What Causes a Lump Above a Cesarean Scar?

Finding a lump above a C-section scar can be a source of concern for many individuals. While the appearance of such a lump can be unsettling, many instances are due to common and benign processes related to surgical healing. This article provides general information on lumps that may form near a C-section scar, covering common explanations, other potential causes, and guidance on when to seek medical evaluation.

Common Explanations

A frequent reason for a lump above a C-section scar is the formation of scar tissue, such as hypertrophic or keloid scars. These develop when the body produces excessive collagen during healing. Hypertrophic scars are raised, firm, and reddish, remaining confined to the incision line. Keloid scars extend beyond the wound boundaries, forming a thickened, raised, and often itchy lump that can appear red or purple.

Fat necrosis is another common cause, occurring when fatty tissue is damaged during surgery, leading to a firm, palpable mass. This condition results from the death of fat cells and is generally benign, often resolving on its own. The lump may feel hard and lumpy, sometimes with enlarged hair follicles in the area. This process can take months or even years to become noticeable after the initial injury.

Suture granuloma is another possibility, where the body forms an inflammatory mass around unabsorbed surgical stitches. This reaction can present as a tender, often reddish nodule weeks to months after surgery. Although non-absorbable sutures are more commonly implicated, any suture material can cause a reaction. The incidence is rare with modern techniques.

Collections of fluid (seromas) or blood (hematomas), respectively, can also manifest as lumps near the incision site. Hematomas involve blood pooling in tissues, often appearing with discoloration similar to a bruise and feeling tender or swollen. Seromas are accumulations of clear fluid. These typically resolve spontaneously as the body reabsorbs the fluid or blood.

Other Potential Causes

An endometrioma, also known as scar endometriosis, involves endometrial tissue, which normally lines the uterus, growing within the C-section scar. A hallmark symptom is cyclical pain in the lump that often worsens with menstruation, alongside tenderness and a palpable mass. The lump can vary in size and may be discolored or bleed in sync with the menstrual cycle.

An incisional hernia can also form where abdominal tissue, such as fat or intestine, pushes through a weakened area in the abdominal wall muscles at or near the scar. This creates a bulge that may become more noticeable when coughing, straining, or standing. While often painless, an incisional hernia can cause discomfort and may develop months or years after surgery.

Infection at the surgical site can lead to an abscess, presenting as a painful, warm, and red lump. This occurs when bacteria enter the incision, leading to swelling and a collection of pus. Other signs of infection include discharge from the wound, increasing tenderness, and fever. Abscesses can form within the first weeks after delivery, but in rare cases, they may appear years later.

When to Consult a Doctor

It is advisable to consult a healthcare professional if a lump above a C-section scar is noticed, especially if it exhibits certain characteristics:

  • Rapid growth or changes in the lump’s size or shape warrant prompt medical attention.
  • Increasing pain, tenderness, redness, or warmth around the lump or incision site are concerning signs.
  • Any pus or discharge from the lump or incision, or the development of a fever, suggests a possible infection.
  • A lump that feels hard, fixed, or irregular in shape should be assessed.
  • If the lump is accompanied by digestive issues like nausea, vomiting, or constipation, particularly with increased pain, it may indicate a hernia.
  • Cyclical pain associated with the lump, especially if it worsens during menstruation, points towards conditions like endometrioma.
  • Any personal concern or anxiety about the lump is a valid reason to seek professional medical advice.

Medical Evaluation and Care

When evaluating a lump above a C-section scar, a doctor typically begins with a physical examination and a detailed medical history review. This assessment helps understand the lump’s characteristics, including its size, texture, mobility, and any associated pain or symptoms. The doctor will also inquire about the timeline of its appearance and any changes over time.

To investigate the lump, various diagnostic tools may be employed. Ultrasound is commonly used for soft tissue lumps, providing images that help differentiate between fluid collections, scar tissue, or other masses. More detailed imaging like MRI or CT scans may be recommended for a comprehensive view of the abdominal wall and underlying structures. If the lump’s nature is unclear, a biopsy might be necessary for laboratory analysis.

Treatment for a lump near a C-section scar varies depending on the underlying diagnosis. For benign conditions like small scar tissue or resolving hematomas, observation may be sufficient if symptoms are minimal. Pain management can be implemented for symptomatic benign lumps. Surgical removal might be considered for symptomatic scar tissue, endometriomas, hernias, or if a suspicious mass is identified. If an infection is present, antibiotics are typically prescribed, and drainage of an abscess may be required.