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CASE REPORT
Mixed adenoneuroendocrine carcinoma of the urethra

Abstract

Mixed adenoneuroendocrine carcinoma (MANEC) is a rare tumour found predominantly in the gastrointestinal tract. Comprising adenocarcinomatous and neuroendocrine components, MANEC have been reported in the bladder. We report the first case to our knowledge of a MANEC arising in the urethra. A 62-year-old woman presented with a suburethral mass. Initial excision of the mass revealed it to be a MANEC. Immunohistochemistry staining was positive for CK20 and synaptophysin associated with neuroendocrine tumours. Cross-sectional imaging ruled out metastases and the patient underwent radical urethrectomy, vaginal reconstruction and Mitrofanoff urinary diversion. The patient declined adjuvant chemotherapy and remained under regular surveillance. MANECs are uncommon tumours and treatment was therefore guided by expert opinion. A multidisciplinary approach is essential with the early involvement of surgeons, oncologists, histopathologist, radiologist and neuroendocrine specialists.

  • urology
  • surgical oncology
  • urological cancer
  • chemotherapy
  • pathology

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