镜下表现为唾液腺腺泡破坏消失,为密集的淋巴细胞所取代,导管上皮增生,形成上皮肌上皮岛,首选下列哪项诊断?( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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