The model of lymphocyte differentiation described for Lukes-Collins' classification of non-Hodgkin's lymphoma is related particularly to morphological alterations of nuclei of follicular center lymphocytes by antigenic stimulation. The authors carried out ultrastructural and morphometric studies to investigate morphological alterations during lymphocyte transformation on the nuclear profiles of follicular center, parafollicular and mantle zone lymphocytes in ten tonsillectomy cases of chronic hypertrophic tonsillitis. The nuclear parameters measured included nuclear area, contour index, frequency invagination and cleft, depth of invagination and nuclear diameters. Follicular centers contained a mixed population of lymphocytes consisting of untransformed (type 1), partially transformed (type 2) and fully transformed (type 3) lymphocytes. During lymphocyte transformation in both follicular, and parafollicular and mantle zones, the nuclei had a gradual and progressive increase in size. The nuclear contour index of type 2 nuclei of both follicular and parafollicular and mantle zones tended to be higher than those of type 1 and 3, indicating a greater degree of irregularity and variability of nuclear profiles. Invaginated and cleaved lymphocytes were not confined to me transformed lymphocytes. A considerable portion of lymphocytes had invaginations and clefts in parafollicular and mantle zone as well as follicular center. No difference on the depth of invagination was noted in type 1, type 2 and type 3 lymphocytes. The results indicate that some promise of the Lukes-Collins conepts of follicular center cells and the process of lymphocyte transformation in follicular centers may be necessary to revise

Chin ; Female ; Humans ; Lip ; Male ; Osteotomy ; Prognathism ; Recurrence ; Witchcraft

No abstract available.
Matrix Metalloproteinase 9

To evaluate the characteristics of MR findings in osteomyelitis, retrospective MR image interpretations were made in 18 patients with osteomyelitis proved either either by surgery(n=17) or clinical course(n=1). Osteomyelitis was acute in five patients, subacute in five, chronic in seven, and healed in one. Area of active inflammation had low marrow marrow signal intensity on T1-weighted images, high signal intensity on T2-weighted images inhomogeneously. It has been said that morrphologic characteristics of osteomyelitis in MR improved the accuracy in diagnosis of osteomyelitis and that gadolinium enhanced MR image further assisted in the planning of surgery. Out study was performed to observe the signal intensity change or morphologic change of bone marrow, cortex, periosteal reaction, and soft tissue which are specific for osteomyelitis. Multiple inhomogensous round marrow lesions were noted with central high signal intensity and peripheral low signal intensity on T1-weighted images, and central low signal intensity and peripheral high signal intensity on T2 weighted images in two patients. Intra and extraosseous abscesses showed rim enhancement after gadopentetate dimeglumine injectron. The signal intensity of the relatively higher than the internal area of the abscess on T1-weighted images. Cortical bone destruction showed high signal intensities T2-weighted images with destruction patterns of fine radial, circumferential, vertical or wedge shaped. MR imaging, by displaying specific signal intensities and morphological changes of bone marrow, cortex, periosteal reaction and soft tissue, would be an aid in early diagnosis and in planning for appropriate conservative and operative therapeutic procedures for osteomyelitis.
Abscess ; Bone Marrow ; Diagnosis ; Early Diagnosis ; Extremities* ; Gadolinium ; Gadolinium DTPA ; Humans ; Inflammation ; Magnetic Resonance Imaging* ; Osteomyelitis* ; Retrospective Studies

Functional dyspepsia is defined as the presence of the symptoms that originate from the gastroduodenal area, without evidence of any organic, systemic, or metabolic disease that could explain these symptoms. The pathophysiology of functional dyspepsia includes chronic duodenal inflammation, Helicobacter pylori, excessive gastric acid secretion, dietary factors, and psychosocial, genetic, and environmental factors. However, gastric dysmotility and visceral hypersensitivity are thought to play a major role in the pathogenesis of functional dyspepsia, and other factors may affect gastric motility and visceral hypersensitivity. In the diagnosis of functional dyspepsia, upper gastrointestinal endoscopy is important to rule out organic diseases; an H. pylori test-and-treat strategy is currently not recommended for the initial diagnostic step in Korea where both H. pylori prevalence and gastric incidence are very high. Anti-secretory drugs (proton pump inhibitors and histamine 2 receptor antagonists) and prokinetics can be used as a first-line treatment depending on the patient's symptoms (postprandial distress syndrome vs. epigastric pain syndrome). If initial treatment is not effective, tricyclic antidepressants and/or anxiolytics (fundic relaxants) could be used in selected patients.
Anti-Anxiety Agents ; Antidepressive Agents, Tricyclic ; Diagnosis* ; Dyspepsia* ; Endoscopy, Gastrointestinal ; Gastric Acid ; Helicobacter pylori ; Histamine ; Humans ; Hypersensitivity ; Incidence ; Inflammation ; Korea ; Metabolic Diseases ; Prevalence

The determination of proliferative activity in the colorectal mucosa has been used for different purposes as the estimation of cancer risk and the assessment of disease activity in ulcerative colitis. But the prognostic significance of proliferative activity in colorectal carcinomas remains controversial. To investigate the prognostic significance of proliferative activity in colorectal carcinomas, the author estimated the proliferative activity immunohisto chemically using the monoclonal antibody PCNA and compared with clinicopathological data in 62 colorectal carcinomas. The results were as follows: 1) The reactivity of PCNA was more pronounced at the infiltrative margins of the tumors and tumor cells within the vascular or lymphatic channels. 2) The mean PCNA index of colorectal carcinomas was 40.5?0.4%. PCNA indices had positive correlations with lymph node invasion(p<0.05), liver, metastasis(p<0.05), Dukes' stage(p<0.01) and TNM classification(p<0.01), and didn't correlated with location of tumor, size of tumor, histological type and lymphtic or vascular invasion. 3) The patients with high PCNA index(more than 45%) represented higher recurrence or metastasis rate(37.5%) than those with low PCNA index (less than 45%)(19.3%) in Dukes B or C colorectal carcinomas during the follow-up periods, but not significant statistically. These results suggested that the reactivity of PCNA may be a useful prognostic factors in colorectal carcinomas.
Neoplasm Metastasis

Helicobacter pylori (H. pylori) infection is known to be negatively associated with allergic diseases including asthma in epidemiologic studies, mainly from the western countries. Bronchial asthma and allergic diseases are initiated by T-cells producing T-helper type 2 (Th2) cytokines (e.g. interleukin-4 (IL-4) and IL-5), which is inhibited by Th1 responses. H. pylori infection appears to inhibit Th2 responses, as well as to drive Th1 inflammation, and recent studies using experimental models of allergic airway disease elucidated a direct link between H. pylori infection and suppression of allergic airway disease through the induction of regulatory T cells. H. pylori has been implicated as a factor in idiopathic urticaria. Its eradication, however, has been shown conflicting results only. Therefore, routine H. pylori eradication for patients with chronic urticaria is not recommended. In Korea, prevalence of H. pylori infection shows a decreasing trend, and studies on association of H. pylori infection with asthma is warranting in the population.
Aluminum Hydroxide ; Asthma ; Carbonates ; Cytokines ; Helicobacter ; Helicobacter pylori ; Humans ; Hypersensitivity ; Inflammation ; Interleukin-4 ; Korea ; Models, Theoretical ; Prevalence ; T-Lymphocytes ; T-Lymphocytes, Regulatory ; Urticaria

We report two cases of multiple neurilemmomas occured in a 17-year-old female and in a 76-year-old male. Both cases were histopathologically confirmed as neurilemmoma and immunohistochemical study showed S-100 protein in the tumor cells of case 1.
Adolescent ; Aged ; Female ; Humans ; Male ; Neurilemmoma* ; S100 Proteins

We report two cases of multiple neurilemmomas occured in a 17-year-old female and in a 76-year-old male. Both cases were histopathologically confirmed as neurilemmoma and immunohistochemical study showed S-100 protein in the tumor cells of case 1.
Adolescent ; Aged ; Female ; Humans ; Male ; Neurilemmoma* ; S100 Proteins

The epidermal growth factor receptor (EGFR) is a transmembrane glycoprotein whose expression is a possible cause of increased tumor cell proliferation and has recently been proposed as a prognostic parameter in some tumors. Expression of EGFR was studied immunohistochemically in 62 cases of human renal cell carcinomas to evaluate their possible prognostic roles. We also examined the correlation between EGFR expression and cell proliferation by immunohistochemical staining for proliferating cell nuclear antigen (PCNA). Fifty-six cases (90.3%) expressed EGFR, with staining largely confined to the cell membrane and cytoplasm. Staining intensity of EGFR was directly correlated with nuclear grade (p=0.000) and TNM stage (p=0.015). PCNA index was significantly higher in EGFR-positive tumors than in EGFR- negative tumors. There was a statistically significant positive correlation between PCNA index and increasing staining intensity of EGFR (p=0.000). In univariate survival analysis, EGFR expression was significantly associated with shortened survival. However, EGFR expression was not an independent prognostic factor by multivariate analysis. These findings suggest that EGFR expression may be an important cause of tumor cell proliferation in renal cell carcinoma and further studies are needed to evaluate whether EGFR expression analysis provides independent prognostic information.
Carcinoma, Renal Cell* ; Cell Membrane ; Cell Proliferation* ; Cytoplasm ; Epidermal Growth Factor* ; Glycoproteins ; Humans ; Multivariate Analysis ; Proliferating Cell Nuclear Antigen ; Receptor, Epidermal Growth Factor*