- Research Article
- 10.21037/abs-25-36
Case report of a rare large granular cell tumor of the breast extending to the thoracic wall: surgical treatment and immediate breast reconstruction
- Dec 01, 2025
- Annals of Breast Surgery
- Markos Antonopoulos + 6 more +6
Background: Granular cell tumors (GCTs) are rare, usually benign tumors arising anywhere in the body. Breast GCTs are reported to be even rarer and small in size, with most cases in literature reporting approximately 2–4 cm in diameter. The objective of this case report is to present a multi-disciplinary surgical strategy and approach to a rare case of large GCT located in the breast, requiring wide resection, chest wall and breast reconstruction. Case Description: We present the case of a 70-year-old female patient who presented with a self-palpated right breast mass. Computed tomography (CT) and magnetic resonance imaging (MRI) revealed a 5.1 cm × 3.1 cm × 5.2 cm mass on her right breast, invading the pectoralis major muscle and in direct contact with the anterior thoracic wall. Open surgical biopsy confirmed it to be GCT. Surgical treatment involved multiple surgical teams and included right breast nipple sparring mastectomy en bloc with the overlying breast quadrant, pectoralis major muscle and the underlying 4th and 5th rib in contact with the mass. Chest reconstruction was achieved with a Gore-Tex mesh, while immediate breast reconstruction was performed with a silicone implant covered with a pedicled musculocutaneous latissimus dorsi flap. There were no clinical concerns up to the 1 year follow-up, while three-dimensional (3D) chest CT confirmed the integrity of the chest wall reconstruction. Conclusions: This case presented a challenge due to the location and size of the mass requiring a multi-disciplinary approach, from the initial differential diagnosis process to the surgical excision and immediate reconstruction involving three surgical specialty teams in the same operation.
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