Subcutaneous fat necrosis is manifested by erythematous tender nodules on the legs, buttock or trunk and is associated with pancreatic disease including acute and chronic pancreatitis, pancreatic carcinoma, pseudocyst, pancreatic stone and other diseases. Its histologic findings are pathognomonic and reveal foci of subcutaneous fat necrosis with "ghost-like" anucleated cells with thick "shadowy wall" and surrounding inflammatory infiltrate consisting of polymorphonuclear cells, eosinophils, lymphocytes, histiocytes, foam cells and foreign body giant cells. We experienced a case of subcutaneous fat necrosis associated with pancreatic adenocarcinoma manifested by subcutaneous nodules in the buttock and lower extremities and by arthralgia of the left knee in a 67-year-old woman. Therefore, we are reporting to emphasize the importance of the skin findings of the internal disease.
Female ; Humans ; Adenocarcinoma

Balancing the rates of cell proliferation and cell death is important in maintaining normal tissue homeostasis. The relationship among apoptosis, cell proliferation and factors influencing apoptosis according to the histologic types in chemically induced mammary tumorigenesis appears important in understanding the pathogenesis of breast carcinoma. In this study, we investigated alterations in the kinetics of cell proliferation and apoptosis during rat mammary tumorigenesis induced by 7, 12-dimethylbenzanthracene (DMBA) and we related these changes to the expressions of bcl-2, p53, and TGF-beta. Seven-week-old female Sprague-Dawley rats were divided into an experimental group (20 mg/ml DMBA by oral intubation) and a control group. The results were as follows. 1. In the experimental group, breast tumors occurred in twenty two of fifty nine rats(37.3%, 22/59), and the total number of tumors was 100 (4.5 2.0/rat). The histological classification was infiltrating ductal carcinomas (n=5), ductal carcinomas with focal invasion (n=10), intraductal carcinomas (n=36), adenomas accompanied with intraductal proliferation (n=35), intraductal proliferation (n=9), and adenomas (n=5); 2. The differentiation of terminal end bud into alveolar bud (AB) in the experimental group was significantly lower than that of the control group (p<0.05); 3. BrdU labeled tumor cells were mainly located at the peripheral portion of tumor cell nests. BrdU labeling indices were highest in ductal carcinomas, less pronounced in intraductal proliferation, and lowest in adenomas, whereas apoptosis levels were highest in adenomas, less pronounced in intraductal proliferation, and lowest in ductal carcinomas (p<0.05); 4. p53 protein was not expressed in any breast tumors. Although the expression of bcl-2 protein was highest in infiltrating and focal infiltrative ductal carcinomas (58.3%), compared with adenomas, intraductal proliferation, and intraductal carcinomas (p<0.05), the extent of its expression was less than 1% of all tumor cells; 5. TGF-beta was mainly expressed in the central portion of tumor cell nests rather than in peripheral portion, and TGF-beta immunoreactive tumor cells displayed good differentiation and did not reveal BrdU immunoreactivity. TGF-beta labeling index of infiltrating and focal infiltrative ductal carcinomas was significantly higher than that of intraductal carcinomas, intraductal proliferation, and adenomas (p<0.05). Based on these results, it is thought that high cell proliferation and the suppression of apoptosis are closely associated with DMBA-induced rat mammary carcinogenesis. However, the suppression of apoptosis is not related to p53 mutation, bcl-2, and TGF-beta. TGF-beta seems to be reversely related to tumor cell proliferation but closely associated with the progression of the tumor, especially an invasion of breast carcinomas.
9,10-Dimethyl-1,2-benzanthracene ; Adenoma ; Animals ; Apoptosis* ; Breast Neoplasms ; Bromodeoxyuridine ; Carcinogenesis* ; Carcinoma, Ductal ; Carcinoma, Intraductal, Noninfiltrating ; Cell Death ; Cell Proliferation* ; Classification ; Female ; Homeostasis ; Humans ; Kinetics ; Rats* ; Rats, Sprague-Dawley ; Transforming Growth Factor beta

The prognosis of malignant ovarian tumor is poorer than that of borderline malignant ovarian tumor, Therefore an accurate diagnosis and estimation of the biologic behavior of the tumor are necessary for proper management of the patient. The histologic investigation of the tumor may provide information on the estimation of the malignant potential of tumor cells, but it may be a questionable method because of the subjective determination of tumor grade. Quantification of proliferative activity of tumor cells may play a role as an objective method to provide an estimation of the malignant potential of tumor cells. An evaluation of histologic findings was done on 84 cases of ovarian mucinous and serous tumors that were surgically resected and diagnosed during the period from January 1981 through July 1992. The proliferating cell nuclear antigen (PCN A) labelling index estimated from the immunohistochemical stain for PCN A and the Sphase fraction and porliferative index obtained from flow cytometric DN A analysis were assessed each other with histologic findings. The results are as follows: The presence of aneuploidy in malignant tumors was statistically significant as compared with benign tumors. The borderline malignant tumors showed no significant difference between the number of diploidy and aneuploidy. The PCNA labelling index, S-phase fraction and proliferative index tended to increase as the histologic grade of tumors went up. They were higher in malignant tumors than in others. The PCN A labelling index, S-phase fraction and proliferative index were higher in tumors with aneuploidy than in those with diploidy. In contrast to borderline malignant tumors, the PCNA labelling index in malignant tumors revealed a significant relation with the mitotic index. The S-phase fraction and proliferative index showed, in malignant tumors, a close correlation with the architectural grade and nucleolar grade, but not in borderline malignant tumors. Considering these results, the presence of aneuploidy, PCNA label.

An immunoperoxdase technique in electron microscopy was used to investigate the ultrastructural site of keratinolytic proteinase (KPase) of M crosporum cans in sections of skin from guinea pigs infected with the same organism. Ultrastructurally, the KPase was present only in the cell walls of the invading dermatophytes as a continuous deposition of the electron-dense reaction product on the inner and outer aspects of the cell wall of the fungal hyphae without deposition in the keratin surrounding the invading hyphae. Our results suggest that the KPase may not play an absolute role in the invasion of dermatophytes into keratinized tissue in vivo.
Animals ; Arthrodermataceae ; Cell Wall ; Guinea Pigs* ; Guinea* ; Hyphae ; Immunoenzyme Techniques* ; Microscopy, Electron* ; Microsporum* ; Skin* ; Tinea

E-cadherin is a calcium-dependent epithelial adhesion molecule which plays a role in the initial step of invasion of cancer cells. The step that follows the migration of separated tumor cells is a proteolytic lysis of basement membrane and extracellular matrix by protease of epithelial and endothelial cells such as matrix metalloproteinase (MMP). Vascular endothelial growth factor (VEGF) is known to be an endothelial cell-specific powerful mitogen as well as a vascular permeability factor. This study is aimed to evaluate the correlation between expression of these factors and pathologic or clinical variables and the roles and prognostic significance of those factors in squmous cell carcinoma and adenocarcinoma of the lung. Immunohistochemical stains were performed for E-cadherin, MMP-2, and VEGF in surgically resected specimens from 90 patients with squmous cell carcinoma and adenocarcinoma of the lung. Mean age of the patients was 59.7 years. Histologic type was categorized into 56 cases of squamous cell carcinoma and 34 cases of adenocarcinoma. Mean survival period of the 35 patients was 54 months. The immunohistochemical stains for E-cadherin, MMP-2, and VEGF revealed positive reaction in 67 cases (74.4%), 43 cases (47.8%), and 34 cases (37.8%), respectively. The expression of E-cadherin was higher in adenocarcinoma (82.4%) than in squamous cell carcinoma (69.6%). MMP-2 was expressed in the tumor cells, especially those invading into the surrounding stroma. The expression of MMP-2 was significantly correlated with the survival rate (p<0.05). The expression of VEGF in the tumor cells was significantly higher in cases with lymph node metastasis (p<0.05). In conclusion, these findings suggest that the expression of MMP-2 and VEGF predict poor prognosis of patients with squmous cell carcinoma and adenocarcinoma of the lung and that VEGF may play a role in tumor metastasis.
Adenocarcinoma* ; Basement Membrane ; Cadherins* ; Carcinoma, Squamous Cell* ; Coloring Agents ; Endothelial Cells ; Extracellular Matrix ; Humans ; Lung* ; Lymph Nodes ; Neoplasm Metastasis ; Prognosis ; Survival Rate ; Vascular Endothelial Growth Factor A*

Five cases of ovarian serous borderline tumor associated with multiple peritoneal implants were analysed. The age of 5 patients ranged from 34 to 45(mean: 39) years at the time of diagnosis. Two patients presented with secondary infertility underwent hyperstimulation of the ovary under the in vitro fertilization program. One patient was presented with abdominal pain and the remaining two with lower abdominal mass accompanied by abdominal pain. Serous surface papilloma of borderline malignancy, involving one or both ovaries, was present in all 5 cases and papillary serous cystic tumor of borderline malignancy was associated simultaneously in one or both ovaries in all cases. Marked adhesions between the pelvic organs, and multiple granularities and nodularities of the omentum and peritoneum were noted. Microscopically, the peritoneal lesions were composed of noninvasive implants of tumor cells and pasmmoma bodies on the surface of entire pelvic and abdominal organs. Flow cytometric analysis of nuclear DNA content from paraffin-embedded tissue fo primary ovarian tumor classified as aneuploidy in 3 cases and as diploidy in 2 cases. The DNA index of the aneuploid tumors ranged from 1.21 to 1.37. Four patients underwent hysterectomy, bilateral salpingo-oophorectomy and partial omentectomy in which two were followed by chemotherapy and one case underwent bilateral salpingo-oophorectomy.

No abstract available.
Neck*

Among the enzymes which are responsible for basement membrane breakdown, matrix metalloproteinases (MMP) form a family of neutral proteases that are regulated at the levels of gene transcription, proenzyme activation by the cleavage of protein, and the inhibition of the active enzyme by tissue inhibitors of matrix metalloproteinases (TIMP). Recent reports have demonstrated that the expression of these proteolytic enzymes are elevated in several solid tumors and that it can be associated with invasiveness and poor prognosis. We examined the expression of MMP-2, MMP-9, TIMP-1 and TIMP-2 by immunohistochemistry in 160 cases of infiltrating ductal carcinoma. And we compared these data with the established prognostic parameters - tumor size, nodal status, clinical stage, hormonal receptor status, microvessel density, and TGF-beta1 expression in order to evaluate how MMP and TIMP expression are associated with breast cancer progression and prognosis. Microvessel density in invasive breast carcinoma was significantly correlated with tumor size and recurrence (p<0.05). The immunohistochemical expression of TGF-beta1 was significantly associated with tumor size, lymph node metastasis, and clinical stage (p<0.05). The microvessel density was significantly correlated with TGF-beta1 expression in more than 50% of tumor cells. The immunohistochemical expression of MMP-2 and MMP-9 were significantly correlated with nodal metastasis and absence of immunoreactivity for estrogen and progesterone receptors. The immunohistochemical expression of TIMP-1 was inversely correlated with clinical stage and microvessel density while that of TIMP-2 was inversely correlated with clinical stage (p<0.05). Small size of tumor, presence of progesterone receptor, highly differentiated histologic grade, and absence of immunoreactivity for MMP-9 were significantly associated with higher survival rate, but in multivariate analysis only tumor size and MMP-9 expression appeared to affect survival independently.
Basement Membrane ; Breast Neoplasms* ; Breast* ; Carcinoma, Ductal ; Estrogens ; Humans ; Immunohistochemistry ; Lymph Nodes ; Matrix Metalloproteinases ; Microvessels ; Multivariate Analysis ; Neoplasm Metastasis ; Peptide Hydrolases ; Prognosis ; Receptors, Progesterone ; Recurrence ; Survival Rate ; Tissue Inhibitor of Metalloproteinase-1 ; Tissue Inhibitor of Metalloproteinase-2 ; Transforming Growth Factor beta1

Both spindle cell variant of squamous cell carcinoma and atypical fibroxanthoma are most commonly presented as a solitary, often ulcerated nodule, occurring on sun-exposed skin of the elderly. These lesions also share the histologic features of diffuse or indistinct fascicular arrangement of polygonal or pulmp spindle cells. Therefore it is not easy to differentiate immunohistochemistry is done. A case of 73 year old woman with squamous cell carcinoma of the skin resembling atypical fibroxanthoma is presented.
Female ; Humans

No abstract available.
Biopsy, Fine-Needle* ; Fasciitis*