Introduction:

most kidney cancer patients present with synchronous metastatic disease. A review of the literature reveals cases where the diagnosis is based on muscle metastasis are exceptional.

Objective:

the study aims to present the clinical case of metastasis to the left deltoid muscle as the initial presentation of renal cell carcinoma.

Clinical case:

76 year old male patient who was operated upon diagnosis of tumour in the left deltoid region, the biopsy of which revealed muscle metastasis of clear cell renal cell carcinoma (RCC).

Computerized axial tomography evidenced a tumorous formation in the right kidney. The patient underwent right-sided nephrectomy that confirmed the primary tumour diagnosis.

Discussion:

diagnosis of muscle metastasis of clear cell renal cell carcinoma, being it the initial presentation of the disease, is often done by analysing the surgical resection piece or by means of a biopsy.

Despite treatment of metastasis is usually palliative, local control of the disease is only possible when tumour-free margins surgical resection is done, since other oncologic treatments have not proved effective.

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