Lymphedema is beginning to get more attention in part because so many cancer patients now are living far longer, forcing doctors and researchers to focus on the long-term effects of cancer treatments. And patient advocates are pushing to improve insurance benefits for the treatments.

Insurers often deny coverage because they don't have a certified lymphedema specialist in their plan, or some plans may put a cap on the amount of treatment a patient receives. In January, a Virginia law began requiring insurers to cover the costs of lymphedema treatment and supplies. Lawmakers in New York and Massachusetts also are mulling lymphedema-related legislation.

But for many patients, the biggest hurdle is getting the right diagnosis. Long Island, N.Y., shop owner Catherine Pascucci had three lymph nodes removed and a lumpectomy and radiation treatment for breast cancer three years ago. After her surgery, she returned to her fragrance shop, lifting boxes and ringing sales, never knowing that such overuse put her at risk for lymphedema.

About three months after cancer surgery, she noticed her bracelet was tight, but her breast surgeon dismissed her swollen arm as a reaction to a bug bite. Months later, another doctor told her about lymphedema, and she finally sought the right treatment. Today she must undergo regular physical-therapy treatments and wear compression bandages on both arms to control the swelling.

"My doctors never said, 'Don't lift. Don't carry,' " says Ms. Pascucci, 65 years old, who now hands out lymphedema brochures to customers. "Now I have to deal with this the rest of my life."

When lymphedema is caught early, treatment is relatively effective and the condition can be kept under control with minimal care. A physical therapist, who should have 120 to 140 hours of specialized training, uses a gentle massage that helps the fluid drain away from the painful arm or leg. The treatment, which may be needed two or more times a week for several weeks, can cost as much as $200 for an hourlong session. Custom compression garments and bandages can cost $700 or more, and most patients need two sets. The bandages generally must be replaced every six months.

Delays in treatment can be disastrous. After surviving invasive cervical cancer, Folsom, Calif., resident Carolyn Chastain developed lymphedema, but her insurer wouldn't pay for adquate treatment, and wouldn't pay for visits with a trained specialist, sending her to an unqualified therapist within the plan and providing ill-fitting bandages. After finally complaining to state regulators, the denials were reversed. But the delay in getting proper treatment left her with an irreversible form of the disease. The 43-year-old aerospace engineer was forced to quit work and now spends about eight hours a day on treatment, bandage care and exercises to cope with extensive swelling in both legs.

"The last thing a person should have to do after battling for their life with cancer," she says, "is to fight for every pittance of health care related to lymphedema."

The National Lymphedema Network, www.lymphnet.org, provides extensive information on the disease.