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Downie ML, Mulder J, Schneider R, Lim L, Tehrani N, Wasserman JD, Fuchs S, John R, Noone DG, Hebert D. A curious case of growth failure and hypercalcemia: Answers. Pediatr Nephrol 2018; 33:995-999. [PMID: 28785985 DOI: 10.1007/s00467-017-3769-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 07/12/2017] [Indexed: 12/01/2022]
Abstract
BACKGROUND Sarcoidosis is a multisystem granulomatous disease of unknown etiology that rarely presents in childhood. Here, we report a case of pediatric sarcoidosis, presenting with renal failure and hypercalcemia. CASE DIAGNOSIS/TREATMENT A previously well 14-year-old Caucasian boy was admitted to the Hospital for Sick Children, Canada, for hypertension and renal failure following work-up by his family physician for initial concerns of growth failure. On admission, his weight was 35 kg (<3rd percentile), his height was 148 cm (<<3rd percentile), and his blood pressure was 154/116 mmHg (>99th percentile for height). Laboratory findings showed elevated creatinine (218 umol/L), hypercalcemia (3.21 mmol/L), and normocytic anemia (hemoglobin 105 g/L). His further assessment showed a urinary concentrating defect with hypercalciuria (calcium/creatinine 1.76 mmol/mmol) and nephrocalcinosis on ultrasound. His eye examination showed uveitis with conjunctival biopsy remarkable for granulomas, which led to pursuit of a diagnosis of possible sarcoidosis. Angiotensin Angiotensin-converting enzyme was found to be high at 96 U/L, and he had a renal biopsy that was consistent with interstitial nephritis with granulomas. Treatment was started with prednisone leading to resolution of his hypercalcemia but persistence of his mild chronic kidney disease. CONCLUSIONS This case represents an atypical presentation of a rare pediatric disease and highlights the spectrum of renal manifestations and treatment options in sarcoidosis.
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Affiliation(s)
- Mallory L Downie
- Division of Nephrology, University of Toronto, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Jaap Mulder
- Division of Nephrology, University of Toronto, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Rayfel Schneider
- Division of Rheumatology, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Lillian Lim
- Division of Rheumatology, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Nasrin Tehrani
- Division of Ophthalmology, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Jonathan D Wasserman
- Division of Endocrinology, Department of Paediatrics, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Shai Fuchs
- Division of Endocrinology, Department of Paediatrics, University of Toronto, The Hospital for Sick Children, Toronto, ON, Canada
| | - Rohan John
- Department of Pathology, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Damien G Noone
- Division of Nephrology, University of Toronto, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Diane Hebert
- Division of Nephrology, University of Toronto, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada.
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