Definition
Neoplasms occurring within the renal parenchyma showing neuroendocrine differentiation by morphology and immunohistochemistry.
Kidney neoplasms with neuroendocrine differentiation include:
Well-differentiated neuroendocrine tumor (carcinoid and atypical carcinoid tumor)
Small cell neuroendocrine carcinoma
Large cell neuroendocrine carcinoma
Clinical Features
Incidence
Neuroendocrine tumor in the kidney is an uncommon neoplasia. The most common neuroendocrine tumor in renal parenchyma is carcinoid (Lane et al. 2007; Hansel et al. 2007). For small cell carcinoma, primary tumor of renal pelvis and metastases should be rule out. Up to 20% of primary renal carcinoids have been reported in “horseshoe” kidneys.
Age
The majority of the cases have been reported in the fourth to seventh decade.
Sex
No gender predominance.
Site
No specific site in the kidney.
Treatment
Surgical treatment in patients with gross hematuria and abdominal pain
Outcome
The outcome depends on prognostic...
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References and Further Reading
Hansel, D. E., Epstein, J. I., Berbescu, E., et al. (2007). Renal carcinoid tumor: A clinicopathologic study of 21 cases. The American Journal of Surgical Pathology, 31, 1539–1544.
Lane, B. R., Chery, F., Jour, G., et al. (2007). Renal neuroendocrine tumours: A clinicopathological study. BJI International, 100, 1030–1035.
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Caliò, A., Segala, D., Martignoni, G. (2019). Neuroendocrine Tumors of the Kidney. In: van Krieken, J. (eds) Encyclopedia of Pathology. Encyclopedia of Pathology. Springer, Cham. https://doi.org/10.1007/978-3-319-28845-1_4863-1
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DOI: https://doi.org/10.1007/978-3-319-28845-1_4863-1
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