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Minerva Urol Nefrol. 2011 Mar;63(1):109-13.

The solitary fibrous malignant tumour of the kidney: clinical and pathological considerations on a case revisiting the literature.

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Department of Urology, Sondrio Hospital, Sondrio, Italy.


The solitary fibrous tumours (SFT) are rare spindle cell neoplasms which generally originate from the pleura; also described are cases of SFT in other locations, included the genital-urinary tract. Described in the ambit the kidney are 19 cases of SFT and such rarity of localisation makes rather unknown the histogenesis and the prognosis of the lesion. We report the case of a 72 year old lady who attended our Unit for a mass which was clinically palpable at the level of the left hemiabdomen. Following an abdominal ultrasound scan a neoformation was highlighted which a successive tomodensitographic test indicated as being of likely pertinence of the middle third of the left kidney; the mass had a diameter of approximately 19 cm. A radical nephrectomy has been conducted. The histological examen highlighted a solitary fibrous tumour: the presence of hypercellularity, of cellular pleiomorphism and of a high number of mitosis has led to a histopathological diagnosis of malignancy of the neoplasm under examination. Departing from this case a review of the literature is carried out. The SFT of the kidney can have an aggressive character and more the present has hystopathological characters and clinical results are still rather unknown.

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