MR appearance of the extensor digitorum manus brevis muscle: a pseudotumor of the hand.

andlongfingers (Fig.1).Because ofthesignal characteristics ofthemass, apreliminary diagnosis ofgiant celltumor ofthetendonsheath wasproposed. Atsurgery, ananomalous muscle wasfoundandwasnotresected.Case2A43-year-old right-handed woman hadpain intheleftwrist 5months after shefellwithforced dorsiflexion ofthatwrist. Physicalexamination revealed areas ofdorsal tenderness aswell asmild