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<p>Breast lymphatic malformations are rare benign slow-flow vascular anomalies, usually presenting as localized cystic lesions amenable to limited excision. Diffuse breast involvement with extension into adjacent compartments is exceedingly uncommon. We report a 21-year-old woman presenting with progressive enlargement of the right breast over 10 months, with a history of recurrent swellings since childhood. Ultrasonography demonstrated a multiloculated cystic lesion involving the right breast and axilla. Magnetic resonance imaging revealed a large (24 × 17.5 × 9.5 cm) multiloculated cystic lesion replacing the breast parenchyma with extension into subcutaneous, intermuscular, axillary, intercostal, and supraclavicular regions. Given the diffuse nature, prior recurrence, and extensive infiltration, right total mastectomy was performed. Histopathology confirmed lymphatic malformation. This case highlights the role of MRI in delineating disease extent and the need for definitive surgical management in selected patients with extensive, recurrent disease who present late.</p>

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Giant Diffuse Lymphatic Malformation of the Breast with Trans-Spatial Extension Managed by Total Mastectomy: A Case Report

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Sumit Sharma,
  • Satyajit Kundu,
  • Subashini Harikrishnakumar,
  • Ishita Laroiya

摘要

Breast lymphatic malformations are rare benign slow-flow vascular anomalies, usually presenting as localized cystic lesions amenable to limited excision. Diffuse breast involvement with extension into adjacent compartments is exceedingly uncommon. We report a 21-year-old woman presenting with progressive enlargement of the right breast over 10 months, with a history of recurrent swellings since childhood. Ultrasonography demonstrated a multiloculated cystic lesion involving the right breast and axilla. Magnetic resonance imaging revealed a large (24 × 17.5 × 9.5 cm) multiloculated cystic lesion replacing the breast parenchyma with extension into subcutaneous, intermuscular, axillary, intercostal, and supraclavicular regions. Given the diffuse nature, prior recurrence, and extensive infiltration, right total mastectomy was performed. Histopathology confirmed lymphatic malformation. This case highlights the role of MRI in delineating disease extent and the need for definitive surgical management in selected patients with extensive, recurrent disease who present late.