<prompt> Not true regarding Hydatid cyst of lungNever rupturesCalcification is commonMore common in lower lobesAlways associated with cyst in liver  <response>: Lung in the IInd MC site for hydrated cyst Liver is the 1st Only 10 of pulmonary cyst are associated with hepatic cyst. About 20 of pulmonary cysts are bilateral. Usually seen in the lower lobes of lung. Calcification in rare Note that the calcification is very common in hydatid cyst of liver. It may rupture into the bronchial tree or the peritoneal cavity. ref : harrison 16e p1275 