the adult type cases, respectively. 2. As for the hematological findings, The frequency of occurrence of decreased erythrocyte counts in the decreasing order were as follows : adult>calf>thymic>and skin types. The increase in the total leukocyte count in the order of decreasing frequency were as follows: calf>thymic>adult>and skin types. The increase in the absolute lymphocyte counts was found to be at a low rate, 62.5% of all the cases examined. By contrast, the increase of 5% or more of abnormal lymphocyte rates was observed at a high rate, 96.9% of the total cases. 3. Abnormal lymphocytes were found in all cases examined for lymph nodes biopsied. 4. From the cytomorphological point of view, leukotic cells were divided into 3 types: reticulum cell, lymphoid cell and monocytic cell types. The adult type leukotic cattle were divided with reticulum cell type (66.7%), the lymphoid cell type(22.6%) and monocytic cell type(6.7%). The thymic type was lymphoip cell type(72.7%) and reticulum cell type(27.3%). In the calf type, all were lymphoid cell type while all of the skin type were reticulum cell type only. 5. The leukotic cattle had higher NP frequency in the blood and lymphoid tissue than non-1 eukotic cattle. Especially the adult type had the highest NP frequency. However, it was not recognized that NP were characteristic of leukotic cattle alone. 6. The above findings lead to the conclusion that the most effective diagnostic methods for bovine leukosis are the confirmation of swelling of the superficial and internal lymph nodes and thymus in addition to appearance of abnormal neoplastic cell in the peripheral blood and lymph nodes biopsied.
Ayyildiz, Talat;Dolar, Enver;Ugras, Nesrin;Eminler, Ahmet Tarik;Erturk, Banu;Adim, Saduman Balaban;Yerci, Omer
Asian Pacific Journal of Cancer Prevention
/
v.16
no.1
/
pp.367-372
/
2015
Background: Human adiponectin (ApN), a 30 kDa glycoprotein of 244-amino acids which is predominantly produced by adipocytes, exerts its effects via two receptors, namely adiponectin receptor-1 (adipo-R1) and adiponectin receptor-2 (adipo-R2) with differential binding affinity to globular adiponectin. Adiponectin receptor expression has been studied in several cancer tissues. However, there are no studies of colorectal adenomas which are considered to be precursors for colorectal carcinoma (CRC). Objectives: In the present study, the expression of adipo-R1 and adipo-R2 was investigated immunohistochemically in colorectal adenomas and colorectal carcinoma tissues in an attempt to determine associations with these tumors. Materials and Methods: The study enrolled 50 CRC patients with tumor resection and 82 patients who were diagnosed with adenomatous polyps, classified as negative for neoplasia, low-grade dysplasia (L-GD) or high- grade dysplasia (H-GD). Results: Expression of both adipo-R1 and adipo-R2 was found to be significantly lower in the CRCs than in colorectal adenomas (tubular and tubulovillous, p=0.009 and p<0.001, respectively). Adipo-R1 and adipo-R2 expression was also significantly lower in the CRC group when compared with the groups of patients with low grade dysplasia, high-grade dysplasia or no neoplasia (p=0.012 and p<0.001, respectively). In addition, it was observed that adipo-R2 expression was generally positive in the non-neoplastic group irrespective of the adipo-R2 expression. In the L-GD, H-GD and CRC groups, the adipo-R2 result was positive whenever adipo-R1 result was positive but some patients with negative adipo-R1 had positive adipo-R2 (p<0.001, p=0.004, p<0.001, respectively). Conclusions: This study indicated that ApN may play a role in the progression of colorectal adenomatous polyps to carcinoma through actions on adipo-R1 and adipo-R2 receptors.
Background: Carcinogenesis is a multifaceted intricate cellular mechanism of transformation of the normal functions of a cell into neoplastic alterations. Metastasis may result in failure of conventional treatment and death Hence, research on metastatic suppressors in cancer is a high priority. The metastatic suppressor gene CD82, also known as KAI1, is a member of the transmembrane 4 superfamily which was first identified in carcinoma of prostate. Little work has been done on this gene in breast cancer. Herein, we aimed to determine the gene and protein level expression of CD82/KAI1 in breast cancer and its role as a prognosticator. Materials and Methods: In this study, 83 histologically proven cases of breast cancer and a similar number of controls were included. Patient age ranged from 18-70 years. Quantitative Real Time Polymerase Chain Reaction (q-RT PCR) and immunohistochemistry (IHC) were used to investigate KAI1 expression at gene and protein levels, respectively. Statistical analysis was done to correlate expression of KAI1 and clinicopathological parameters. Results: It was revealed that: (i) KAI1 was remarkably diminished in metastatic vs non metastatic breast cancer both at the gene and the protein levels (P < .05); (ii) KAI1 expression levels were strongly correlated with TNM staging, histological grade and advanced stage (p<0.001) and no association was found with any other studied parameter; (iii) Lastly, a significant correlation was observed between expression of KAI1 and overall median survival of BC patients (P = 0.04). Conclusions: Our results suggest that lack of expression of the KAI1 might indicate a more aggressive form of breast cancer. Loss of KAI1 may be considered a significant prognostic marker in predicting metastatic manifestation. When evaluated along with the clinical and pathological factors, KAI1 expression may be beneficial to tailor aggressive therapeutic strategies for such patients.
Park, Se Jin;Moon, Won Jin;Kim, Wan Seop;Kim, Kyo Sun
Clinical and Experimental Pediatrics
/
v.52
no.5
/
pp.622-626
/
2009
Kikuchi-Fujimoto disease was initially described as a self-limiting histiocytic necrotizing lymphadenitis in Japan in 1972, and is predominantly observed in women under the age of 30 year and in Asian populations. The pathogenesis is still poorly understood but is thought to include infections, and autoimmune and neoplastic diseases. The most common clinical manifestations are fever and painless cervical lymphadenitis. Diagnosis is based on the histopathological findings, characterized by focal necrosis in the paracortical region with abundant karyorrhexis, aggregates of atypical mononuclear cells around the zone of necrosis, absence of neutrophils and plasma cells, and usually intact lymph node capsule. There is no specific therapy for the condition, and aseptic meningitis can occur as one of the complications. Here, we report the case of a patient with Kikuchi-Fujimoto disease accompanied with aseptic meningitis, which may be confused as a case of tuberculous meningitis and lymphadenitis.
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