1097
There was local ulceration of the pleura , while , beyond this ulcer , the tumor formed a thick cake of discohesive tumor cells lining the pleural membrane ( Figure 2 ( c ) ) , with only focal , microscopic invasion into the fatty tissue of the parietal pleura .
 pleura, ulcer, tumor, discohesive tumor cells, pleural membrane, fatty tissue, parietal pleura
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 pleura, ulcer, tumor, discohesive tumor cells, pleural membrane, fatty tissue, parietal pleura