Role of lymphadenectomy for prostate cancer: indications and controversies.

Pelvic lymph node dissection is the only reliable technique to detect low-volume lymph node involvement in prostate cancer. Extended lymph node dissections that include the internal iliac chain in addition to the external iliac and obturator packets have shown a significantly higher proportion of patients to have lymphatic involvement than previously recognized. The improved staging afforded by a more extended dissection raises several questions. Addressing these questions is the focus of this review.