598
Two of these six cases showed mucosal spread without stromal invasion ( type A ) ; the remaining four cases presented a direct extension ( type B ) from muscle - invasive carcinomas of the bladder .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 None