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Breast cancer is known to metastasise to different organs in the body, but an initial presentation of breast cancer with loin pain secondary to a metastatic renal mass is extremely rare. We report a 58-year-old woman who presented with recurrent left loin pain due to a metastatic deposit of invasive lobular carcinoma of the breast. The detection of a renal mass on computed tomography led to the assumption of a renal pelvic malignancy. The diagnostic dilemma posed by the detection of a breast mass during staging and the usefulness of immunohistochemistry in the confirmation of diagnosis are discussed.


Breast Lobular carcinoma Metastasis Renal Immunohistochemistry Case Report Oman.

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Al-Jarrah, A., Taranikanti, V., Sawhney, S., Furrukh, M., Al-Hosni, M., Saparamadu, P. A. M., & De Silva, M. V. C. (2013). Metastatic Invasive Lobular Carcinoma of the Breast Masquerading as a Primary Renal Malignancy. Sultan Qaboos University Medical Journal, 13(3), 453–455. Retrieved from

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