Preoperative HRCT is feasible and effective and may contribute to locoregional tumor control of advanced rectal cancer, which is to be proven in an ongoing phase III trial.
Three-dimensional endorectal ultrasonography provides previously unattainable scan planes and enables accurate staging of obstructing rectal tumors. This technique may improve therapy planning in advanced rectal cancer by selecting patients who require preoperative adjuvant therapy.
In this study, VATS proved to be a sensitive technique for staging of pulmonary lesions. Thoracoscopic wedge resection may have significant impact on the operative management of carefully selected patients with peripheral pulmonary lesions.
beta-hCG-Positive gastric carcinomas are found more frequently in advanced tumour stages and poorly differentiated carcinomas. These carcinomas, however, seem not to excrete beta-hCG in sufficient amounts to produce measurable serum values. Therefore, beta-hCG cannot be used a prognostic factor or for course control. The relevance of beta-hCG expression of tumour cells to the patients' prognosis remains obscure.
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