<prompt> Solitary hypoechoic lesion of the liver without septate or debris is most likely to be-Hydatid cystCarolis diseaseLiver abscessSimple cyst  <response>: A solitary hypoechoic lesion without any septae or debris is most likely to be a simple cyst. Option b requires specific mention here:-Solitary hypoechoic anechoic lesion without septae or debris can occur in the early stage of evolution of hydatid cyst Type 1 Simple cyst. However, the diagnosis of hydatid cyst may be considered when focal thickening of the wall is present or when fine hyperechoic spots, due to the hydatid sand, appear in the dependent areas. Solitary hypoechoic aseptate lesion Simple liver cyst Solitary hypoechoic aseptate lesion with Type 1 simple hydatid cyst hyperechoic spots due to hydatid sand 