Granular cell tumors (GCT) are rare soft tissue tumors. Although it isfrequently seen in the upper extremity, it can be seen anywhere in thehuman body. The majority of tumor cases are benign and approximately2% are malignant. It is seen in the breast at a rate of 5-8%. They presentwith a slow growing, painless, mobile mass. The definitive diagnosis ismade histopathologically and the treatment is wide excision. A 75-yearold woman presented with an ulcerated exudative mass in the right axilla.Mastectomy and axillary dissection were performed by general surgery 8months ago for BIRADS 3 mass that was determined on mammographyin the right breast. Breast specimen was identified as a phyllodestumor. GCT was detected in five of thirty lmph nodes in the axilla.Incisional biopsy was performed on the axillary mass. Histopathologicalmeasurements showed S-100 and CD68 positivity, eosinophilic stainingin tumor cells and pleomorphic nuclei with marked nucleolus. The tumorwas removed with wide excision and the defect area was closed witha splint thickness skin graft. The pathological measurements revealedthat the GCT in the axilla was not a breast metastasis, it was actuallymalignant GCT which was originated from skin. Ki-67 proliferation indexwas found as 10%. Surgical margins were seen as tumor free. There wereno complications in the postoperative follow-up. GCTs in the axilla aregenerally seen as a result of breast metastasis and the vast majority arebenign. Malignant skin-derived GCT is a rare case.