Fibrous histiocytoma of the tongue: A case report

Background and aim: benign fibrous histiocytoma (bfh) is a rare lesion in the head and neck with a slow, single, and painless growth that consists of fibroblasts and histiocytes. in this study, a bfh case was reported and examined from clinical, microscopic, and immunohistochemical aspects. case report: a 36-year-old man with a red nodule on the dorsal surface of his tongue was referred to the oral medicine department. the appearance of this nodule was similar to the adjacent tissue in its surface. according to the same microscopic view of this lesion with other soft tissue tumors, immunohistochemistry test confirmed the diagnosis. it was treated with en-bloc surgical resection. in four follow-ups up to one year, there was no recurrence. considering the results of these cases and comparing them with other cases, although there is a slim chance of recurrence in one year, follow up is recommended. conclusion: clinical view of fh is not characteristic and tumors with microscopic spindle-shaped appearance are challenging in diagnosis. ihc is obligatory to reach a prompt diagnosis and due to recurrence, follow-up is recommended.