Identification of amylase crystalloids in cystic lesions of the parotid gland.

摘要: OBJECTIVE To identify alpha-amylase crystalloid formations in parotid specimens obtained by fine needle aspiration. STUDY DESIGN The study concerned three cases of sialadenitis with formation observed between 1993 and 1998. In one these cases, transmission electron microscopy, mass spectrometry measurement amylase activity were used to characterize the nature crystalloids. RESULTS Light microscopy revealed same structure all cases. case, where material was saved, a biochemical method made it possible reveal high activity, while protein electrophoresis salivary alpha-amylase. CONCLUSION Crystalloids can be identified May-Grunwald-Giemsa Papanicolaou stain rapidly confirmed through determination activity.