<prompt> Erlen Meyer Flask Deformity is seen in?OsteopetrosisThalassemiaCraniometaphyseal dysplasiasAll  <response>: Mnemonics for Erlen Meyer Flask Deformity CHONG C: craniometaphyseal dysplasiasPyles disease H: haemoglobinopathies thalassemia sickle cell disease O: osteopetrosis N: Niemann-Pick disease G: Gaucher disease Radiographs showed a nondisplaced fracture and undeubulation of the distal femoral diaphysis -- a condition known as Erlenmeyer-flask deformity. 