title: Monarthritis of the ankle as manifestation of a calcaneal metastasis of bronchogenic carcinoma.
abstract: We report a case of bronchiogenic carcinoma metastasizing to the calcaneus and clinically manifesting itself as a therapy-refractory monarthritis in the right ankle. There is a wide spectrum of possible diagnoses of acute ankle monarthritis including different forms of inflammatory rheumatic diseases, sarcoidosis, osteoarthritis, or septic arthritis. Primary or metastatic malignancies of the hand or foot bones are considered to be rare. Persistent monarthritis as a sole symptom of a calcaneal metastasis has never been reported. This case demonstrates possible difficulties in the early differential diagnosis of acute monarthritis, and will be discussed with respect to the few reports on foot acrometastases.
authors.affiliation: Clinic of Internal Medicine IV, Departement of Rheumatology & Osteology, Friedrich-Schiller-University of Jena, Germany. joerg.kaufmann@med.uni-jena.de
authors.forename: J
authors.initials: J
authors.lastname: Kaufmann
authors.forename: E
authors.initials: E
authors.lastname: Schulze
authors.forename: G
authors.initials: G
authors.lastname: Hein
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000843:Ankle Joint; D001168:Arthritis / Q000175:diagnosis / Q000209:etiology* / Q000532:radiotherapy; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000150:complications / Q000175:diagnosis / Q000556:secondary*; D002111:Calcaneus; D002283:Carcinoma, Bronchogenic / Q000150:complications / Q000175:diagnosis / Q000556:secondary*; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000473:pathology*