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A 59-year-old male patient was admitted to the emergency room with febrile right flank pain. The computed tomography scan and the magnetic resonance imaging had objectified lesion image occupying the upper half of the right kidney, measuring 82 mm, suggesting an infectious origin without excluding the infected tumor. He was put under antibiotics. A percutaneous biopsy revealed renal cell carcinoma with suppurative tumor necrosis. He underwent a right radical nephrectomy. The histopathological study revealed a collision tumor of papillary, chromophobe renal cell carcinoma and sarcomatoid dedifferentiation. It is the second case reported in English literature to date.

Solitary extramedullary plasmacytoma (EMP) involving the adrenal gland is an extremely rare malignancy. We report a case of a solitary adrenal plasmacytoma in an HIV-positive 50-year-old woman on antiretroviral therapy who presented with a rapidly progressing lumbar left masse. A CT scan objectified a locally advanced left adrenal mass measuring 135mm long axis. A biopsy was taken, and the histopathology with the immunohistochemical study objectified an adrenal gland plasmacytoma. The skeletal survey and the sternal suction biopsy did not show any abnormalities. The diagnosis of a solitary EMP of the adrenal gland was made. There are only 10 cases of solitary adrenal plasmacytoma with only one case associated with an HIV-positive patient reported in the literature. Therefore, this paper is aimed at presenting the second case of an HIV-positive patient diagnosed with solitary adrenal plasmacytoma.

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