Undifferentiated Pleomorphic Sarcoma Mimicking Breast Implant-Associated Anaplastic Large Cell Lymphoma

Area of Science:

• Oncology
• Pathology

Background:

• Breast implant augmentation is generally safe, with rare complications including rupture, capsular contracture, and malignancies.
• Breast implant-associated malignancies, such as anaplastic large cell lymphoma (ALCL) and carcinomas, are uncommon.
• Mesenchymal tumors associated with breast implants are extremely rare, with only eight cases of sarcomas reported previously.

Observation:

• A rare case of silicone breast implant-associated undifferentiated pleomorphic sarcoma (UPS) is presented.
• The initial presentation and imaging findings of this sarcoma overlapped significantly with ALCL.
• The patient's condition was initially misdiagnosed as ALCL due to this clinical and radiological similarity.

Findings:

• This report details the morphological and molecular characteristics of the BIA-UPS.
• The study reviews existing literature on breast implant-associated sarcomas.
• The importance of considering BIA-sarcoma in ALCL-negative effusions is emphasized.

Implications:

• Accurate diagnosis of BIA-sarcomas is crucial due to their potential for local aggression.
• Distinguishing BIA-UPS from ALCL is essential for appropriate treatment and patient management.
• Increased awareness and consideration of BIA-sarcoma are needed for recurrent, ALCL-negative breast implant effusions.