title: [A man with a painful and swollen ankle].
abstract: A 58-year-old male patient was referred to the dermatologist because of swelling and pain of his left ankle. Radiodiagnostic imaging revealed an osteodestructive tumor which after biopsy proved to be a chondrosarcoma. Malignancy should be in the differential diagnosis of chronic one-sided edema.
authors.affiliation: Erasmus MC, afd. Dermatologie.
authors.forename: Enes
authors.initials: E
authors.lastname: Hajdarbegovic
authors.forename: Tamar
authors.initials: T
authors.lastname: Nijsten
mesh_terms: D000842:Ankle / Q000473:pathology*; D001859:Bone Neoplasms / Q000150:complications / Q000175:diagnosis*; D002813:Chondrosarcoma / Q000150:complications / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004487:Edema / Q000175:diagnosis / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000175:diagnosis / Q000209:etiology