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Solitary Fibrous Tumors(SFT)

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  • Solitary Fibrous Tumors(SFT)

    Disease Definition: Solitary fibrous tumor (SFT), also known as fibrous tumor of the pleura, is a rare mesenchymal tumor originating in the pleura or at virtually any site in the soft tissue including seminal vesicle. Approximately 78% to 88% of SFT's are benign and 12% to 22% are malignant. It is a heterogeneous group of rare spindle-cell tumors that include benign and malignant neoplasms. Their cell of origin is still debated. SFT is preferred by most pathologists as a better term than “hemangiopericytoma” that gathers numerous unrelated entities and is presently only employed by neuropathologists. We focus the present paper on the forms of this family of tumors occurring in adult patients. There are 3 typical primary locations: pleural, meningeal and extrathoracic soft tissue.

  • Solitary Fibrous Tumors(SFT)

    Disease Symptoms: Patients present with proptosis and possibly ptosis, eyelid swelling, tearing, diplopia or decreased vision. Malignant infiltrating lesions can sometimes cause pain. Disease Treatment: Because even benign-appearing solitary fibrous tumors (SFTs) can be locally recurrent and metastatic, wide resection of both benign and malignant SFTs is recommended. Preoperative vascular studies and arterial embolization should be considered because of the known bleeding risk with resection. Careful exclusion of other diagnoses (eg, synovial sarcoma) is important. Because of the favorable outcome with SFTs, it may be possible to avoid limb-threatening and deforming operations. No evidence suggests that adjuvant chemotherapy is beneficial. If the SFTR appears malignant histologically, adjuvant radiation therapy may be considered. Long-term follow-up is recommended because local and distant relapse is possible, even with benign-appearing tumors.

  • Solitary Fibrous Tumors(SFT)

    Statistics: We report herein a case of a giant SFTP in a 53-year-old man who presented with cough since five years along with chest pain on the left side and progressive dyspnea since two months. Radiological findings revealed a large pleural mass measuring 25 cm in its largest dimension, filling the pleural cavity with effusion. Biopsy showed a spindle cell tumor with areas of dense sclerosis. Subsequent excision unraveled a large multinodular, grey-white tumor, histologically, composed of spindle cells in a 'patternless' arrangement in dense collagenous stroma with areas of hyalinization. Focal areas showed hypercellularity with atypia and mitoses, but less than 4/10 High-Power Field, unassociated with necrosis. On immunohistochemistry, tumor cells showed diffuse positivity with vimentin, CD34 and BCL2 along with cytoplasmic positivity for MIC2 (CD99), whereas cytokeratin, EMA, calretinin and HBME-1 were negative.

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