548
The patient ( J . B . ) , a 17 - year - old white male with PWS , was found to have 47 chromosomes with a supernumerary , paternal der ( 15 ) consisting of the short arm and the proximal long arm of chromosome 15 , and distal chromosome arm 3p .
 Disease: PWS
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: PWS