Primary lung cancer with metastasis to the ipsilateral breast-a case report

Abstract

The metastasis of extra-mammary malignancy to breast is extremely rare; literature reports the incidence between 0.4-1.3%. Primary sites include the contralateral breast, leukaemia, lymphoma, malignant melanoma, sarcoma, lung, prostate, ovary, colon and the stomach. Here we present a rare case in which lung cancer was found to metastasise to the breast. Initially the patient presented with chest symptoms and a left breast lump was detected clinically. The radiological and histological investigations confirmed the diagnosis of primary lung cancer with breast metastases. Prognosis of such cases is generally poor.

Breast Metastasis as a Presentation of Malignant Melanoma

“…Hence the contralateral breast is reported to be the most common source of primary cancer to metastasise to the breast. The other extra-mammary cancers known to metastasise to breast may include haematological malignancy malignant melanoma (MM), appendicular carcinoid, malignant mesotheliomas, epidermoid cervical carcinoma, renal, lung (19), gastric, pancreatic, rectal (20) ovarian (21), tongue, thyroid (22) and prostate carcinomas. Contrast-ingly, rhabdomyosarcoma is the most common cancer to metastasise to the breast in paediatric age group (23).…”