Characteristics of children with florid vitamin D deficient rickets in the Auckland region in 1998.

AIM: To describe the characteristics of children with vitamin D deficiency rickets and identify common features and predisposing factors. METHODS: A review of the clinical notes of all children less than five years of age with radiological evidence of rickets and serum 25-hydroxyvitamin D levels of less than 10 micrograms/L. Patients were identified by searching all low vitamin D levels performed at the Endocrinology laboratory at Auckland Hospital and children presenting to the Starship Childrens' Hospital with rickets in 1998. RESULTS: In 1998, there were eighteen children (ten males and eight females) with vitamin D deficient rickets. The age range was 3 to 36 months with a median of 12 months. There were twelve children of Indian ethnic origin, one Maori, one Tongan, one Western Samoan, one Ethiopian, one Moroccan and one Indonesian. All children had an elevated alkaline phosphatase level and most had very low serum 25-hydroxyvitamin D levels (< or = 5 micrograms/L), and over half were hypocalcaemic. The common presenting features were delayed walking and bowed legs, swollen wrists or ankles, hypocalcaemic seizure, incidental radiological abnormalities and failure to thrive. CONCLUSIONS: There are a significant number of children in Auckland presenting with florid clinical rickets. The majority with vitamin D deficient rickets in this survey were of Indian ethnic origin. Strategies are needed to detect children at risk of vitamin D deficiency and supplement them with vitamin D.

Phaeochromocytomas discovered during coronial autopsies in Sydney, Melbourne and Auckland.

BACKGROUND: The diagnosis of phaeochromocytoma can be difficult and previous autopsy studies have found that many of these tumours are not recognised during life. AIM: To determine the incidence of phaeochromocytoma during coronial autopsies and the characteristics of the individuals concerned. METHOD: Review of coronial autopsy records from Auckland (1981-97), Melbourne (1991-97) and Sydney (1991-97). RESULTS: Twenty-two patients were found giving an incidence of 0.05% (one tumour per 2031 autopsies) with similar figures in each centre. Thirteen of the patients were men, 12 were overweight (body mass index >25 kg/m2) and three of the seven Auckland patients were Maori. Fourteen of the tumours were left-sided, one was extra-adrenal and none had metastasised. The one patient with bilateral tumours had multiple endocrine neoplasia syndrome type 2 (MEN-2) which had not been recognised during life. The heart weight was increased in 95% of the patients. The tumour may have contributed to the patient's death in up to 50% of the cases, although the true significance of these lesions as a cause of death remains unclear. Three patients died soon after general anaesthetics had been given for unrelated reasons. CONCLUSIONS: Even though phaeochromocytomas are uncommon, we fail to diagnose a significant number of these tumours during life. Methods are needed to increase the detection of phaeochromocytoma and to distinguish functional and non-functional tumours.