Plumber's knee: calcinosis cutis after repeated minor trauma in a plumber.
D002114:Calcinosis / Q000209:etiology*; D006801:Humans; D007718:Knee Injuries / Q000150:complications*; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D012498:Sanitary Engineering; D012867:Skin / Q000293:injuries; D012871:Skin Diseases / Q000209:etiology*