23144
In this review , we aim to summarize recent researches concerning APA from multiple perspectives , including clinical presentation , histogenesis , immunohistochemistry and molecular features , diagnosis and differential diagnosis , treatment opinion and prognosis , which may provide theory and clinical basis for the future clinical treatment and research of this rare disease .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None