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Aktuelle Urol. 2010 May;41(3):197-9. doi: 10.1055/s-0029-1224735. Epub 2010 Mar 4.

[Stromal tumour of uncertain malignant potential of the prostate (STUMP) - a case report].

[Article in German]

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Klinik und Poliklinik für Urologie, Universitätsklinikum Schleswig-Holstein (UKSH), Campus Lübeck.


A prostatic stromal tumour of uncertain malignant potential (STUMP) is a non-epithelial, mesenchymal spindle-cell tumour that can be classified as a specialised stromal tumour of the prostate. Although in most cases STUMP is not of an aggressive nature, occasional cases have been documented with an extension into adjacent tissues or recurrence after resection. A minority of cases develop a sarcomatous dedifferentiation.We report the case of a 53-year-old male with symptoms of febrile prostatitis. After consolidation we performed TUR-P due to urinary retention. Finally, we made the pathological diagnosis of prostatic STUMP. The patient is being seen -frequently in our clinic to take prostate biopsies to exclude a progression into a stromal sarcoma (active surveillance). After 13 months the STUMP is still detectable, but with no signs of sarcoma.

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