[Utility of diagnostic scales for hereditary non-polyposis colon cancer in the Mexican population].

Introduction: Hereditary non-polyposis colorectal cancer (HNPCC) represents 2 - 7% of all cancers. Diagnosis is made by means of the Amstedam criteria, or the modified Amsterdam and Bethesda.

Objective: Aim was to evaluate the clinical application of the diagnostic scales for HNPCC in our population and to determine the clinical characteristics that these patients reveal at the time of diagnosis.

[Pharyngoesophageal stenosis following surgery and radiotherapy in patients with advanced laryngeal cancer].

Objective: Our objectives were to 1) know the frequency of pharyngoesophageal stenosis in patients with clinical stage III transglottic laryngeal cancer (LCa Stage III) post-surgery and radiotherapy, and to 2) describe clinical, radiologic, and endoscopic characteristics of pharyngeal-esophageal stenoses and response to dilations.

Materials And Methods: We conducted a series of consecutive cases from 1997-2000 at the National Cancer Institute (INCan) in Mexico City and included patients with transglottic (LCa Stage III) post-surgery and -radiotherapy. We evaluated dysphagia and stenosis (length, diameter, and localization) by radiology and endoscopy before and after surgery and radiotherapy.