pseudopolydystrophy

mu·co·lip·i·do·sis III

[MIM*252600, MIM*252605]
mucolipidosis with mild Hurlerlike symptoms, restricted joint mobility, short stature, mild mental retardation, and dysplastic skeletal changes, especially of the hip; aortic and mitral valve disease is often present; associated with a deficiency of N-acetyl-α-glucosaminidase or other enzyme deficiencies such as lysosomal enzyme N-acetylglucosaminyl-1-phosphotransferase in mutant fibroblasts; lacks the ability to recognize lysosomal enzymes and specific substrates for phosphorylation; autosomal recessive inheritance.

pseudopolydystrophy

(1) Mucolipidosis III alpha/beta, see there.  
(2) Mucolipidosis III gamma, see there.