Browsing by Author "Milenkovic, S. (57220419015)"

Purpose: It is known that expression disorders of cell cycle regulators play an important role in the development and prognosis of various malignant tumors. Cyclin expression changes during the cell cycle. This work aimed to analyse the expression of cyclin E in transitional cell carcinoma (TCC) and also to compare the expression of cyclin E with tumor stage and histological grade as well as to determine possible existence of differences in the expression of cyclin E in TCCs of the upper and lower urothelium. Methods: Twenty-four cases of TCC of the urinary tract were retrospectively analysed (6 cancers of the renal pelvis, 2 of the ureter and 15 of the bladder; 4 were infiltrative). Immunohistochemical staining for cyclin E of the analysed transitional cancer cells was assessed semiquantitatively: diffuse cyclin E expression + + + (> 50% of all cells), expression in larger groups of cells: + + (up to 50% of all cells), expression in individual cells or small cell clusters: + (<10% of all cells), and absence of expression. Tumor stage was based on clinical and morphological criteria. WHO classification (Lyon 2004) was used for determination of the histological grade. Results: Non-parametric Spearman's correlation showed that there was no statistically significant correlation between tumor stage and expression of cyclin E(ρ=-0331, p>0.05). Also, no statistically significant correlation between grade and the expression of cyclin E(ρ=-0077, p>0.05) was found. x 2 test results showed no statistically significant difference (x 2 = 2.136, p=0.775) in the expression of cyclin E between upper and lower urothelium. Conclusion: This study showed non significant decreased expression of cyclin E with poor differentiation, muscle invasion and upper/lower urothelium. Expression of cyclin E decreased with increasing histological grade and stage of the tumor. © 2011 Zerbinis Medical Publications.

Purpose: It is known that expression disorders of cell cycle regulators play an important role in the development and prognosis of various malignant tumors. Cyclin expression changes during the cell cycle. This work aimed to analyse the expression of cyclin E in transitional cell carcinoma (TCC) and also to compare the expression of cyclin E with tumor stage and histological grade as well as to determine possible existence of differences in the expression of cyclin E in TCCs of the upper and lower urothelium. Methods: Twenty-four cases of TCC of the urinary tract were retrospectively analysed (6 cancers of the renal pelvis, 2 of the ureter and 15 of the bladder; 4 were infiltrative). Immunohistochemical staining for cyclin E of the analysed transitional cancer cells was assessed semiquantitatively: diffuse cyclin E expression + + + (> 50% of all cells), expression in larger groups of cells: + + (up to 50% of all cells), expression in individual cells or small cell clusters: + (<10% of all cells), and absence of expression. Tumor stage was based on clinical and morphological criteria. WHO classification (Lyon 2004) was used for determination of the histological grade. Results: Non-parametric Spearman's correlation showed that there was no statistically significant correlation between tumor stage and expression of cyclin E(ρ=-0331, p>0.05). Also, no statistically significant correlation between grade and the expression of cyclin E(ρ=-0077, p>0.05) was found. x 2 test results showed no statistically significant difference (x 2 = 2.136, p=0.775) in the expression of cyclin E between upper and lower urothelium. Conclusion: This study showed non significant decreased expression of cyclin E with poor differentiation, muscle invasion and upper/lower urothelium. Expression of cyclin E decreased with increasing histological grade and stage of the tumor. © 2011 Zerbinis Medical Publications.

[No abstract available]

Spindle-cell epithelioma or "mixed tumor" of the vagina is an unusual and intriguing vaginal tumor consisting of both epithelial and mesenchymal components. A case of spindle-cell epithelioma of the vagina diagnosed at delivery of a 31-year-old primiparous woman is described. The excision of the mass was performed immediately after the delivery, which was uneventful. The patient was regularly followed up and no evidence of local recurrence or dissemination was found 40 months after surgery. The presentation and the diagnosis of this kind of tumor in pregnancy, and its effect on the pregnancy and delivery are still largely unknown. Since it is unlikely that any institution will have a large number of patients with this rare disease, case reports add further information to this entity. As the number of cases studied is small, close follow-up is recommended although there has been no report in the literature of metastasis so far.