Fig. 1

Clinical and radiological features of ENKTL-Breast (Case 1). a A CT scan showed that the lesion presented as a soft tissue density mass with a diameter of 6.6 cm in the right breast with unclear boundaries. b The right breast was significantly swollen and enlarged, and the nipple was indented. The mass located below the areola was partially excised for diagnosis (surgical incisions are apparent around the areola). c PET-CT showed increased F-FDG uptake by the breast lesion and ipsilateral axillary lymph node (stage IE)