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Petracco et al. J Cancer Metastasis Treat 2016;2:388-90 Journal of
DOI: 10.20517/2394-4722.2016.21
Cancer Metastasis and Treatment

www.jcmtjournal.com
Case Report Open Access

A small solitary fibrous tumor of the

bladder

Guido Petracco, Carlo Patriarca

Division of Surgical Pathology, Azienda Ospedaliera Sant’Anna, Via Ravona, San Fermo d/B, 22020 Como, Italy.
Correspondence to: Dr. Carlo Patriarca, Division of Surgical Pathology, Azienda Ospedaliera Sant’Anna, Via Ravona, San Fermo d/B, 22020
Como, Italy. E-mail: carlo.patriarca@hsacomo.org

How to cite this article: Petracco G, Patriarca C. A small solitary fibrous tumor of the bladder. J Cancer Metastasis Treat 2016;2:388-90.

Dr. Carlo Patriarca served as a Staff Pathologist in Genova and Milan and now he serves as Director of the
Division of Anatomic and Surgical Pathology of S. Anna Hospital, Como, Italy. He focused his past interests on the
role of adhesion molecules in oncology and his present interests on uropathology.

ABSTRACT
Article history: The authors present a case of histologically benign and incidentally discovered millimetric
Received: 28-04-2016 solitary fibrous tumor of the bladder, invisible to radiologic imaging and clinically benign.
Accepted: 06-07-2016 The case came to our attention because of repeated episodes of renal colic. As opposed to
Published: 30-09-2016 the present case, solitary fibrous tumor are generally discovered when they reach certain
dimensions, being slow-growing, painless masses. Such a tumor of the bladder is a very
Key words: rare finding, with less than 20 cases reported, and it has yet to be described with such a
Solitary fibrous tumor, small size. The main differential diagnoses are discussed. Such tumors with histological
bladder, features of malignancy are also described in the literature. However, the present case had
small a bland appearance so a conservative approach with an excision was adopted. No signs of
recurrence are present at follow-up.

INTRODUCTION rare finding. We present one case of bladder primary
SFT of a few millimeters, incidentally discovered.
Solitary fibrous tumor (SFT) is a rare type of
mesenchymal tumor described in the years originally CASE REPORT
as hemangiopericytoma, later as SFT. [1-3] A malignant
histology has been also described in different organs. A 72-year-old male patient with repeated episodes of
[4]
Nevertheless, SFT involving the urinary bladder is a very renal colic was admitted to the emergency room of our
Quick Response Code:
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