Extra-Gastrointestinal Stromal Tumor of Prostate

Year 2017, Volume: 34 Issue: 2, 168 - 171, 01.03.2017

Demet Etit Haldun Kar Neşe Ekinci Ahmet Emre Yenipazar Fulya Çakalağaoğlu

Abstract

Background: Extra-gastrointestinal stromal tumor is
defined as a mesenchymal neoplasm arising from soft
tissues outside the gastrointestinal tract. Prostatic extragastrointestinal
stromal tumor has rarely been noted.
Case Report: A 56 year-old man presented with pain
in the anal region. A digital rectal examination revealed
that the prostate was markedly enlarged with a smooth,
bulging surface. Computerized tomography images
showed a 6 cm heterogeneous, infiltrative tumor within
the prostate gland extending to the trigon of the bladder,
left seminal vesicle and rectum. The tru-cut biopsy of
the prostate was reported as leiomyoma. It was decided
to perform surgery and the masses were easily and
completely removed from the adjacent structures. The
case was reported as extra-gastrointestinal stromal tumor
within the intermediate- risk category with free surgical
margins. Four years after the surgery, a locoregional
failure was observed and treated with imatinib.
Conclusion: Stromal tumor, although rare, should be
considered in the differential diagnosis in patients with
an enlarged prostate.

Keywords

Extra gastrointestinal stromal tumor, prostate, gist

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