Early Local Recurrence as Invasive Micropapillary Carcinoma after Skin-Sparing Mastectomy with Immediate Deep Inferior Epigastric Perforator Flap Reconstruction for Ductal Carcinoma <i>in situ</i>

INTRODUCTION: Skin-sparing mastectomy with immediate breast reconstruction has been widely adopted to achieve both oncological safety and favorable cosmetic outcomes. Local recurrence after this procedure is generally considered a late event, and early postoperative recurrence at a brief period is uncommon. The mechanisms underlying early local recurrence after skin-sparing mastectomy, particularly in patients with ductal carcinoma in situ, remain incompletely understood. We report a rare case of early local recurrence as invasive micropapillary carcinoma following skin-sparing mastectomy with immediate autologous reconstruction for extensive ductal carcinoma in situ.