Obvious mitotic abnormalities have long been known to occur very commonly in malignant tumours, but as a result of recent improvements in technique much more reliable cytogenetic observations are now possible. Transplantable tumours were the first to be accurately examined, and these were found to consist of populations of cells with variations around a modal (" stemline ") type which differs i...

BACKGROUND The combination of endobronchial biopsy with cytological brushing is considered the best procedures for the diagnosis of lung cancer during bronchoscopy. AIM To asses the diagnostic yield for lung cancer (with visible endobronchial alterations at endoscopy) of three fiberoptic bronchoscopy procedures: endobronchial biopsy, cytological brushing and bronchial cytological washings. ...

pherson in 1952 3). Its histogenesis is still uncertain, and there are few cytological articles about this tumor15). We tried cytological analysis of touch preparation of a case of alveolar soft part sarcoma and report on its cytological features. On the other hand, metastatic renal adenocarcinoma is necessary to be differentiated from alveolar soft part sarcoma, so we also performed imprint pr...

Cervical intraepithelial neoplasia in postmenopausal women with negative cervical cytology Four cases of cervical intraepithelial neoplasia were detected among 50 postmenopausal women in whom cytological examination of a cervical smear yielded negative results, indicating the need for cytological surveillance of women into old age. Cytological and colposcopic examination of the cervix was perfo...

PURPOSE To compare the cytological results of ultrasound-guided fine-needle aspiration (US-FNA) cytology of thyroid nodules to sonographic findings and determine whether US findings are helpful in the interpretation of cytological results. MATERIALS AND METHODS Among the thyroid nodules that underwent US-FNA cytology, we included the 819 nodules which had a conclusive diagnosis. Final diagnos...

UNLABELLED Breast cancer is the second leading cause of cancer death in women, while in Eastern Europe the most common form of diagnosed cancer. Out of the multiple possibilities of early detection of mammary neoplasia that have been elaborated, only mammography has proved to be a simple, efficient method and of a high sensitivity, almost 90% However, the cytological confirmation of diagnosis a...

BACKGROUND Aneuploidy appears to be a highly specific marker for cancer, and measurement of cellular DNA content by flow cytometry is rapid and reliable. This study was undertaken to determine if the addition of DNA analysis improved the sensitivity of cytological diagnosis of malignancy in pleural fluid. METHODS Pleural effusions from 92 patients were studied by cytological examination and f...

Cytology is a simple, rapid, and inexpensive method used for pre-operative diagnosis of canine mammary tumors (CMTs) in veterinary practice. Studies related to human breast cancer showed the Robinson's grading system-established for invasive ductal carcinoma, not otherwise specified (IDC, NOS) and used on cytological material-to not only closely correspond to the histopathological grading but a...

Many bacterial adaptive responses to changes in growth conditions due to biotic and abiotic factors involve reprogramming of gene expression at the transcription level. The bacterial RNA polymerase (RNAP), which catalyzes transcription, can thus be considered as the major mediator of cellular adaptive strategies. But how do bacteria respond if a stress factor directly compromises the activity o...

Hybridization produces strong evolutionary forces. In hybrid zones, selection can differentially occur on traits and selection intensities may differ among hybrid generations. Understanding these dynamics in crop-wild hybrid zones can clarify crop-like traits likely to introgress into wild populations and the particular hybrid generations through which introgression proceeds. In a field experim...