A Rare Case of Lobular Carcinoma in Situ Within a Fibroadenoma

Fui Tin Pang (1), Anat Kornecki (2), Kalan Lynn (3), Sze Yuen Lee (4)
(1) Department of Radiology, Hospital Queen Elizabeth II, Sabah, Malaysia, Malaysia,
(2) Department of Medical Imaging, Western University, Canada,
(3) Lawson Health Research Institute, St Joseph’s Health Care London, Canada,
(4) Department of Radiology, Hospital Segamat, Johor, Malaysia, Malaysia

Abstract

Background: Fibroadenomas (FAs) are common benign breast tumors which account for 68% of all breast masses. They can be divided into simple and complex FAs. Though unusual, FAs can harbor invasive or in situ carcinomas, as well as high risk lesions such as lobular carcinoma in situ (LCIS) as we present in this case report.
Case Presentation: In this case report, we are presenting a rare case of LCIS within a FA with a brief description of presentation, classification and radiological features.
Conclusion: Carcinomas within FAs remain a diagnostic challenge. Despite being considered benign, FAs should still be closely monitored by ultrasound (US) as they can still harbor in situ or invasive carcinomas or high-risk lesions, including LCIS. Radiologists should always be aware and consider these as part of their differential diagnosis whenever benign looking masses have atypical features or presentation. The current management of LCIS detected within FA is still similar to LCIS found elsewhere in the breast.

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Authors

Fui Tin Pang
pangfuitin@gmail.com (Primary Contact)
Anat Kornecki
Kalan Lynn
Sze Yuen Lee
Author Biographies

Fui Tin Pang, Department of Radiology, Hospital Queen Elizabeth II, Sabah, Malaysia

Consultant Breast Radiologist, Department of Radiology, Hospital Queen Elizabeth II, Sabah, Malaysia

 Clinical Fellow, St Joseph’s Health Care London, Ontario, Canada

Anat Kornecki, Department of Medical Imaging, Western University

Associated Professor, Director of Breast Imaging, Department of Medical Imaging, Western University.

Breast Imaging Lead, Southwest Regional Cancer Program, St Joseph’s Health Care London, Ontario, Canada

Kalan Lynn, Lawson Health Research Institute, St Joseph’s Health Care London

Lawson Health Research Institute, St Joseph’s Health Care London, London Health Sciences Centre

Sze Yuen Lee, Department of Radiology, Hospital Segamat, Johor, Malaysia

Radiologist, Department of Radiology, Hospital Segamat, Johor, Malaysia

1.
Pang FT, Kornecki A, Lynn K, Lee SY. A Rare Case of Lobular Carcinoma in Situ Within a Fibroadenoma. Arch Breast Cancer [Internet]. 2022 Jan. 23 [cited 2024 Apr. 14];9(1):119-22. Available from: https://archbreastcancer.com/index.php/abc/article/view/432

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