Fibromatosis-like metaplastic carcinoma of the breast: A rare case report

Fibromatosis-like metaplastic carcinoma (FLMC) of the breast is an infrequent and inadequately elucidated variant of spindle cell carcinoma, a type of metaplastic breast carcinoma (MBC) comprising approximately 0.5-5% of all breast malignancies. [1]This rare epithelial breast cancer, reported only 68 times in two decades, often mimics benign fibromatous changes or reactive spindle cells post-biopsy, leading to a high risk of misdiagnosis.Despite its indolent histopathological appearance, its clinical behaviour can be aggressive, emphasizing the need for careful evaluation and advanced diagnostic methods. [2]We present the case of a 63-yearold woman with a mass in the left breast, emphasizing the clinical presentation, diagnostic challenges, histopathological features, and treatment approaches.This case highlights the importance of recognizing this rare subtype within the spectrum of breast malignancies.