Primary carcinoid tumour in horseshoe kidney

Area of Science:

• Oncology
• Urology
• Pathology

Background:

• Primary renal carcinoid tumors are exceptionally rare, with fewer than 60 reported cases.
• The exact pathogenesis remains unclear due to the absence of neuroendocrine cells in normal adult renal tissue.

Observation:

• A case of primary renal carcinoid tumor was identified in a 66-year-old patient with a horseshoe kidney.
• The tumor presented with specific clinical, histological, and immunohistochemical characteristics.

Findings:

• The study provides a detailed clinical, histological, and immunohistochemical profile of a primary renal carcinoid tumor.
• This case contributes to the limited understanding of renal carcinoid tumors, particularly in anomalous renal structures.

Implications:

• Further research into the pathogenesis of renal carcinoid tumors is warranted.
• This case highlights the importance of considering rare tumors in differential diagnoses, especially in patients with congenital renal anomalies.