Introduction Solitary fibrous tumor is a rare type of mesenchymal, spindle-cell tumor reported mostly in the pleura. Retroperitoneal occurrence is rare and histopathological diagnosis is challenging. Case Presentation A 55-year-old woman with nonspecific abdominal pain was found to have a retroperitoneal/pelvic mass adjacent to the upper rectum. The patient underwent surgical resection in cle...

Solitary fibrous tumor is a rare tumor type and has an unpredictable course. Local recurrence rate varies between 9 and 19%, and rate of metastatic involvement between 0 and 36 %. It is characterized by a typical architecture and immuno-histochemistry tests. The most important prognostic factor is the complete resection of primary tumor. Treatment of recurrences is not clearly established. If a...

BACKGROUND Solitary fibrous tumor is a spindle cell neoplasm that most commonly arises in the pleura and very rarely involves the orbit. CASE A 38-year-old woman presented with slowly progressive proptosis of 3 months duration and optic nerve head edema in her right eye. Magnetic resonance imaging revealed a well-circumscribed, round mass lesion, which showed isointensity to the gray matter i...

Solitary fibrous tumors were previously referred to as localized mesotheliomas or pleural fibromas but were later defined as a submesothelial mesenchymal rather than a mesothelial neoplasm. These tumors are rare neoplasms that most frequently occur in the pleura but can be encountered in many other parts of the body. We describe a case of a 54-year-old man with dyspnea on exertion who underwent...

2006;130;581-583 Chest Massimiliano Paci and Alberto Cavazza Giulio Rossi, Laura Schirosi, Filippo Giovanardi, Giuliana Sartori, ß Mutation PDGFR With Sarcomatous Overgrowth Showing Pleural Malignant Solitary Fibrous Tumor http://chestjournal.org/cgi/content/abstract/130/2/581 and services can be found online on the World Wide Web at: The online version of this article, along with updated infor...

The aim of the study is to describe the radiological imaging features of different solitary fibrous tumors (SFTs) locations and present histopathological correlations. From 2007 to 2013, 20 cases of histologically confirmed that SFTs were retrospectively analyzed with computed tomography (CT; 9/20), magnetic resonance imaging (MRI; 5/20), or both CT and MRI (6/20). All 20 SFTs were well defined...

INTRODUCTION A tumor metastasizing to another malignancy is an uncommon phenomenon. Since it was first described in 1902, there have been fewer than 200 cases reported in the literature, with lung cancer metastasizing to renal cell carcinoma being the most frequently described pattern. Here we report a case of a solitary fibrous tumor of the lung acting as the recipient for a renal cell carcino...

The solitary fibrous tumor of the pleura (SFTP) is a rare primary tumor arising from mesenchymal cells in the areolar tissue subjacent to the mesothelial-lined pleura. From an epidemiological standpoint, solitary fibrous tumors of the pleura account for less than 5% of primary pleural tumors, and commonly affect patients in the sixth and seventh decades. We presented the case of a 38-year-old w...

We report a case of solitary fibrous tumor involving the spinal nerve root at the L1-L2 level in a 67-year-old man. The patient presented with lumbar pain and weakness in his right lower extremity. Histologically, the tumor was composed of a proliferation of monomorphous spindle cells in an abundant collagenous stroma; neither necrosis nor mitoses were evident. These cells were strongly immunor...