Extranodal extension in lymph node-positive prostate cancer.

Departments of Pathology and Urology, Indiana University School of Medicine (LC), Indianapolis, Indiana; the Division of Radiation Oncology (TMP), the Department of Pathology (JCC), the Department of Urology (BCL, HZ), and the Section of Biostatistics (JS, EJB), Mayo Clinic and Mayo Foundation, Rochester, Minnesota; and Bostwick Laboratories (DMR, DGB), Richmond, and University of Virginia Health Sciences Center (DGB), Charlottesville, Virginia