A rare case of giant hemangioma combined with actinomycosis infection

Hemangiomas are primarily associated with neovascularization and the abnormal proliferation of blood vessels. No cases of hemangioma combined with actinomycosis have been reported in the literature. We present a case of a 54-year-old man with a rapidly enlarging left upper limb mass after two traumatic injuries. Pathological examination performed after surgical resection of the mass at our center revealed a hemangioma complicated by actinomycosis. This case indicates that actinomycetes may colonize hemangiomas and contribute to their continuous enlargement, with excellent prognosis after surgery.