Researchers at the National Institutes of Health (NIH) are investigating a new method of treating people ages 18-70 with advanced mycosis fungoides or Sézary syndrome using a stem cell transplant. If you or someone you know has mycosis fungoides or Sézary syndrome, you may be able to participate in this clinical trial. For more information and to find out if you qualify, call 1-866-444-2214 (TTY: 1-866-411-1010) or visit www.clinicaltrials.gov. Refer to study 02-H-0250. The NIH is part of the Department of Health and Human Services.