Abstract
Mucinous Tubular and spindle cell carcinoma is an unusual kidney tumour.
It was defined in the 2004 World Health Organization classification, for
the first time, as a new entity. It is characterized by its indolent
behaviour. We report the case of an 80-year-old woman diagnosed
incidentally with a left renal mass on an abdominal computed tomography
scan. The patient underwent an enlarged left nephrectomy.
Macroscopically, it was a fairly well-defined nodular formation,
grayish-white with ocher-yellow foci. Histological examination found
tubular formations merging with bland spindle cells and a mucinous
stroma. Tumour cells express CK7 and AMACR. The tumour was classified
pT1N0M0. The outcome was favourable, free of recurrence or complications
after eight months of follow-up.