Bone involvement in a case of Kaposi sarcoma

Background: Extracutaneous involvement is rare in the classical form of Kap osi sarcoma (KS). Observation: We report a case of bone involvement reveale d by bone pain. Magnetic resonance (MR) images demonstrated the local invas ion of bone from cutaneous lesions. Bone biopsy confirmed bone involvement. The patient was treated with vindesine, Bone pain progressively disappeare d. Conclusion: Bone involvement has rarely been reported in classical KS th ough 4.5% of the patients were affected when it was systematically sought, Treatment of symptomatic lesions requires radiotherapy or chemotherapy.