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Related Experiment Videos

Mammographically Occult Breast Cancers.

Paul Ian Tartter1, Stephanie Weiss, Sharmila Ahmed

  • 1Departments of Surgery, Mount Sinai Medical Center, New York, New York; Departments of Radiology, Mount Sinai Medical Center, New York, New York.

The Breast Journal
|May 12, 2001
PubMed
Summary
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Mammographically occult breast cancers, though less common, are linked to diagnostic delays and more aggressive treatments. However, long-term survival rates free of recurrence and metastases were similar to visible cancers.

Area of Science:

  • Oncology
  • Radiology
  • Breast Cancer Research

Background:

  • A subset of breast cancers remain undetected by mammography.
  • Mammographically occult malignancies may present diagnostic challenges and impact patient outcomes.

Purpose of the Study:

  • To investigate the clinical implications of mammographic visibility in breast cancer patients.
  • To compare treatment strategies and recurrence rates between mammographically occult and visible breast cancers.

Main Methods:

  • Retrospective comparison of 813 breast cancer patients, with 91 (11%) classified as mammographically occult.
  • Analysis of patient demographics, tumor characteristics, treatment modalities, and recurrence rates.
  • Statistical evaluation including stepwise logistic regression and survival analysis over a minimum of 5 years.

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Main Results:

  • Mammographically occult cancers were associated with younger patients, lower body weight, and fewer pregnancies.
  • Nodal involvement was more frequent in occult malignancies (35% vs. 24%).
  • Diagnostic delays (>3 months) were higher for occult cancers (24% vs. 13%), leading to more adjuvant chemotherapy (63% vs. 41%).

Conclusions:

  • Mammographic visibility is a significant factor influencing diagnostic timelines and initial treatment intensity for breast cancer.
  • Despite delays and more aggressive therapy, mammographic visibility did not significantly impact long-term survival free of local recurrence or distant metastases.