Abstract
Intra-cystic papillary carcinoma (CPIK) of the breast is a variant of intra-ductal carcinoma, the incidence of which is of the
order of 0.5% to 1% of breast cancers. It is a papillary lesion localized in a dilated or cystic milk duct. These lesions can be of
two types: either a single central lesion, referred to as intracystic papillary carcinoma; either multifocal lesions originating in
the lobules. Its anatomopathological aspect is characteristic, it must be differentiated from ductal carcinoma in situ or invasive
carcinoma, which are sometimes associated [1,2]. The prognosis for CPIK appears excellent in its isolated form, but taking
treatment is not clearly established, hence the risk of abusively treating such lesion. From this study about 1 case; we will recall
the diagnostic aspects, treatment, and development of this rare tumor.