• Sao Paulo Med J · Mar 2019

    Case Reports

    Recurrence of retroperitoneal localized perivascular epithelioid cell tumor two years after initial diagnosis: case report.

    • Yasemin Benderli Cihan, Engin Kut, and Ali Koç.
    • MD. Radiation Oncologist, Department of Radiation Oncology, Kayseri Egitimve Arastirma Hastanesi, Kayseri, Turkey.
    • Sao Paulo Med J. 2019 Mar 1; 137 (2): 206208206-208.

    ContextPerivascular epithelioid cell tumors (PEComas) are rare mesenchymal tumors. Adjuvant radiotherapy and/or chemotherapy are administered according to the patient's clinical characteristics.Case ReportA 42-year-old female patient was operated to treat a retroperitoneal mass. The diagnosis was established as PEComa with benign behavior. Two years after the diagnosis, chest and abdominal computed tomography scans showed intra-abdominal recurrence and lymphangioleiomyomatosis in the lung. Treatment with everolimus was started. The disease stabilized in the third month of treatment, according to the response evaluation criteria in solid tumors.ConclusionPEComas are tumors with unpredictable behavior. Therefore, these patients require long-term follow-up, even in cases of correct diagnosis and benign PEComa.

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