Growth and Development Practice Questions

Q: A mother is concerned about the bowing of legs of her child. Which tests should be performed to label it as physiological genu varum?

X-ray wrist, cover-up test, urine calcium and SAP. ***X-ray wrist, cover-up test, urine calcium and SAP*** - An **X-ray of the wrist** is used to assess bone age and look for metaphyseal changes suggestive of rickets, which would rule out physiological genu varum. - The **cover-up test** (specifically to evaluate for Blount disease) helps differentiate physiological bowing from pathological bowing, while **urine calcium and serum alkaline phosphatase (SAP)** are used to rule out nutritional rickets or other metabolic bone disorders. *X-ray wrist, urine hydroxyproline, urine calcium and SAP* - While X-ray wrist, urine calcium, and SAP are relevant, **urine hydroxyproline** is primarily used as a marker for bone turnover and collagen degradation and is not a primary diagnostic test for distinguishing physiological genu varum. - The inclusion of **urine hydroxyproline** makes this option less precise for the direct diagnosis of physiological genu varum compared to other tests. *X-ray wrist, urine aminoaciduria* - An **X-ray of the wrist** is appropriate, but **urine aminoaciduria** is a marker for certain metabolic disorders affecting renal reabsorption or amino acid metabolism, not directly for ruling out common causes of pathological bowing or confirming physiological genu varum. - This option lacks tests that specifically screen for metabolic bone diseases like rickets, which are crucial differentiators. *X-ray wrist, urinary calcium* - While both parameters are relevant, this option is **incomplete** as it misses important diagnostic tools. - **Serum alkaline phosphatase (SAP)** is crucial for evaluating bone turnover and rickets, and a specific clinical test like the **cover-up test** or examination for other signs of Blount disease is necessary for differentiating physiological bowing.

Q: Which structure is most commonly affected in rickets?

C. ***C (Physis/Growth Plate)*** - **Rickets** is a metabolic disorder characterized by inadequate mineralization of growing bones, most commonly affecting the **physis (growth plate)** of long bones - The growth plate is the cartilaginous area between the epiphysis and metaphysis where active bone growth occurs - Defective mineralization at this site leads to widening of the growth plate and characteristic skeletal deformities - **Reference:** O. P Ghai Textbook of Pediatrics, 8th Ed, page 113 *A (Epiphysis)* - The epiphysis is the bony section at the end of a long bone - While mineralization can be affected, it is not the **primary site** of pathology in rickets - The epiphysis and physis are anatomically distinct structures *B (Diaphysis)* - The diaphysis is the shaft of long bones - Though cortical bone can show changes in rickets, the diaphysis is not the **most commonly affected** area - The actively growing physis shows more pronounced changes *D (Metaphysis)* - The metaphysis is adjacent to the growth plate and can show radiological changes (cupping, fraying) - However, the **primary pathology** originates at the physis itself - Metaphyseal changes are secondary to physeal involvement

Q: The picture depicts Rocker bottom feet. This finding is classically associated with which chromosomal abnormality?

Edward syndrome. ***Edward syndrome*** - **Rocker-bottom feet** are a classic skeletal anomaly observed in infants with **Edward syndrome (trisomy 18)**. - Other distinctive features of Edward syndrome include **micrognathia**, prominent occiput, and **overlapping fingers**. *Down syndrome* - Characterized by a **single palmar crease**, **upslanting palpebral fissures**, and a flattened facial profile. - **Rocker-bottom feet** are not typically associated with Down syndrome. *Patau syndrome* - Associated with severe malformations including **microophthalmia**, **cleft lip/palate**, **polydactyly**, and central nervous system anomalies. - While foot anomalies can occur, **rocker-bottom feet** are less characteristic compared to Edward syndrome. *Turner syndrome* - This is a **monosomy X (45, XO)** condition primarily affecting females. - Key features include **short stature**, **webbed neck**, and **ovarian dysgenesis**, not rocker-bottom feet.

Q: Ear lobe creases in a child are commonly associated with which disorder that also presents with macroglossia and macrosomia?

Beckwith-Wiedemann syndrome. ***Beckwith-Wiedemann syndrome*** - **Beckwith-Wiedemann syndrome** is characterized by conditions such as **macrosomia** (large body size), **macroglossia** (enlarged tongue), **visceromegaly**, and **ear lobe creases** or pits. - It is an overgrowth disorder often associated with an increased risk of certain childhood cancers like **Wilms tumor** and hepatoblastoma. *Down syndrome* - **Down syndrome** (Trisomy 21) presents with distinct facial features like a **flat nasal bridge**, **epicanthal folds**, and a single palmar crease, but **ear lobe creases** are not a primary characteristic. - While **macroglossia** can be seen, **macrosomia** is generally not a feature; instead, individuals with Down syndrome often have growth delays. *Turner syndrome* - **Turner syndrome** (XO karyotype) is characterized by features such as **short stature**, a **webbed neck**, shield chest, and **low-set ears**, but not typically ear lobe creases or macroglossia. - Affected individuals are phenotypically female and experience **gonadal dysgenesis**. *Noonan syndrome* - **Noonan syndrome** shares some features with Turner syndrome, including **short stature**, **webbed neck**, and **pectus excavatum**, but also presents with distinct cardiac defects. - While it can involve various facial dysmorphia, **ear lobe creases**, **macroglossia**, and **macrosomia** are not typically defining characteristics.

Q: A child presents with polydactyly and obesity. Which syndrome is most likely associated with these clinical findings?

Laurence-Moon-Bardet-Biedl syndrome. ***Laurence-Moon-Bardet-Biedl syndrome*** - This syndrome often presents with **polydactyly**, **obesity**, **retinal degeneration**, learning disabilities, and renal abnormalities. - The combination of polydactyly and obesity in a child points strongly toward this diagnosis. *Apert syndrome* - Characterized by **craniosynostosis** (premature fusion of skull bones) and **syndactyly** (fusion of fingers or toes), not typically polydactyly. - Obesity is not a primary feature of Apert syndrome. *Trisomy 21* - Also known as **Down syndrome**, it typically presents with characteristic facial features, intellectual disability, and often congenital heart defects. - While some hand anomalies can occur, **polydactyly** and **obesity** are not typical primary diagnostic features. *Fetal hydantoin syndrome* - Caused by exposure to **phenytoin** during pregnancy, leading to features like broad nasal bridge, cleft lip/palate, developmental delay, and hypoplastic fingernails. - **Polydactyly** and **obesity** are not characteristic features of this syndrome.

Q: The image shows presence of:

Single palmar crease. ***Single palmar crease*** - The image clearly shows a **single transverse palmar crease** (simian crease), which is a **dermatoglyphic feature** where the normal two palmar creases are replaced by one continuous crease across the palm. - This finding is present in approximately **50% of individuals with Down syndrome** and is considered a significant clinical marker, though it can also occur in about 5% of the general population. *Macroglossia* - **Macroglossia** (enlarged tongue) is a common feature of **Down syndrome** but involves the oral cavity and tongue size. - The image shows only the **palm of the hand**, making it impossible to assess for macroglossia, which would require visualization of the oral structures. *Brushfield spots* - **Brushfield spots** are white or light-colored spots around the **periphery of the iris** and are characteristic of Down syndrome. - These spots are **ocular findings** that would require examination of the eyes, which are not visible in this palm-focused image. *Umbilical hernia* - **Umbilical hernia** is a protrusion of abdominal contents through the **umbilical ring** and is more common in children with Down syndrome. - This is an **abdominal finding** that would require visualization of the umbilical area, which is not shown in this image of the palm.

Q: A child can perform this activity by what age?

5–6 months. Here's an explanation based on the image, which depicts a child turning their head to the sound of a rattle, a developmental milestone. ***5–6 months*** - Turning the head towards a sound, especially a rattle held to the side, is a typical **auditory localization** skill developed around 5-6 months of age. - At this age, infants also begin to sit with support and reach for objects, indicating developing **motor and cognitive abilities**. - This represents the infant's ability to integrate auditory input with motor response. *2–3 months* - At this age, infants show **primitive auditory responses** such as startling to loud sounds or briefly stopping activity when hearing a voice. - They cannot yet **localize sound** by turning their head toward the source consistently. *9–10 months* - By this age, infants have already mastered auditory localization and can perform more complex tasks like responding to their name and understanding simple commands. - They demonstrate **advanced social and language skills** beyond simple sound localization. *12–15 months* - At this age, children are typically **walking independently** and using several meaningful words. - Sound localization is a skill already well-established by this developmental stage.

Q: The child can do this activity at which age?

5 years. ***5 years*** - **Skipping** is a complex gross motor skill that requires coordinated bilateral movements, balance, and rhythmic alternation between feet - This skill is typically achieved at **5 years of age** according to standard developmental milestones - At 5 years, children can **skip alternating feet smoothly and fluidly**, incorporating it into play activities - This represents the age at which **most children master true skipping** with proper coordination *3 years* - Children at **3 years** are developing skills like running, jumping with both feet together, and climbing stairs alternating feet - **Skipping is too complex** for 3-year-olds as it requires bilateral coordination they have not yet developed - They may attempt hopping or galloping movements, but cannot perform true alternating-foot skipping *4 years* - At **4 years**, children can hop on one foot (4-6 hops) and have improved gross motor coordination - They may **attempt skipping** but typically do so with uneven, uncoordinated movements or a galloping gait - True smooth alternating-foot skipping is generally **not yet mastered** at this age *6 years* - By **6 years**, skipping is well-established and refined, often incorporated into complex games and activities - Children at this age have mastered the skill and can perform it effortlessly - However, **6 years is beyond the typical age of initial skill acquisition** (which occurs at 5 years)

Q: The developmental milestone shown in the image corresponds to which age?

12 weeks. ***12 weeks*** - At 12 weeks (3 months), infants typically develop the ability to **hold their head up steadily** when placed on their tummy and can **bear weight on their forearms**, as shown in the image. - They also start to **reach for and bat at objects**, indicating improved hand-eye coordination. *8 weeks* - At 8 weeks (2 months), infants generally have **limited head control** and are usually able to lift their head briefly, but not steadily for extended periods. - They are typically not yet able to **bear significant weight on their forearms** or actively reach for objects with purpose. *16 weeks* - By 16 weeks (4 months), infants have usually achieved excellent **head control** and can often **roll from tummy to back**. - They are also typically able to **grasp objects** and bring them to their mouth, which is more advanced than what is depicted. *20 weeks* - At 20 weeks (5 months), infants are usually able to **roll both ways** (tummy to back and back to tummy) and can often **sit with support**. - They show more complex actions like **passing objects from one hand to another**, which is beyond the developmental stage shown.

Q: A 5-year-old short stature child is brought for evaluation. Which disease is the most likely diagnosis as depicted by these pictures of the child, foot and retina?

Bardet-Biedl syndrome. ***Bardet-Biedl syndrome*** - This rare autosomal recessive ciliopathy is characterized by a **classic pentad**: central obesity, **polydactyly**, **retinal dystrophy** (rod-cone dystrophy), renal abnormalities, and hypogonadism. - The combination of **short stature with obesity**, **polydactyly** (clearly visible in the foot image), and **pigmentary retinopathy** (visible in the retinal image) is **pathognomonic** for Bardet-Biedl syndrome. - This is the **only syndrome among the options** that presents with all three clinical features shown in the images. *Prader-Willi syndrome* - Characterized by **hypotonia** in infancy, **hyperphagia** leading to obesity, short stature, and distinct facial features (almond-shaped eyes, narrow forehead). - Does **not present with polydactyly** or the specific type of **retinal dystrophy** seen in Bardet-Biedl syndrome. - Caused by loss of paternally expressed genes on chromosome 15q11-13. *Alstrom syndrome* - Rare autosomal recessive disorder sharing features like obesity and **cone-rod dystrophy** (retinal degeneration). - Distinguished by early-onset **dilated cardiomyopathy**, **progressive hearing loss**, and **type 2 diabetes**. - **Polydactyly is not a feature** of Alstrom syndrome, making it unlikely given the foot abnormality in the image. *Carpenter syndrome* - Rare form of **acrocephalopolysyndactyly** characterized by **craniosynostosis** (premature fusion of skull sutures), distinctive craniofacial anomalies, **polysyndactyly**, and obesity. - While it includes polydactyly, it is distinguished by severe **skull and facial deformities** (tower-shaped skull, flat nasal bridge). - Does **not typically involve retinopathy**, making it inconsistent with the retinal findings shown.

Question 1

A mother is concerned about the bowing of legs of her child. Which tests should be performed to label it as physiological genu varum?

Accepted Answer

X-ray wrist, cover-up test, urine calcium and SAP

Answer

X-ray wrist, urine hydroxyproline, urine calcium and SAP

Answer

X-ray wrist, urine aminoaciduria

Answer

X-ray wrist, urinary calcium

Question 2

Which structure is most commonly affected in rickets?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 3

The picture depicts Rocker bottom feet. This finding is classically associated with which chromosomal abnormality?

Accepted Answer

Edward syndrome

Answer

Down syndrome

Answer

Patau syndrome

Answer

Turner syndrome

Question 4

Ear lobe creases in a child are commonly associated with which disorder that also presents with macroglossia and macrosomia?

Accepted Answer

Beckwith-Wiedemann syndrome

Answer

Down syndrome

Answer

Turner syndrome

Answer

Noonan syndrome

Question 5

A child presents with polydactyly and obesity. Which syndrome is most likely associated with these clinical findings?

Accepted Answer

Laurence-Moon-Bardet-Biedl syndrome

Answer

Apert syndrome

Answer

Trisomy 21

Answer

Fetal hydantoin syndrome

Question 6

The image shows presence of:

Accepted Answer

Single palmar crease

Answer

Macroglossia

Answer

Brushfield spots

Answer

Umbilical hernia

Question 7

A child can perform this activity by what age?

Accepted Answer

5–6 months

Answer

2–3 months

Answer

12–15 months

Answer

9–10 months

Question 8

The child can do this activity at which age?

Accepted Answer

5 years

Answer

3 years

Answer

4 years

Answer

6 years

Question 9

The developmental milestone shown in the image corresponds to which age?

Accepted Answer

12 weeks

Answer

8 weeks

Answer

16 weeks

Answer

20 weeks

Question 10

A 5-year-old short stature child is brought for evaluation. Which disease is the most likely diagnosis as depicted by these pictures of the child, foot and retina?

Accepted Answer

Bardet-Biedl syndrome

Answer

Prader-Willi syndrome

Answer

Alstrom syndrome

Answer

Carpenter syndrome

Growth and Development — MCQs

Growth and Development — MCQs

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