What is the muscle scar lump after appendectomy?
Nov 05, 2025
Source: Cainiu Health
Dr. Wang Lei
Introduction
In general, muscle nodules following appendectomy usually refer to localized indurations or scar tissue that form in the abdominal wall muscle layer during or after wound healing at the surgical incision site. It is important to avoid repeatedly pressing or rubbing the incision area post-surgery to prevent stimulation of excessive scar tissue growth. Keep the incision and surrounding skin clean and dry to avoid infection, which could impair healing.
In general, muscle scar masses after appendectomy refer to localized hard nodules or scar tissue that form in the abdominal muscle layer during or after wound healing at the surgical incision site. A detailed explanation is as follows:
Formation of a muscle scar mass after appendectomy primarily occurs because the surgery involves cutting through the abdominal wall muscles, causing damage to local muscle fibers. During the body's repair process, fibroblasts proliferate and secrete collagen protein, which accumulates at the injury site and gradually forms fibrous connective tissue. If prolonged local inflammation, excessive tissue repair, or the patient has a predisposition to scarring (scar-prone constitution), the collagen accumulation becomes more pronounced. This eventually leads to the development of a firm nodule or scar tissue within the abdominal muscle layer—known as a muscle scar mass.
In daily life, it is important to avoid repeatedly pressing or rubbing the incision area after surgery to prevent stimulating scar tissue overgrowth. Keep the incision and surrounding skin clean and dry to avoid infection that could impair healing. If significant pain, redness, swelling, warmth, or continuous enlargement of the scar mass occurs—especially if it affects daily activities—prompt medical evaluation is necessary to rule out any abnormal conditions.
