Atypical carcinoid presenting as dumb-bell-shaped tumour in the normal kidney.
Carcinoid tumours are low-grade malignant neoplasms with neuroendocrine differentiation and occur frequently in the gastrointestinal and respiratory tracts. Primary carcinoid tumours of the kidney are rare and a majority of these tumours occur in anomalous kidney and exhibit typical renal carcinoid morphology. We reported a middle-aged man with primary atypical carcinoid tumour occurring in a normal kidney. The patient was diagnosed as having renal cell carcinoma owing to a lack of neuroendocrinal clinical features. Immunohistochemical staining of the nephrectomy specimen helped in the diagnosis of atypical renal carcinoid.
Department of Pathology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
Ritu
R
Verma
Pallav
P
Gupta
D000328:Adult; D002276:Carcinoid Tumor / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D007680:Kidney Neoplasms / Q000175:diagnosis* / Q000601:surgery; D008297:Male; D009392:Nephrectomy; D014057:Tomography, X-Ray Computed