CEN Case Reports

, Volume 6, Issue 2, pp 164–168 | Cite as

Nephrocalcinosis in a young male with anorexia nervosa

  • Nicholas ChadiEmail author
  • Simon Carter
  • Robert P. Y. Loung
  • Michelle Gould
  • Katherine Hick
Case report


Nephrocalcinosis (NC) has been described as a long-term complication of anorexia nervosa (AN). This is the first report of this complication in an adolescent male patient. We describe the case of a 12-year-old male with AN who presented with acute food restriction and excessive exercising leading to three inpatient admissions. The patient experienced an isolated episode of dysuria and hematuria while on calcium and vitamin D supplementation. Investigations revealed hypophosphatemia, hypercalciuria and mild NC. Follow-up confirmed the presence of NC and possible nephrolithiasis (NL). We discuss the pathophysiology and risk factors of NC and NL in the context of an early presentation of AN. We suggest fluid intake should be liberalized under observation and calcium and vitamin D supplementation should be initiated with caution in patients presenting with AN and risk factors for NC and NL.


Nephrocalcinosis Anorexia nervosa Eating disorders Male Adolescent 



Anorexia nervosa







The authors would like to acknowledge Dr. Seetha Radhakrishnan for her suggestions in writing the manuscript.

Compliance with ethical standards

Conflict of interest

The authors have declared that no conflict of interest exists.

Human and animal rights

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study.


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Copyright information

© Japanese Society of Nephrology 2017

Authors and Affiliations

  1. 1.Division of Adolescent Medicine, Department of PediatricsHospital for Sick ChildrenTorontoCanada
  2. 2.Division of Nephrology, Department of PediatricsHospital for Sick ChildrenTorontoCanada
  3. 3.Department of PediatricsHospital for Sick ChildrenTorontoCanada

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