Carta al editor (sin resumen)

Introduction: Peripheral primitive neuroectodermal tumor of the kidney (PNETk) is a very aggressive rare disease that mainly affects young men. Case report: A 19-year-old male patient with symptoms of abdominal pain, hematuria and a palpable mass, the tomography shows a large left renal tumor. Conventional radical nephrectomy was performed and sent for pathology study plus histochemistry, resulting in PNETk. The patient then continued his oncology management for chemotherapy initially. Conclusion: The PNETk that we describe represents the first case reported in our country, it constitutes a unique clinical entity due to its rarity, being a challenge to make a diagnosis and its behavior and management is still based on case reports due to its infrequency.

Renal cancer is a neoplasm with an incidence rate of 4,4% per 100 000 inhabitants worldwide; renal cell carcinoma accounts for 90% of malignant renal tumors. Recurrent urinary infections have a prevalence of 19% and constitute infections of at least two episodes in six months, or at least three episodes in a year. We present the case of a 25-year-old female patient who presented with recurrent urinary tract infections and who had a left renal tumor in a tomographic study. A radical nephrectomy was performed, whose surgical specimen confirmed pathological diagnosis of clear cell renal carcinoma. In young patients, renal carcinoma is an even more rare tumor, representing 8,7% of all patients diagnosed with renal cancer. Clinical suspicion of young women with infections should be promoted in the clinic recurrent urinary traumas requesting imaging tests, in order to guarantee an early diagno...