Acconcia A, Miracco C, Mattei F M, deSanti M M, Del Vecchio M T, Luzi P
Department of Urology, University of Siena, Italy.
Urology. 1988 Jun;31(6):517-20. doi: 10.1016/0090-4295(88)90221-x.
We present a case of primary renal carcinoid tumor with the appearance of type B carcinoid with trabecular and ribbon-like structure. All the immunohistochemical stains were negative. Electron microscopy revealed numerous cytoplasmic granules with polar distribution and masses of intermediate microfilaments. We believe only 8 cases have been reported in the literature.