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Samantha L Heller1, Yiming Gao1

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Summary
This summary is machine-generated.

Lobular neoplasia (LN), including atypical lobular hyperplasia (ALH) and lobular carcinoma in situ (LCIS), has variable management due to differing upgrade rates. Radiologic-pathologic correlation is crucial for appropriate diagnosis and treatment of LN.

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Area of Science:

  • Breast pathology
  • Radiology
  • Oncology

Background:

  • Lobular neoplasia (LN) encompasses atypical lobular hyperplasia (ALH) and lobular carcinoma in situ (LCIS).
  • Management of LN is inconsistent, influenced by institutional practices and evolving literature on upgrade rates to malignancy.
  • Understanding LN subtypes, like pleomorphic and florid LCIS, is critical as they have distinct natural histories and upgrade potentials.

Approach:

  • This review synthesizes imaging features and histopathologic characteristics of ALH, classic LCIS, and LCIS variants.
  • It examines historical shifts in understanding LN that contribute to management confusion.
  • The importance of radiologic-pathologic correlation for guiding management decisions after percutaneous biopsy is emphasized.

Key Points:

  • Variability in LN management stems from diverse literature findings on malignancy upgrade rates and changing natural history perceptions.
  • Distinct LN variants, such as pleomorphic and florid LCIS, exhibit different behaviors and upgrade risks.
  • Accurate management of LN necessitates meticulous correlation between imaging findings and histopathologic diagnoses.

Conclusions:

  • Radiologic-pathologic correlation is essential for appropriate management of lobular neoplasia diagnosed on percutaneous biopsy.
  • This review clarifies the imaging and histopathologic features of LN, addressing historical context and management implications.
  • Understanding both short-term outcomes (upgrade rates, surgical results) and long-term breast cancer risk associated with LN is vital.