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  • 1
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We studied the interrelation of morphometric features, the presence of human papilloma virus antigens (localized by the immunoperoxidase method), and the degree of koilocytosis in koilocytotic cervical intraepithelial neoplasia. We determined the morphometric features of the cells from the deep, the middle, and the superficial layers of the affected koilocytotic epithelium and in non-koilocytotic immature metaplasia and squamous cervical epithelium. This approach allows quantification of disturbances of maturation in cervical epithelium. Our quantitative findings support the contention of other authors that human papilloma virus infection is associated with a morphologically distinct lesion, which forms a morphological continuum with neoplasia. It can be argued that, in addition to the degree of koilocytosis, nuclear enlargement and excessive cellular enlargement in the middle layer of the affected epithelium are viral-related effects. With increasing immaturity of the cervical intraepithelial neoplasia all investigated viral-related changes are less prominent. These findings suggest that in neoplastic transformation the morphological and antigen expression of human papilloma virus infection is suppressed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 6 (1982), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Morphometric methods were applied to predict the clinical course of individual patients with breast cancer. Measurement of tumour diameter, assessment of mitotic and cellular indices, and quantitative microscopy of nuclear features were assessed together with nuclear features and histological grades. Of the tumours from 78 patients investigated, 42 had died from metastases within 6.5 years (‘non-survivors’), while the other 36 were alive and well without evidence of metastases at the end of the follow-up period (minimum 6.5 years) (‘survivors’). If the tumours of the 42 non-survivors are compared with those of 36 survivors, there are many reproducible significant differences, the most important being cellularity index and mitotic activity index, followed by quantitative microscopical nuclear parameters and nuclear and histological grade. Discriminant analysis, of the quantitative microscopical data alone showed 82% of all patients to be correctly classified as survivor or non-survivor. By contrast with the axillary lymph node invasion status alone, or the tumour diameter and axillary lymph node status together, 59% and 64% of the patients were predicted correctly as survivor or non-survivor. With a more realistic statistical approach of discriminant analysis, 78% of the patients were classified correctly with quantitative microscopy, in place of 54% with the axillary lymph node status, 56% with the TNM-system and 64% with a combination of TNM system and nuclear and histological grade. Morphometry thus seems possible to predict the outcome of individual patients more accurately than with the usual staging/grading methods. This technique might therefore prove to be useful in the selection of patients for adjuvant chemotherapy.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 5 (1981), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The cytological and histological features of 20 cases of adenocarcinoma of the cervix are presented of which 14 cases were in situ and two were microinvasive. The frequent association of atypia with malignancies of the cervical squamous epithelium is stressed. Abnormal reserve or stem cells were found in many of these cases. This study demonstrates the importance of the proper identification of these cells in cytological material and gives support to the theory that these cells play a role as a precursor cell to squamous and glandular neoplasms.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 5 (1981), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Only 3% of patients with T1 bladder tumours die of bladder carcinoma within 5 years (Williams, Hammonds & Saunders 1977), therefore these patients are initially treated conservatively. There would however be benefits from being able to predict which patients should be treated more aggressively. Morphometry was applied to quantitate characteristic microscopical features of the removed T1 tumours in 16 patients who had survived for five years and in seven patients dead from the tumour, in order to evaluate the prognostic value of this method. The measurements of nuclear and cytoplasmic areas were made on routine H & E sections with a graphic tablet (ASM, Leitz). Statistical analysis of the obtained data revealed that there were significant differences between the two groups. It indicated that morphometric parameters of T1 bladder tumours can have prognostic as well as therapeutic significance which will be further tested in a prospective study.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 392 (1981), S. 33-44 
    ISSN: 1432-2307
    Keywords: Morphometry ; Secretory peritoneal mesothelioma ; Transcoelomic metastasis ; TEM of malignant mesothelial cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A 29 year old woman, living in an area with a high level of asbestos exposure, developed the clinical features of peritoneal mesothelioma. The quantitative cytological features differed from those of other mesotheliomas described in the literature in that the tumor cells had a large amount of vacuolated cytoplasm and an extremely low N/C ratio, resulting in a “benign” appearance. The ultrastructural study provided evidence for the production and accumulation of secretory products (mucolipids) by the tumor cells. Treatment with chemotherapy and radiation resulted in temporary remission, lasting for 20 months. However the patient then developed pulmonary involvement of the carcinomatose a form and pleural tumors. The cytological pattern and the morphometric features of the metastatic floating malignant mesothelial cells in the pleural fluid closely resembled those of the primary peritoneal tumor. This case appears to be an example of secretory peritoneal mesothelioma with a bad prognosis, not withstanding the well-differentiated appearance of the tumor cells.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 393 (1981), S. 159-164 
    ISSN: 1432-2307
    Keywords: Morphometry ; Gastric carcinoma ; Gastric cytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The applicability of morphometry in the cytological diagnosis of adenocarcinoma of the stomach was tested. Useful morphometric variables were extracted from 41 cases with known histology, and applied to 33 other cases: in all these cases the histological diagnosis were successfully predicted. Morphometry was applied an additional 39 cases selected for difficulties in cytodiagnosis. In the group of cases with suspicious cytology in particular, refinement of cytodiagnosis was achieved by the application of morphometry.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 396 (1982), S. 9-18 
    ISSN: 1432-2307
    Keywords: Morphometry ; Breast carcinoma ; Breast cytopathology ; Probability ; Threshold approach to diagnosis ; Quantitation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cells aspirated from breast lesions and smeared on slides were subjected to computer assisted morphometric analysis. Three groups of cases were studied. The first were those collected from patients with known benign and malignant lesions. The second group were 143 unselected consecutive aspirates from breast lesions and the third, a group with a needle aspirate cytodiagnosis “suspicious of malignancy”. The analysis showed the malignant cells to have larger nuclei with more anisokaryosis and more variation in the nuclear cytoplasmic ratios when compared with benign cells. When this form of semiautomatic analysis was applied to the “suspicious” group the accuracy of cytodiagnosis was improved.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-2307
    Keywords: Mesothelioma ; Malignant ; Morphometry ; Histochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty men and 7 women with malignant mesothelioma seen at the Free University Hospital from 1st January 1960 until 1st July 1981 were reviewed. The histological, histochemical and morphometrical findings are reported. These findings are compared with 25 cases of pleural metastatic carcinoma and 25 cases of reactive pleural lesions. Fourty-nine percent of malignant mesotheliomas produced hyaluronic acid, however all cases of pleural metastatic carcinomas failed to produce this substance. All cases of malignant mesothelioma were D-PAS negative while 15 cases of pleural metastatic carcinoma showed reactivity to D-PAS. All cases of malignant mesothelioma and 9 cases of metastases were CEA negative. To distinguish malignant mesothelioma from metastases it is advisable to perform the D-PAS staining first. If it is negative mesothelioma can be confirmed by showing hyaluronic acid activity. A positive CEA staining rules out mesothelioma. In our study it was shown that with these methods 18 of 37 mesotheliomas could be identified with certainty, and 22 of the 25 carcinoma metastases. Morphometrically the malignant mesotheliomas could not be distinguished from the metastases, however the reactive pleural lesions had smaller nuclei than the malignant cells with mean values below 30 mu2. In the malignant cases these values had a range from 36 to 101 mu2. In distinguishing between reactive pleural lesions and malignant mesothelioma the production of hyaluronic acid points to the malignant character of the lesion. Thus histochemistry and immunostaining are important in the distinction of malignant mesothelioma from metastases, while the value of morphometry lies mainly in the separation of reactive lesions from malignant mesothelioma.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular histology 20 (1988), S. 311-312 
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular histology 27 (1995), S. 411-419 
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A novel histoprocessing method for paraffin sections is presented in which the combination of vacuum and microwave exposure is the key element. By exploiting the decrease in boiling temperature under vacuum, the liquid molecules in the tissues have been successfully extracted and exchanged at relatively low temperatures during each of the steps from dehydration, clearing, and impregnation. In this vacuum-microwave method, an extremely short time suffices for the preparation of optimal-quality paraffin blocks. No xylene (but isopropanol instead) was used as the intermediate solvent. Thirty biopsies (thickness 2–4 mm) can be processed in 40 min. In addition, this approach can be used to produce large sections of giant blocks (4 × 6 × 1 cm3) which can be easily cut on a routine microtome due to the optimal paraffin impregnation. These giant blocks do not shrink during this vacuum-microwave histoprocessing.
    Type of Medium: Electronic Resource
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