#edema__oedema__hydrops__hydrop__dropsy  swelling from excessive accumulation of serous fluid in tissue
  supertype:  puffiness__puffines__lump  abnormal protuberance or localized enlargement
  subtype:  lymphedema  swelling (usually in the legs) caused by lymph accumulating in the tissues
  subtype:  scleredema  a skin disease marked by hard edema of the tissue usually beginning in the face
  subtype:  anasarca  generalized edema with accumulation of serum in subcutaneous connective tissue
  subtype:  chemosis  edema of the mucous membrane of the eyeball and eyelid lining
  subtype:  papilledema  swelling of the optic disc (where the optic nerve enters the eyeball); usually associated with an increase in intraocular pressure

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