Pituitary metastasis of a breast ductal adenocarcinoma

Pituitary metastases are rare, a primary tumor of the breasts or lungs are frequently found. The clinical picture is very variable, they can be accidental discovery or revealed by a pituitary dysfunction. The prognosis is generally poor and depends on the anatomopathological type. We report the observation of a patient with a pituitary metastasis of a breast cancer evolving for 4 years, the diagnosis was suspected in front of pituitary macroadenoma images, a transphenoidal endoscopic biopsy and an anatomopathological confirmation revealing an infiltrating breast adenocarcinoma. •Pituitary metastases are rare, a primary tumor of the breasts or lungs are frequently found.•The prognosis of the pituitary metastases is generally poor and depends on the anatomopathological type.•The clinical picture of the pituitary metastases is very variable, they can be accidental discovery or revealed by a pituitary dysfunction.