title: Prolonged hypercalcemia following resection of dysgerminoma: a case report.
abstract: Background. Hypercalcemia is a rare but potentially dangerous complication of pediatric cancer. Of the dysgerminoma cases reported to date, associated hypercalcemia is corrected within 2-7 days of tumor resection. Case. A 13-year-old female with an ovarian dysgerminoma was found to be hypercalcemic on presentation. Following dysgerminoma resection, moderate hypercaclemia persisted for 7 days and calcium remained mildly elevated for an additional 7 days. PTHrP was undetectable. Immunolocalization studies indicated that 1alpha-hydroxylase was expressed in dysgerminoma tissue but 1,25(OH)(2)D(3) was not elevated. Conclusion. Persistently elevated calcium levels following tumor resection suggests that this case involves a previously undescribed mechanism. Elucidation of this mechanism may offer new insights into tumor biology and opportunities for therapeutic correction of hypercalcemia in this patient population.
authors.affiliation: Department of Pediatric Endocrinology, Rainbow Babies & Children's Hospital, 11100 Euclid Avenue, Cleveland, OH 44106, USA.
authors.forename: Abigail
authors.initials: A
authors.lastname: Wald
authors.forename: Sumana
authors.initials: S
authors.lastname: Narasimhan
authors.forename: Lucybeth
authors.initials: L
authors.lastname: Nieves-Arriba
authors.forename: Steven
authors.initials: S
authors.lastname: Waggoner