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Constitutional delay — RACP Paediatrics MCQ

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EasyEndocrineConstitutional delayRACP Paediatrics

A 14-year-old boy is concerned about his height (3rd centile). He has no signs of puberty (Tanner stage 1). His father had his growth spurt at age 15. Bone age is 11.5 years. Growth velocity is normal for bone age. What is the most likely diagnosis?

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Correct answer: B — Constitutional delay of growth and puberty

A boy with delayed puberty whose father also had late puberty, with normal growth velocity for bone age and a significantly delayed bone age, has constitutional delay of growth and puberty (CDGP). This is the most common cause of delayed puberty in boys. They will eventually enter puberty spontaneously and achieve a normal adult height.

Reference: RCH Melbourne – 2023 – Short Stature CPG; RACP Paediatric Curriculum – Endocrine