Abstract |
A 46-year-old man was found to have a mass in the pelvic cavity on computed tomography (CT) carried out for an examination for lower abdominal pain. Abdominal magnetic resonance imaging showed a mass which appeared to have hyposignals on both T1- and T2-weighted images. A positron emission tomography CT showed that the mass had a low maximum standardized uptake value (=1.4). Biopsy of the mass showed tumoral cells demonstrating a 'patternless pattern' characterized by a haphazard, storiform arrangement of short spindle or ovoid cells. Immunohistochemistry disclosed CD34 positivity and desmin and alfa-smooth muscle actin (SMA) negativity which supported the diagnosis of solitary fibrous tumor. Tumorectomy was performed. Grossly, the tumor was a large encapsulated mass with well limited margins weighing 67.7 g. Histology revealed a mass with no necrotic or hemorrhagic degeneration. On immunohistochemistry, the tumor cells were strongly positive for CD34 and they were negative for desmin and alfa-SMA. At six months of follow up, the patient was well and he had no signs of recurrence.
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Authors | Yosuke Sekii, Shinichiro Fukuhara, Akira Nagahara, Hiroshi Kiuchi, Yasushi Miyagawa, Norio Nonomura |
Journal | Hinyokika kiyo. Acta urologica Japonica
(Hinyokika Kiyo)
Vol. 61
Issue 5
Pg. 211-5
(May 2015)
ISSN: 0018-1994 [Print] Japan |
PMID | 26087824
(Publication Type: Case Reports, English Abstract, Journal Article, Review)
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Topics |
- Humans
- Male
- Middle Aged
- Multimodal Imaging
- Pelvic Neoplasms
(pathology, surgery)
- Positron-Emission Tomography
- Prognosis
- Solitary Fibrous Tumors
(pathology, surgery)
- Tomography, X-Ray Computed
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