Retention polyp

Some methods for fast chromatographic separation and detection of PolyPs in food, biological samples or water have been proposed (Halliwell et al., 1996 Baluyot and Hartford, 1996 Svoboda and Schmidt, 1997 Bewsler et al., 2001). A single-column chromatographic system with indirect UV detection was elaborated, and the dependencies of PolyP retention on the concentrations of pyromellitic acid and ethylenediaminetetraacetic acid (EDTA) in the mobile phase and on the pH of the eluent were determined (Svoboda and Schmidt, 1997). A high performance liquid chromatography (HPLC) method has also been used for the separation of PolyPs (Lorenz and Schroder, 1999). 

NSAIDs can impair renal function, cause fluid retention, and provoke hypersensitivity reactions, including bronchospasm, aggravation of asthma, urticaria, nasal polyps, and rarely, anaphylactoid reactions. These reactions may occur even in those who have previously used NSAIDs without any ill effects. NSAIDs inhibit uterine contraction and can cause premature closure of the fetal ductus arteriosus. 

Gastric polyps are mainly small and an incidental finding, although large ones may prolapse and cause retention-like symptoms. They are divided into non-neoplastic (Fig. 3.31) and neoplastic (Fig. 3.32). Of the former 85% are glandular cysts and hyperplastic polyps, the rest inflammatory fibroid polyps and hamartomas. 

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