Search for: [Abstract = "us membrane of upper respiratory tract \(nasal polyps\). RCAS1 expression was not observed in healthy mucous membrane of upper respiratory tract derived from patients with not neoplasmatic disease. No difference was found in the expression of β\-Actin control protein between these tissue samples. • RCAS1 relative amount was observed to be statistically significantly higher in pharyngeal and laryngeal cancer than in chronic inflammation of upper respiratory tract \(nasal polyps\). • Higher average relative amount of RCAS1 protein was observed in tissue samples derived from patients with the presence of lymph node metastases in comparison to samples derived from patients without the presence of lymph node metastasis. • Among the group of patients with the presence of lymph node metastases the level of RCAS I expression was statistically significantly higher in patients with those, in which the neoplasmatic infiltration spread extracapsulary in comparison to the patients without extracapsular transition. • The analysis of RCAS1 average relative amount with respect to the tumor grading revealed statistically significantly higher value in cancers of high grade \(G3\) in comparison to G2 and Gł. • The RCAS1 expression level was found to be higher in cancers infiltrating pharynx than in laryngeal cancers. In 27 cases of pharyngeal and laryngeal cancers two samples wer"]
