Biomedical subjects

Atila Fenjvesi

Publications and source records attributed to Atila Fenjvesi.

2 recordsLinked to original sources

PubMedDate not supplied

[Prognostic significance of tumor-induced angiogenesis in colorectal carcinoma].

INTRODUCTION: Tumor-induced angiogenesis is a central pathogenic step in the process of tumor growth, invasion and metastasis. The aim of this study was to analyze the quantitative expression of angiogenesis in colorectal carcinoma and to determine if and how angiogenesis correlates with other clinicopathologic factors and prognosis. MATERIAL AND METHODS: This study included 40 patients who underwent curative resection of colorectal cancer at the Department of Surgery of the Senta General Hospital with complete 5 years follow-up or till death. Microvessels were identified immunohistochemically, using monoclonal CD31 antibodies. The microvessel count was assessed by means of stereology with test grid M42, as well as vascular surface density in the stromal volume at the invasive front of colorectal cancer. RESULTS: Tumor-induced angiogenesis count of colorectal carcinomas statistically significantly correlated with stage of disease and histologic tumor grade. There was no significant correlation between intratumoral microvessel density and sex and age of patients, localization and histologic tumor type. Five-year survival rate in patients with hypervascular colorectal tumors was statistically significantly lower than in patients with hypovascular tumors. Thus, microvessel density in colorectal cancer is an independent prognostic factor, but its significance is less than the importance concerning stage of disease and histologic grade of tumor. CONCLUSIONS: Intratumoral microvessel density quantification in histologic specimens of colorectal carcinoma reflects the biological malignant potential of tumors and may be a useful additional predictive marker. Assessment of intratumoral microvessel count might be used for determining the pathologic stage when adjuvant therapy is concerned. Microvessel density in tumor specimens is valuable in stratifying patients in planning appropriate adjuvant and antiangiogenic therapy after surgery.

Adult↗

PubMedDate not supplied

[Deciduosis peritonei--a case report].

INTRODUCTION: The occurrence of ectopic decidua (deciduosis) has been observed most often in the ovaries, uterus, and cervix. It has been established in approximately 90% of patients who have undergone laparotomy during pregnancy. A peritoneal localization is less frequent and usually an asymptomatic incidental finding, but is occasionally associated with massive and potentially fatal hemoperitoneum, abdominal pain and dystocia. Ectopis decidua is a physiological phenomenon of pregnancy and arises from a progesterone-induced metaplasia of subserosal stromal cells. CASE REPORT: A 32-year-old G1P1 female underwent cesarean section at 39 weeks gestation because of imminent fetal asphyxia. The laparotomy revealed a greyish-yellow soft nodule on the parietal peritoneum. On histologic examination the biopsy lesion was highly vascular and was composed of large polygonal decidualized cells with abundant eosinophilic, focally vacuolated cytoplasm. The nuclei were regular, with fine chromatin and inconspicuous nucleoli. Ectopic decidua was infiltrated by blood and surrounded with adipose tissue necrosis and mild chronic inflammation. DISCUSSION AND CONCLUSION: The differential diagnosis of peritoneal deciduosis included deciduoid mesothelioma, metastatic carcinoma (especially if decidual cells have a vacuolated cytoplasm mimicking signet-ring cells), and metastatic melanoma. Decidual cells showed immunoreactivity for vimentin and progesteron receptors and focal positivity for desmin and smooth muscle actin. The presence of cellular atypia, mitotic activity, and immunoreactivity for cytokeratin 5/6 and calretinin will assist in making the diagnosis of deciduoid mesothelioma. The diagnosis of metastatic carcinoma is assisted by the nuclear features and cytokeratin immunoreactivity. A positive immunostain for S-100 and/or HMB-45 will assist in the diagnosis of metastatic melanoma.

Adult↗