Femoral fracture due to osteosarcoma masquerading as internal derangement of the knee.
D000328:Adult; D003937:Diagnosis, Differential; D005264:Femoral Fractures / Q000209:etiology*; D005266:Femoral Neoplasms / Q000150:complications* / Q000175:diagnosis; D005598:Fractures, Spontaneous / Q000209:etiology*; D006801:Humans; D007718:Knee Injuries / Q000175:diagnosis*; D008297:Male; D012516:Osteosarcoma / Q000150:complications* / Q000175:diagnosis