Cláudio Rolim Teixeira

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A clinicopathological analysis of the risk factors for lymph node metastasis was performed in 177 patients with submucosal invasive colorectal carcinoma (CRC). The submucosal deepest invasive portion was histologically subclassified as well (W), moderately (M), or poorly (Por) differentiated. M type was further subdivided into moderately-well (Mw) and(More)
BACKGROUND Proliferative activity may be a useful measure of malignant potential for a variety of tumors. Colorectal carcinomas contain multiple cell populations with different biologic properties. The invasive tumor margin is thought to represent the area with the highest metastatic potential. METHODS Cell proliferation at the invasive tumor margin of 49(More)
BACKGROUND AND STUDY AIMS Magnifying colonoscopy with indigo carmine dye and the analysis of the capillary and the pit patterns by computed virtual chromoendoscopy (Fujinon Intelligent Color Enhancement, FICE) with magnification are effective for the differential diagnosis of neoplastic and non-neoplastic lesions. This study aimed to compare the accuracy of(More)
BACKGROUND The duodenal ulcer always represented a very prevalent pathology among the gastrointestinal tract diseases worldwide. The average prevalence is approximately 10% of the world population. In the 90s the literature (both European and North American) begin to show a crescent reduction of this prevalence in many countries. AIM To show through a(More)
BACKGROUND Colonoscopy with spectral estimation technology and magnifying zoom imaging allows the characterization of the fine superficial capillary pattern of normal mucosa and of colorectal lesions. The endoscopic distinction of the capillary pattern of colorectal lesions might contribute to the differential diagnosis among normal, hyperplastic, and(More)
According to the histologic features at the deepest level of tumor invasion (the tumor apex), we classified colorectal carcinomas as follows: well differentiated (W), moderately differentiated (M), and mucinous (Muc). By assessing its glandular configuration and cellular arrangement, the M type was further subdivided in to two different groups: moderately(More)
To examine the malignant potential of submucosal invasive colorectal carcinoma, the relationship between proliferating cell nuclear antigen (PCNA) expression and clinicopathologic risk factors for lymph node metastasis was studied in 149 patients with submucosal invasive colorectal carcinoma. The depth of submucosal invasion was classified as scanty or(More)