گزارش یک مورد کیست هیداتیک پستان

         Hydatidosis (echinococcosis)  is a  parasitic  infection  in  human . The    most common cause of hydatid cyst is echinococcus granulosus.          Hydatid cysts commonly involve the liver,lungs and rarely other organs    as spleen , pancreas and breast.          The  patient of this case - report  was a 17 years old girl that referred to    hospital  with  a  slowly growing  mass  in her right breast occasionally with    pain  sensation  from  one  month  before referring to clinic. She operated    and  observed  a  cystic  mass  with  doughter  cyst  and  clear  fluid.  Cyst    excised completely .          The pathological study confirmed the diagnosis of a hydatid cyst.