title: Pseudo-pseudohypercalcaemia, apparent primary hyperparathyroidism and Waldenström's macroglobulinaemia.
abstract: An apparent primary hyperparathyroidism was reported due to pseudo-pseudohypercalcaemia in a 74-year-old man with Waldenström's macroglobulinaemia. It is important to recognise artificially elevated serum calcium levels so as to avoid erroneous diagnosis, unnecessary investigations and potentially inappropriate treatment.
authors.affiliation: Department of Clinical Biochemistry, Whipps Cross University Hospital, Leytonstone, London, UK. abubaker.elfatih@whippsx.nhs.uk
authors.forename: A
authors.initials: A
authors.lastname: Elfatih
authors.forename: N R
authors.initials: NR
authors.lastname: Anderson
authors.forename: M N
authors.initials: MN
authors.lastname: Fahie-Wilson
authors.forename: R
authors.initials: R
authors.lastname: Gama
mesh_terms: D000368:Aged; D003951:Diagnostic Errors; D005189:False Positive Reactions; D006801:Humans; D006934:Hypercalcemia / Q000175:diagnosis* / Q000209:etiology; D049950:Hyperparathyroidism, Primary / Q000175:diagnosis* / Q000209:etiology; D008297:Male; D008258:Waldenstrom Macroglobulinemia / Q000150:complications*