Which statement about chronic rejection is true?

Which statement about chronic rejection is true?

• A. Chronic rejection involves chronic inflammation and scarring over months to years with no cure.
• B. Chronic rejection occurs within minutes to 48 hours.
• C. Chronic rejection is reversible with increased drug therapy.
• D. Chronic rejection only affects the liver.

Answer: (A)

Chronic rejection is a long-term, immune-driven process that gradually damages a transplanted organ months to years after the transplant. It involves ongoing inflammation and progressive scarring (fibrosis) that leads to blood vessel changes and eventual loss of graft function. This course is typically not reversible with standard therapy, so the statement reflects the reality that there is no definitive cure and that progression can be slowed but not reliably reversed. The other ideas don’t fit: chronic rejection does not occur within minutes to 48 hours—that would be acute or hyperacute rejection, which happens much sooner after transplant. Increasing drug therapy to reverse chronic rejection is usually ineffective because the damage from fibrosis and vascular changes is not readily reversible. And chronic rejection is not exclusive to the liver; it can affect kidney, heart, lung, and other transplanted organs as well.

Chronic rejection is a long-term, immune-driven process that gradually damages a transplanted organ months to years after the transplant. It involves ongoing inflammation and progressive scarring (fibrosis) that leads to blood vessel changes and eventual loss of graft function. This course is typically not reversible with standard therapy, so the statement reflects the reality that there is no definitive cure and that progression can be slowed but not reliably reversed.

The other ideas don’t fit: chronic rejection does not occur within minutes to 48 hours—that would be acute or hyperacute rejection, which happens much sooner after transplant. Increasing drug therapy to reverse chronic rejection is usually ineffective because the damage from fibrosis and vascular changes is not readily reversible. And chronic rejection is not exclusive to the liver; it can affect kidney, heart, lung, and other transplanted organs as well.