Granular cell tumor in breast: a case report.

Area of Science:

• Oncology
• Pathology

Background:

• Granular cell tumors (GCTs) are rare soft tissue neoplasms, with malignant forms accounting for less than 1%.
• While commonly found in the tongue, GCTs can rarely affect the female breast, initially misclassified as myogenic lesions (myoblastomas).
• Current understanding suggests GCTs originate from peripheral nerve cells, such as Schwann cells or their precursors, based on immunohistochemical findings.

Observation:

• A case report details a 52-year-old premenopausal woman with a history of gynecologic cancer and familial oncologic history.
• The breast tumor presented with mammographic, ultrasound, and clinical characteristics suggestive of malignancy.
• The tumor was managed using local anesthesia, highlighting an unusual approach.

Findings:

• Histopathologic examination and immunohistochemical studies are essential for accurate diagnosis.
• Distinguishing GCT from malignant breast carcinoma is critical due to overlapping clinical and imaging features.
• This case underscores the importance of considering GCT in the differential diagnosis of breast masses.

Implications:

• Increased awareness of GCT in breast pathology is necessary for clinicians and radiologists.
• Proper diagnostic procedures, including histopathology and immunohistochemistry, are vital for correct GCT identification.
• This case contributes to the understanding of rare breast tumors and diagnostic challenges.