RESUMEN
Aims: To report SFT in a 45 years male who had a lobulated tumor in neck for longest duration of 18 years with borderline histomorphology. Presentation of Case: The case discussed is of a forty-five year old Indian man who presented with painless mass in right side of neck for the duration of 18 years with rapid enlargement in last one year. Discussion: Solitary fibrous tumor is an unusual spindle cell neoplasm arising from primitive mesenchymal cell with distinct “patternlesss pattern” on histomorphology. The commonest site for this tumor is pleura but in recent years it has been described in various anatomic sites and is known to involve any region of the body. The extra- pleural sites include extremities, pelvis, head and neck and urogenital region. SFT of Head and Neck region is rare and usually involves deep soft tissues. Morphologically SFT resembles many benign and malignant soft tissue tumors. Conclusion: SFT is a rare tumor in neck region and has to be differentiated meticulously from other common and rare soft tissue tumors. Close follow up is essential after complete surgical excision in cases with “borderline” histomorphology.