Some of the causes of an Erlenmeyer flask deformity can be recalled with the following mnemonics:
LORA CHONG
AP OF DR GHLN
CHONG
Lead GNOME
APC(de)FGH
Mnemonics
LORA CHONG
L: leukemia, lead poisoning
H: hypophosphatasia, hemoglobinopathies (thalassemia, sickle cell disease)
O: other dysplasias; Pyle disease (metaphyseal dysplasia) and fibrous dysplasia
AP OF DR GHLN
P: Pyle disease (metaphseal dysplasia) and craniometaphyseal dysplasia
H: hypophosphatasia, hemoglobinopathies (thalassemia, sickle cell disease)
L: leukemia, lead poisoning
CHONG
Lead GNOME
Lead: lead poisoning
M: metaphyseal dysplasia (Pyle disease) and craniometaphyseal dysplasia
E: 'ematological, e.g. thalassemia
APC(de)FGH
A: achondroplasia
P: osteoPetrosis
C: craniometaphyseal dysplasia
G: Gaucher disease
H: haemoglobinopathy (thalassemia and sickle cell disease), hereditary multiple exostoses
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