Primary osteogenic sarcoma of the breast

Area of Science:

• Oncology
• Pathology
• Surgical Oncology

Background:

• Primary extra-osseous osteogenic sarcoma (ESOS) is rare, with breast occurrence being exceptionally uncommon.
• ESOS in the breast can develop from osseous metaplasia in existing neoplasms or de novo from soft tissues.
• Distinguishing primary breast ESOS from secondary involvement of the breast from underlying bone is critical.

Purpose of the Study:

• To report a rare case of primary osteogenic sarcoma of the breast.
• To emphasize the diagnostic challenges and management of this rare breast malignancy.
• To contribute to the limited literature on primary breast osteosarcoma, particularly from Nigeria.

Main Methods:

• Clinical diagnosis of a left breast mass initially suspected as carcinoma.
• Histological examination of core-needle biopsy revealing chondroblastic and osteoblastic stromal cells, confirming osteogenic sarcoma.
• Surgical management included modified radical mastectomy followed by latissimus dorsi musculocutaneous flap reconstruction for chest wall defect.

Main Results:

• Histology confirmed primary osteogenic sarcoma of the breast, excluding secondary involvement of ribs or sternum.
• The patient underwent mastectomy and flap reconstruction due to significant skin deficit.
• The patient unfortunately died six months post-surgery, indicating an aggressive disease course.

Conclusions:

• Primary osteogenic sarcoma of the breast is a rare diagnosis confirmed by histology.
• This represents the second documented case of primary osteogenic sarcoma of the breast originating from Nigeria.
• Accurate diagnosis and timely management are crucial for this rare and aggressive breast cancer.