Juan Carlos González Matos, Juan Jesús Gómez Herrera, Pilar Ortega de La Obra
Oncocytomas are benign tumors, with the classic stellate scar found in up to a third of cases, mainly in large ones. We present the case of a 69-year-old man with a palpable, mobile, and painless mass on the right flank, where abdominal ultrasound and abdominal computed tomography detected the presence of a solid right kidney lesion with a central stellate area in the sinus.
Postoperative histological analysis confirmed the presence of oncocytoma with a central stellate scar. Biopsy may not be useful to distinguish this entity from renal carcinoma, surgery being necessary for definitive confirmation of the diagnosis of oncocytoma.
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