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  1. Atypical cells: Are they cancer? - Mayo Clinic

    Do atypical cells usually mean cancer? On occasion you may see a report from a Pap test or tissue biopsy stating "atypical cells present." This might cause you to worry that this means …

  2. Atypical teratoid rhabdoid tumor (ATRT) - Mayo Clinic

    Dec 18, 2025 · Atypical teratoid rhabdoid tumor (ATRT) is a rare, fast-growing brain or spinal tumor in children. Learn about its symptoms and treatment.

  3. Atypical hyperplasia of the breast - Symptoms and causes

    Learn how a diagnosis of atypical lobular hyperplasia or atypical ductal hyperplasia affects your risk of breast cancer and what you can do.

  4. Atypical antidepressants - Mayo Clinic

    Oct 4, 2019 · Atypical antidepressants ease depression by affecting chemical messengers (neurotransmitters) used to communicate between brain cells. Like most antidepressants, …

  5. Pap smear - Mayo Clinic

    Jul 20, 2024 · Atypical squamous cells of undetermined significance, also called ASC-US. Squamous cells are thin and flat and grow on the surface of a healthy cervix. This result …

  6. Atypical teratoid rhabdoid tumor (ATRT) - Mayo Clinic

    Dec 18, 2025 · Atypical teratoid rhabdoid tumor (ATRT) is a rare, fast-growing brain or spinal tumor in children. Learn about its symptoms and treatment.

  7. Atypical hyperplasia of the breast - Mayo Clinic

    Diagnosis Atypical hyperplasia of the breast is most often diagnosed during a breast biopsy. A breast biopsy is a procedure to remove a sample of breast tissue for testing. It's often done if …

  8. Atrial flutter ablation - Type - Mayo Clinic

    Feb 2, 2024 · Atrial flutter ablation Atrial flutter ablation is a treatment for a rapid, fluttering heartbeat. It uses heat energy to create tiny scars in an upper chamber of the heart. Heart …

  9. Atypical hyperplasia of the breast - Mayo Clinic

    Learn how a diagnosis of atypical lobular hyperplasia or atypical ductal hyperplasia affects your risk of breast cancer and what you can do.

  10. Atypical genitalia - Symptoms and causes - Mayo Clinic

    Aug 27, 2024 · Atypical genitalia, formerly called ambiguous genitalia, is a rare condition in which an infant's genitals don't appear to be clearly male or female on the outside.