Quiz. Correct answer to the quiz. check your diagnosis Primary carcinoid tumour in horseshoe kidney

Abstract

Primary renal carcinoid tumours are extremely rare. To date, approximately60caseshavebeenreported,mostlyascasereportswithonlyfewseriesnoted.Thepathogenesisofthistumourisuncertainbecauseneuroendocrinecellsarenotfoundinnormaladultrenalparenchyma.Wereporta caseofprimaryrenalcarci-noidoccurringina horseshoekidneyina 66-year-oldpatient.A clinical,histolog -icalandimmunohistochemicalpictureofthistumourispresented.