Benign fibrous histiocytoma of a rib.

Rib benign fibrous histiocytoma (BFH) is an uncommon entity. We came across a 20-year-old Chinese man who complained of right chest pain for 2 weeks. All laboratory examination results were normal. CT of the thorax revealed an expansible bone lesion in the right sixth anterior rib. Whole-body bone scan demonstrated intense tracer uptake in the lesion without other abnormalities. The patient underwent en bloc resection. Pathological diagnosis confirmed the diagnosis of rib BFH. This report underlines that when whole-body bone scan displays solitary uptake of a rib lesion, rib BFH should be considered in the differential diagnosis.