BACKGROUND: We explore the pattern of late recurrence (LR) in solitary fibrous tumor (SFT), focusing on histopathologic characteristics, clinical presentation and patients (pts) outcome. METHODS: Clinical records of all pts with confirmed pathologic diagnosis of SFT treated at our Institution from 2005 to 2011 were reviewed. We analysed the data of pts who relapsed ≥10 years after initial diagnosis. RESULTS: A total of 14 pts were identified. The primary site of origin was pleura (5 pts), pelvis (4 pts), head and neck (3 pts) and retroperitoneum (2 pts). Primary tumor was a typical SFT in 5 and a malignant SFT in 7 out of 12 pts whose tumor tissue was available for revision. The median time to first recurrence was 12 years (range 10-23). The first relapse was local in 11 cases, distant in 3. Five pts later developed distant metastases. Four out of 5 cases of typical SFT developed distant metastases in spite of their initial benign aspect. No patient was disease-free at the time of the analyses. CONCLUSION: Our series suggests that LR can occur in SFT and some cases can behave aggressively even in the absence of any primary morphologic evidence of malignancy. A prolonged follow-up may be advisable.

Solitary fibrous tumor of all sites: outcome of late recurrences in 14 patients / G.G. Baldi, S. Stacchiotti, V. Mauro, A.P. Dei Tos, A. Gronchi, U. Pastorino, L. Duranti, S. Provenzano, A. Marrari, M. Libertini, S. Pilotti, P.G. Casali. - In: CLINICAL SARCOMA RESEARCH. - ISSN 2045-3329. - 3:1(2013), pp. 4.1-4.7. [10.1186/2045-3329-3-4]

Solitary fibrous tumor of all sites: outcome of late recurrences in 14 patients

S. Stacchiotti;L. Duranti;S. Provenzano;A. Marrari;P.G. Casali
2013

Abstract

BACKGROUND: We explore the pattern of late recurrence (LR) in solitary fibrous tumor (SFT), focusing on histopathologic characteristics, clinical presentation and patients (pts) outcome. METHODS: Clinical records of all pts with confirmed pathologic diagnosis of SFT treated at our Institution from 2005 to 2011 were reviewed. We analysed the data of pts who relapsed ≥10 years after initial diagnosis. RESULTS: A total of 14 pts were identified. The primary site of origin was pleura (5 pts), pelvis (4 pts), head and neck (3 pts) and retroperitoneum (2 pts). Primary tumor was a typical SFT in 5 and a malignant SFT in 7 out of 12 pts whose tumor tissue was available for revision. The median time to first recurrence was 12 years (range 10-23). The first relapse was local in 11 cases, distant in 3. Five pts later developed distant metastases. Four out of 5 cases of typical SFT developed distant metastases in spite of their initial benign aspect. No patient was disease-free at the time of the analyses. CONCLUSION: Our series suggests that LR can occur in SFT and some cases can behave aggressively even in the absence of any primary morphologic evidence of malignancy. A prolonged follow-up may be advisable.
Hemangiopericytoma; Late recurrence; Outcome; Sarcoma; Solitary fibrous tumor
Settore MED/06 - Oncologia Medica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/643390
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