title: The penta X (49,XXXXX) syndrome: danger of confusing phenotype with mongolism.
mesh_terms: D003937:Diagnosis, Differential; D004314:Down Syndrome / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D012729:Sex Chromosome Aberrations / Q000175:diagnosis* / Q000235:genetics; D013577:Syndrome; D014960:X Chromosome