Zoledronate-responsive calcitriol-mediated hypercalcemia in a 5-year-old case with squamous cell carcinoma on the background of xeroderma pigmentosum

Autor: Gül Yeşiltepe Mutlu, Hülya Kayserili, Banu Oflaz Sözmen, Esra Börklü Yücel, Ulkem Colak, Şükrü Hatun
Přispěvatelé: Mutlu, Gül Yeşiltepe (ORCID 0000-0003-3919-7763 & YÖK ID 153511), Hatun, Şükrü (ORCID 0000-0003-1633-9570 & YÖK ID 153504), Çolak, Ülkem, Sözmen, Banu Oflaz, Yücel, Esra B., Karabey, Hülya Kayserili (ORCID 0000-0003-0376-499X & YÖK ID 7945), Koç University Hospital, School of Medicine, Department of Medical Genetics, Department of Pediatrics, Department of Pediatrics Endocrinology, Department of Pediatrics Hematology Oncology
Rok vydání: 2019
Předmět:
Zdroj: Journal of Pediatric Endocrinology and Metabolism
ISSN: 2191-0251
0334-018X
DOI: 10.1515/jpem-2019-0158
Popis: Malignancy-induced hypercalcemia is a very rare condition in children whereas it is more common among adult patients with malignancy. The mechanisms of malignancy-induced hypercalcemia include the over-secretion of parathyroid hormone-related protein (PTHrP), osteolytic metastases and the over-production of 1,25-dihydroxyvitamin D (calcitriol). Although hypercalcemia due to PTHrP secretion has been published before, overproduction of calcitriol has not been reported yet in pediatric squamous cell skin carcinoma cases. Herein, we report calcitriol-mediated severe hypercalcemia in a 5-year-old boy with squamous cell skin carcinoma arising in the background of xeroderma pigmentosum (XP) which responded well to zoledronate treatment. To the best of our knowledge, this is the first pediatric case of malignancy-induced hypercalcemia which is mediated by calcitriol in squamous cell skin carcinoma.
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Databáze: OpenAIRE