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Objectives and study design Angiogenesis may be related to the pathogenesis and prognosis of chronic rhinosinusitis with nasal polyposis. This cross-sectional study, in a tertiary university hospital, evaluates angiogenesis parameters in nasal polyps, antrochoanal polyps and middle turbinates. Subjects Nasal polyps obtained from 24 consecutive patients, were compared to 10 normal middle turbinates...
Microvessel density (MVD) and area (MVA) were assessed in 53 clinically silent pituitary microadenomas and in surrounding normal pituitary tissue using CD34 immunostaining and digital image analysis system. Twenty-one microadenomas (40%) were avascular; in the others, both MVD and MVA were significantly lower than in the normal pituitary tissue. No significant differences in MVD and MVA were found...
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