Recurrent malignant melanoma presenting as monoarthritis.
A 29-year-old woman had surgery for a level IV malignant melanoma of the right calf. After a disease-free interval of almost 4 years, she presented with right knee arthritis that proved to be due to recurrent melanoma in the femoral condyle. Metastatic carcinomatous arthropathy should be considered in the differential diagnosis of monoarthritis.
D000328:Adult; D001168:Arthritis / Q000175:diagnosis*; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000556:secondary; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006811:Humerus; D008545:Melanoma / Q000175:diagnosis* / Q000556:secondary; D012272:Ribs