An Unusual Case of Invasive Encapsulated Papillary Carcinoma of the Breast: A Case Report.

Papillary carcinoma of the breast is a rare type of breast malignancy, making up less than 2% of breast cancers, and only some are encapsulated papillary carcinoma. Usually, EPC are low-grade luminal like tumors. The authors report a case of a 50-year-old female with the diagnosis of an unusual high-grade triple negative encapsulated papillary carcinoma with an area of invasive papillary carcinoma and negative axillary lymph nodes.

Neoplasm of uncertain behaviour of the breast-a retrospective study in a breast unit.

Introduction: Breast lesions include a heterogeneous group of entities with variable clinical behaviour and morphological presentation, mostly classified as benign or malignant, with predictable behaviour. However, there are lesions with clinical, breast imaging and/or biopsy characteristics that do not clarify their nature. These lesions have an uncertain behaviour regarding their malignant potential at diagnosis.