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Short stature: making a crystal clear diagnosis
James Blackburn1, Renuka Ramakrishnan2
1Department of Paediatric Endocrinology, Alder Hey Children's Hospital, Liverpool, UK.
Insights
Diagnosing rickets in children can be complex. This case highlights a challenging diagnostic journey for a child with short stature and rickets, emphasizing careful review of laboratory results.
Area of Science:
- Pediatric Endocrinology
- Clinical Diagnostics
- Metabolic Bone Disease
Background:
- Short stature is a frequent pediatric concern.
- Rickets can impede growth, and its diagnosis can be intricate.
- Identifying the specific cause of rickets requires thorough investigation.
Observation:
- A child presented with delayed walking, bowed legs, waddling gait, and faltering growth.
- Initial bone profile and renal function tests appeared normal.
- A critical review revealed adult reference ranges were used for pediatric inorganic phosphate levels.
Findings:
- The diagnostic process for the child's rickets was complex and atypical.
- The patient lacked typical symptoms such as polyuria or polydipsia.
- Normal urine osmolality was observed, complicating the diagnostic picture.
Implications:
- This case underscores the importance of meticulous laboratory data review in pediatric cases.
- It highlights diagnostic challenges in rare disorders presenting atypically.
- Accurate interpretation of reference ranges is crucial for timely diagnosis and management of pediatric rickets.
Abstract:
Background Short stature is a common presentation in paediatric practice. Rickets can lead to poor growth and finding the underlying cause of rickets can, at times, be challenging. Case presentation The child was initially referred due to parental concerns of delayed walking, bowed legs, waddling gait and faltering growth. She was noted to have features of rickets. Bone profile and renal functions were reported to be within the normal range, however, on later review it was noted that adult values for inorganic phosphate had been given for reference ranges. Following a series of investigations, the underlying diagnosis for all her problems was made. Discussion This case demonstrates the complex diagnostic journey of a child whose presentation was not typical of the rare disorder. Unusually, the patient had no symptoms of polyuria or polydipsia and urine osmolality was normal.
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