Peyronie's disease

[pā-rō-nēz]
n.
  1. A disease of unknown cause in which patches or strands of dense fibrous tissue surround the cavernous body of the penis, causing deformity and painful erection.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.