Nodular fasciitis in male breast- A case report

Nodular fasciitis of the breast is a particularly rare manifestation of this uncommon benign mesenchymal proliferation, which primarily affects soft tissues, with a predilection for the upper extremities. Arising from fibroblastic hyperplasia, nodular fasciitis in the breast presents a diagnostic conundrum due to its ability to mimic other benign and malignant breast lesions. This study investigates the clinical presentation, diagnostic workup, and potential treatment modalities for nodular fasciitis. We present a rare case of a 38-year-old male patient who presented with a rapidly growing painless mass in his right breast. Upon clinical examination, a well-circumscribed, firm, mobile mass was identified. Ultrasonography revealed a hypoechoic lesion with a well-defined margin and posterior acoustic enhancement. Given the equivocal imaging findings, an excision biopsy was performed. Histopathological examination including immunohistochemistry confirmed the diagnosis of nodular fasciitis. Thus, the case highlights the importance of maintaining a high index of suspicion for nodular fasciitis, particularly within the differential diagnosis for male breast masses like fibroadenoma and phyllodes tumors. Inclusion of this entity is essential to minimize unnecessary and potentially morbid surgical interventions