A Case Report of Ruptured Malignant Neuroendocrine Tumor of Kidney, an Extraordinary Presentation

Chalairat Suk-ouichai MD*, Samrerng Ratanarapee MD**, Tawatchai Taweemonkongsap MD*, Chaiyong Nualyong MD*

Affiliation : * Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand ** Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand

We report the case of a 51-year-old Thai female presented with right abdominal mass with pain and anemia. The radiographic findings showed ruptured renal mass. She underwent radical nephrectomy and the pathological report was malignant neuroendocrine tumor. Palliative chemotherapy was administered. The patient passed away three months after the operation. Renal neuroendocrine tumors are rare. Moreover, ruptured renal tumors are very rare. They are usually considered to be angiomyolipoma or renal cell carcinoma. Poor differentiation and rupture at presentation are aggressive features of tumors. To the best of our knowledge, this is the first case report of ruptured renal malignant neuroendocrine tumor.

Keywords : Kidney neoplasms, Neuroendocrine tumors, Rupture

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