[Hydrarthrosis of the knee and its etiological problems].
D000208:Acute Disease; D001064:Appendicitis / Q000175:diagnosis*; D004194:Disease; D006801:Humans; D006833:Hydrarthrosis / Q000209:etiology*; D007717:Knee; D007719:Knee Joint
APPENDICITIS/diagnosis; HYDRARTHROSIS/etiology; KNEE/diseases