What Happens After an Abnormal Screening Result?

Maybe a letter or a portal message says your routine screening result is "abnormal". Maybe it says the result needs "further evaluation". Either one can make your heart drop. It is natural to feel a surge of worry.

But keep one medical fact in mind: an abnormal screening result is NOT a cancer diagnosis.

Screening tests are built to flag even small changes. They catch tiny shadows, dense tissue, cysts, or small cell changes. That lets specialists take a closer look. Many follow-up tests find something benign, meaning not cancer. NCI notes that false-positive results can cause worry and lead to more tests.

This page explains what happens next for common screening tests and what you can do today.

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Representative Story Disclosure
This is a representative story created from common experiences described by patients and caregivers. It is not the story of one identifiable person, and individual experiences can differ substantially.

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Elena is a 50-year-old accountant. Her imaging center called 4 days after her annual screening mammogram. The receptionist said: "The radiologist noted an asymmetry on your left breast and would like you to come back for a diagnostic mammogram and ultrasound."

Elena spent the weekend terrified that she had breast cancer. She avoided talking to her family. She didn't want to cause panic.

On Tuesday, Elena went to her diagnostic appointment. The technologist took special magnified X-ray views of the left breast, then a targeted ultrasound. Twenty minutes later, the radiologist met with Elena and showed her the screen: "The area that looked suspicious on your screening mammogram is a simple, fluid-filled benign cyst. Cysts are completely harmless and require no treatment."

Elena exhaled a huge sigh of relief.

Elena said: "I spent 4 days assuming the worst. Learning that some call-backs turn out to be harmless cysts taught me that 'abnormal' just means taking a closer look."

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Routine Screening Test (Asymptomatic Population)
        ↓
Abnormal Finding Detected (Shadow, Density, Cyst, Microcalcification)
        ↓
Diagnostic Follow-up Scheduled (Targeted Ultrasound, 3D Scan, or Biopsy)
        ↓
Definitive Diagnosis Established:
- Not cancer (for example a cyst or non-cancerous polyp)
- Precancerous changes (can be treated before they become cancer)
- Cancer confirmed (your team builds a treatment plan)

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The next steps depend on which screening test was abnormal.

Mammogram (breast screening call-back)

• What happens next: You are scheduled for a diagnostic mammogram (magnified views of the specific spot) and a targeted breast ultrasound.
• Common benign causes: Fluid-filled cysts, fibroadenomas, overlapping normal tissue, or dense breast tissue.

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2. Pap / HPV Test (Cervical Screening)

• What happens next: It depends on your age and your results. Your doctor may recommend repeating the test. Or they may perform a colposcopy, a detailed visual check of the cervix using a magnifying lens.
• Common benign causes: Minor inflammation, recent infection, or a transient HPV infection that the immune system clears naturally.

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Stool test or screening colonoscopy (colorectal)

• What happens next: If an at-home stool test (FIT/sDNA) is positive, a diagnostic colonoscopy is scheduled. It inspects the colon lining directly and removes any polyps.
• Common benign causes: Benign hyperplastic polyps, hemorrhoids, minor intestinal inflammation, or dietary factors.

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4. Low-Dose Chest CT (Lung Screening)

• What happens next: Your team looks at the size and shape of any lung nodule. Ask whether you need a repeat scan and when.
• Common benign causes: Scar tissue from prior mild lung infections (like pneumonia or histoplasmosis).

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1. Schedule Your Follow-Up: Call to book your diagnostic appointment as soon as you can. Ask how soon your team wants you seen.
2. Request Prior Records: Did you have earlier screening scans at another facility? Ask for those images to be sent to your new radiologist for direct comparison.
3. Bring a Support Person: Have a trusted friend or caregiver come with you to take notes while you talk with the doctor.
4. Focus on Facts: Remind yourself that an abnormal screen is a call for clarity, not a final answer.

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• Abnormal ≠ Cancer: false-positive results happen, and many call-backs are not cancer.
• Diagnostic tests pinpoint the cause: Diagnostic imaging and ultrasounds look at specific areas with high precision.
• Comparison helps: Prior images can help the radiologist compare changes.
• Prompt follow-up is empowering: Completing your follow-up visit delivers definitive answers and peace of mind.

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These are common questions after a call-back.

Why do screening tests trigger so many call-backs?

Screening tests are designed to be cautious. False positives are a known downside of screening. NCI notes they can cause worry and lead to more tests.

What should I bring to my diagnostic follow-up appointment?

Bring your ID, health insurance card, and a list of current medications. Bring any prior mammogram or scan CDs from other facilities. And bring a written list of questions.

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• Abnormal Mammogram: What Happens Next?
• Abnormal Pap or HPV Positive: What Now?
• Cancer Screening Overview
• What Happens After a Cancer Diagnosis?

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• National Cancer Institute (NCI): Understanding Cancer Screening Results (2025). https://www.cancer.gov/about-cancer/screening
• National Cancer Institute — Screening Tests
• National Cancer Institute — Breast Cancer Screening (PDQ) Patient Version
• U.S. Preventive Services Task Force — Breast Cancer: Screening (2024)